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| 1 | 中国森林资源第七次清查结果及其分析显示文摘在系统分析第七次(2004~2008年)全国森林资源清查总体情况的基础上,总结了此次清查的5个特点;从森林资源结构、资源数量、区域分布、资源发展变化等方面揭示了我国林业发展和生态建设的最新成果;剖析了森林资源发展中存在的问题,并提出了相应的措施。清查结果显示:全国森林面积1.95亿hm^2,森林覆盖率20.36%,森林蓄积137.21亿m^3;人工林保存面积0.62亿hm^2,蓄积19.61亿m^3,人工林面积继续保持世界首位;森林植被总碳储量78.11亿t,年生态服务功能价值10.01万亿元。 | Department of Forest Resources Management,SFA (Department of Forest Resources Management,SFA,Beijing 100714) | 2010 | 林业经济2010，，2： | 44 |
| 2 | Belowground carbon balance and carbon accumulation rate in the successional series of monsoon evergreen broad-leaved forest显示文摘The balance, accumulation rate and temporal dynamics of belowground carbon in the successional series of monsoon evergreen broadleaved forest are obtained in this paper, based on long-term observations to the soil organic matter, input and standing biomass of litter and coarse woody debris, and dissolved organic carbon carried in the hydrological process of subtropical climax forest ecosystem—monsoon evergreen broad-leaved forest, and its two successional forests of natural restoration—coniferous and broad-leaved mixed forest and Pinus massoniana forest, as well as data of root biomass obtained once every five years and respiration measurement of soil, litter and coarse woody debris respiration for 1 year. The major results include: the belowground carbon pools of monsoon evergreen broad-leaved forest, coniferous and broad-leaved mixed forest, and Pinus massoniana forest are 23191 ± 2538 g·m?2, 16889 ± 1936 g·m?2 and 12680 ± 1854 g·m?2, respec- tively, in 2002. Mean annual carbon accumulation rates of the three forest types during the 24a from 1978 to 2002 are 383 ± 97 g·m?2·a?1, 193 ± 85 g·m?2·a?1 and 213 ± 86 g·m?2·a?1, respectively. The belowground carbon pools in the three forest types keep increasing during the observation period, suggesting that belowground carbon pools are carbon sinks to the atmosphere. There are seasonal variations, namely, they are strong carbon sources from April to June, weak carbon sources from July to September; while they are strong carbon sinks from October to November, weak carbon sinks from December to March. | ZHOU Guoyi1, ZHOU Cunyu1, LIU Shuguang2, TANG Xuli1, OUYANG Xuejun1, ZHANG Deqiang1, LIU Shizhong1, LIU Juxiu1, YAN Junhua1, ZHOU Chuanyan1, LUO Yan1, GUAN Lili1 & LIU Yan1 1. Dinghushan Forest Ecosystem Research Station, Chinese Academy of Sciences, Guangzhou 510650, China 2. SAIC, EROS Data Center, U.S. Geological Survey, Sioux Falls, SD 57198, USA | 2006 | Science China Earth Sciences2006，49，3： | 36 |
| 3 | 第六次全国森林资源清查及森林资源状况显示文摘在系统分析第六次(1999年-2003年)森林资源连续清查总体情况的基础上,总结了此次清查的五个特点;从森林资源结构、资源数量、区域分布、资源发展变化等方面揭示了此次资源清查的最新成果;剖析了森林资源发展中存在的问题,并提出了相应措施。清查结果显示:全国林业用地面积2.85亿hm^2,森林面积1.75亿hm^2,森林覆盖率18.21%,森林蓄积量124、56亿m^3;人工林面积0.53亿hm^2,蓄积15.05亿m^3。 | Department of Forest Resources Management,State Forestry Administration | 2005 | 绿色中国(理论版)2005，，01M： | 32 |
| 4 | Map and analysis of microsatellites in the genome of Populus: The first sequenced perennial plant显示文摘Environmental Sciences Division, Oak Ridge National Laboratory, TN, USA We mapped and analyzed the microsatellites throughout 284295605 base pairs of the unambiguously assembled sequence scaffolds along 19 chromosomes of the haploid poplar genome. Totally, we found 150985 SSRs with repeat unit lengths between 2 and 5 bp. The established microsatellite physical map demonstrated tr at SSRs were distributed relatively evenly across the genome of Populus. On average, These SSRs occurred every 1883 bp within the poplar genome and the SSR densities in intergenic regions, introns, exons and UTRs were 85.4%, 10.7%, 2.7% and 1.2%, respectively. We took di-, tri-, tetra-and pentamers as the four classes of repeat units and found that the density of each class of SSRs decreased with the repeat unit lengths except for the tetranucleotide repeats. It was noteworthy that the length diversification of microsatellite sequences was negatively correlated with their repeat unit length and the SSRs with shorter repeat units gained repeats faster than the SSRs with longer repeat units. We also found that the GC content of poplar sequence significantly correlated with densities of SSRs with uneven repeat unit lengths (tri-and penta-), but had no significant correlation with densities of SSRs with even repeat unit lengths (di-and tetra-). In poplar genome, there were evidences that the occurrence of different microsatellites was under selection and the GC content in SSR sequences was found to significantly relate to the functional importance of microsatellites. | LI ShuXian & YIN TongMing College of Environment and Forest Resources, Nanjing Forestry University, Nanjing 210037, China Environmental Sciences Division, Oak Ridge National Laboratory, TN, USA | 2007 | Science China(Life Sciences)2007，50，5： | 25 |
| 5 | Simulation of energy and water balance in Soil-Vegetation-Atmosphere Transfer system in the mountain area of Heihe River Basin at Hexi Corridor of northwest China显示文摘In the mountain area of inland Heihe River Basin at Hexi Corridor of northwest China during the vegetation growing season from May to September, the Simultaneous Heat and Water (SHAW) model of Soil-Vegetation-Atmosphere Transfer (SVAT) system is applied to simulating and studying energy and water balance of the soil-residue-plant canopy layers in the Picea crassifolia forest and the grassland by the forest at the shaded slope and the grassland at the sun-facing slope. The simulation of energy balance indicates that net radiation of the grass- land at the sun-facing slope is more than that of the Picea crassifolia forest and the grassland by the forest at the shaded slope. The energy outgoing components are the first latent heat and next sensible heat from the grassland both at the shaded slope and the sun-facing slope, but those at the former are less. The energy outgoing components are the first sensible heat and next latent heat from the Picea crassifolia forest. The composition and distribution of energy in the soil-residue-plant canopy layers in the Picea crassifolia forest and the grassland by the forest at the shaded slope make the soil layer receive less energy, which therefore, especially the forest possesses the energy conditions for soil water conservation. The simulation of water balance indicates that the water loss of the grassland at the sun-facing slope is mainly caused by soil evaporation, while evapotranspiration of the Picea crassifolia forest and the grassland by the forest at the shaded slope is less than that of the grassland at the sun-facing slope. Half of the evapotranspiration of the Picea crassifolia forest and the grassland by the forest at the shaded slope is consumed by transpiration. After precipitation, the soil water storage is increased much more for the Picea crassifolia forest and also more for the grassland by the forest at the shaded slope. Therefore the shaded slope vegetation, especially the forest is favorable for soil water storage. | KANG Ersi1, CHENG Guodong1, , SONG Kechao1, JIN Bowen1, , LIU Xiande3 2 3 & WANG Jinye3 1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China 2. State Key Laboratory of Frozen Soil Engineering, Chinese Academy of Sciences, Lanzhou 730000, China 3. Academy of Water Resources Conservation Forest of Qilian Mountains, Gansu Province, Zhangye 734000, China | 2005 | Science China Earth Sciences2005，48，4： | 25 |
| 6 | The biomass and aboveground net primary productivity of Schima superba-Castanopsis carlesii forests in east China显示文摘The biomass and productivity of Schima superba-Castanopsis carlesii forests in Tiantong,Zhejiang Province,were determined using overlapping quadrants and stem analyses.The total community biomass was(225.3±30.1) t hm-2,of which the aboveground parts accounted for 72.0% and the underground parts accounted for 28.0%.About 87.2% of biomass existed in the tree layer.The resprouting biomass was small,of which over 95.0% occurred in the shrub layer.The productivity of the aboveground parts of the community was(386.8±98.9) g m-2a-1,in which more than 96.0% was present at the tree level.The trunk's contribution to productivity was the greatest,while that of leaves was the smallest.In China,the community biomass of subtropical evergreen broadleaved forests differs significantly with the age of the forest.The community biomass of the 52-year-old S.superba-C.carlesii forests in this study was lower than the average biomass of subtropical evergreen broadleaved forests in China,and was lower than the biomass of other subtropical evergreen broadleaved forests elsewhere in the world.Moreover,its productivity was lower than the model estimate,indicating that without disturbance,this community has great developmental potential in terms of community biomass and productivity. | YANG TongHui1,2,SONG Kun1,DA LiangJun1*,LI XiuPeng3 & WU JianPing1 1School of Resources and Environment Science,East China Normal University,Shanghai 200062,China 2Ningbo Academy of Agricultural Science,Ningbo 315040,China 3Ningbo Technology Extension Center for Forestry and Specialty Forest Products,Ningbo 315012,China | 2010 | Science China(Life Sciences)2010，53，7： | 23 |
| 7 | Biomass and carbon dynamics of a tropical mountain rain forest in China显示文摘Biometric inventories for 25 years,from 1983 to 2005,indicated that the Jianfengling tropical mountain rain forest in Hainan,China,was either a source or a modest sink of carbon.Overall,this forest was a small carbon sink with an accumulation rate of(0.56±0.22) Mg C ha-1yr-1,integrated from the long-term measurement data of two plots(P9201 and P8302).These findings were similar to those for African and American rain forests((0.62±0.23) Mg C ha-1yr-1).The carbon density varied between(201.43±29.38) Mg C ha-1 and(229.16±39.2) Mg C ha-1,and averaged(214.17±32.42) Mg C ha-1 for plot P9201.Plot P8302,however,varied between(223.95±45.92) Mg C ha-1 and(254.85±48.86) Mg C ha-1,and averaged(243.35±47.64) Mg C ha-1.Quadratic relationships were found between the strength of carbon sequestration and heavy rainstorms and dry months.Precipitation and evapotranspiration are two major factors controlling carbon sequestration in the tropical mountain rain forest. | CHEN DeXiang1*,LI YiDe1,LIU HePing2,XU Han1,XIAO WenFa3,LUO TuShou1,ZHOU Zhang4 & LIN MingXian1 1Research Institute of Tropical Forestry,Chinese Academy of Forestry,Guangzhou 510520,China 2Department of Physics,Atmospheric Science and Geoscience,Jackson State University,MS 39217,USA 3Research Institute of Forest Ecology,Environment and Protection,Chinese Academy of Forestry,Beijing 100091,China 4Department of Ecology,College of Urban and Environmental Sciences,Peking University,Beijing 100872,China | 2010 | Science China(Life Sciences)2010，53，7： | 20 |
| 8 | 涡轮叶栅前缘上游端壁气膜冷却的流场实验研究显示文摘对前缘上游端壁有单排和双排孔冷却的大尺寸低速涡轮导向叶栅进行了气动测量、热示踪和端壁流场显示 ,在吹风比 1~ 3范围获得了叶栅内的详细流场、冷气的空间分布和端壁上的流动图案。结合先前测得的没有冷却时的流场数据 ,这些结果表明端壁气膜冷却对叶栅流场结构有重大影响 ,吹风比是主宰射流与二次流间相互作用的主要因素 ,双排孔喷射使冷气比单排孔喷射更贴近端壁。低吹风比喷射冷气不能到达压力面并被二次流逐渐卷离端壁 ;中吹风比喷射有效的抑制了二次流的形成 ,并使端壁流线偏向于无粘流流线 ,冷气很均匀的覆盖在端壁上 ;高吹风比喷射可将冷气抛射到压力面上 ,双排孔情况下甚至使二次流反向 。 | 刘高文 刘松龄 许都纯 Lapw orth B L Forest A E | 2001 | 航空动力学报2001，16，2： | 20 |
| 9 | 涡轮叶栅前缘上游端壁气膜冷却的传热实验研究显示文摘对前缘上游有单排和双排孔冷却的涡轮导向叶栅端壁进行了详细的传热实验 ,在吹风比 1 ,2 ,3下获得了当地气膜冷却效率和换热系数 ,结合流场测量结果分析了端壁冷却和换热规律。结果表明端壁气膜冷却在很大程度上受二次流的影响 ,冷却效果主要由吹风比决定 ,低吹风比喷射时 ,压力面附近的一个三角形区域没有冷气的覆盖 ,中、高吹风比喷射可以大幅度提高平均冷却效率并使冷气很均匀的覆盖在端壁上 ,双排孔喷射比单排孔喷射平均效率提高 1倍左右。结果还表明尽管冷气喷射使端壁换热系数随吹风比的增大而显著增大 ,气膜冷却还是能有效的降低端壁的热负荷 ,其中以中吹风比双排孔喷射的效果最为显著。 | 刘高文 刘松龄 朱惠人 Lapworth B L Forest A E | 2001 | 航空动力学报2001，16，3： | 15 |
| 10 | Evaluation of ecosystem services of Chinese pine forests in China显示文摘Evaluation of forest ecosystem services is a hot topic,both in China and at abroad,but it has not yet obtained a consistency of evaluation indicator systems and evaluation methods.Under the framework of evaluation criteria to be implemented for forest ecosystem services,years of consecutive observation data from Long Term Ecological Research Stations affiliated to Chinese Forest Ecosystem Research Network(CFERN),forest resource inventory and public data were applied to carry out a detailed and dynamic evaluation on the physical quantity and value of ecosystem services of Chinese pine forests in China.The results showed that the above services had the total value and unit value of 1144.9640 billion(1.1449640×10 12 )RMB and 52.074 thousand RMB per hectare per year,respectively during the 9th Five-year Plan(1996―2000),and of 1190.5461 billion RMB and 52.101 thousand RMB per hectare per year,respectively,during the 10th Five-year Plan(2001―2005).For Chinese pine forests,water conservation was 40.40 hundred million cubic meters annually,soil conservation was 67 million tons and C fixation 9 million tons annually,production of healthful negative ions was 1.96×10 20 , absorption of SO2 was 5.02 hundred million kilograms and dust-catching was 759.10 hundred million kilograms. Among the 15 provinces of China with Chinese pine forests,the biggest beneficiary from ecosystem services was Liaoning Province;while Hunan Province was the smallest beneficiary between the 9th Five-year Plan. | GUO Hao ,WANG Bing,MA XiangQian,ZHAO GuangDong&LI ShaoNing Research Institute of Forest Ecology Environment and Protection of CAF,Key Laboratory of Forest Ecological Environment of State Forestry Administration,Beijing 100091,China | 2008 | Science China(Life Sciences)2008，51，7： | 14 |
| 11 | 中国人造板产业报告(精简版)显示文摘综述了经济发展新常态下中国人造板产业2014年的整体发展状况;以详实的数据从生产能力、产量与生产技术、国际贸易三方面阐述了胶合板、纤维板、刨花板'三板'的发展现状;并对未来中国人造板产业的发展进行了预测。 | China National Forest Products Industry Association | 2015 | 林产工业2015，42，11： | 12 |
| 12 | Environmental Implications of Excessive Selenium: A Review显示文摘Selenium is a naturally occurring trace element that is nutritionally required in smallamounts but it can become toxic at concentrations only twice those required. The narrow mar-gin between beneficial and harmful levels has important implications for human activities thatincrease the amount of selenium in the environment. Two of these activities, disposal of fbssilfuel wastes and agricultural irrigation of arid, seleniferous soils, have poisoned fish andwildlife, and threatened public health at several locations in the United States. Research stud-ies of these episodes have generated a data base that clearly illustrates the environmental hazardof excessive selenium. It is strongly bioaccumulated by aquatic organisms and even slight in-creases in waterborne concentrations can quickly result in toxic effects such as deformed em-bryos and reproductive failure in wildlife. The selenium data base has been very beneficial indeveloping hazard assessment procedures and establishing environmentally sound water qualitycriteria. The two faces of selenium, required nutrient and Potent toxin, make it a particularlyimportant trace element in the health of both animals and man. Because of this paradox, envi-ronmental selenium in relation to agriculture, fisheries, and wildlife wiIl continue to raise im-POrtant land and water management issues for decades to come. If these issues are dealt withusing prudence and the available environmental selenium data base, adverse irnpacts to naturalresources andspublic health can be | A. DENNIS LEMLY(United States Forest Service, Southern Research Station, Coldwater Fisheries Research Unit, Department of Fisheries and Wildlife Sciences, Virginia Tech University, Blacksburg, VA 24061-0321, USA) | 1997 | Biomedical and Environmental Sciences1997，10，4： | 10 |
| 13 | Synchronous estimation of DTM and fractional vegetation cover in forested area from airborne LIDAR height and intensity data显示文摘We proposed a method to separate ground points and vegetation points from discrete return,small footprint airborne laser scanner data,called skewness change algorithm.The method,which makes use of intensity of laser scanner data,is especially applicable in steep,and forested areas.It does not take slope of forested area into account,while other algorithms consider the change of slope in steep forested area.The ground points and vegetation points can be used to estimate digital terrain model(DTM) and fractional vegetation cover,respectively.A few vegetation points which were classified into the ground points were removed as noise before the generation of DTM.This method was tested in a test area of 10000 square meters.A LiteMapper -5600 laser system was used and a flight was carried out over a ground of 700―800 m.In this tested area,a total number of 1546 field measurement ground points were measured with a total station TOPCON GTS-602 and TOPCON GTS -7002 for validation of DTM and the mean error value is -18.5 cm and the RMSE(root mean square error) is ±20.9 cm.A data trap sizes of 4m in diameter from airborne laser scanner data was selected to compute vegetation fraction cover.Validation of fractional vegetation cover was carried out using 15 hemispherical photographs,which are georeferenced to centimeter accuracy by differential GPS.The gap fraction was computed over a range of zenith angles 10° using the gap light analyzer(GLA) from each hemispherical photograph.The R2 for the regression of fractional vegetation cover from these ALS data and the respective field measurements is 0.7554.So this study presents a method for synchronous estimation of DTM and fractional vegetation cover in forested area from airborne LIDAR height and intensity data. | BAO YunFei1,2,CAO ChunXiang1,ZHANG Hao1,CHEN ErXue3,HE QiSheng1,2,HUANG HuaBing1,LI ZengYuan3,LI XiaoWen1,4 & GONG Peng1 1 State Key Laboratory of Remote Sensing Science,jointly sponsored by the Institute for Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University,Beijing 100101,China 2 Graduate University of the Chinese Academy of Sciences,Beijing 100049,China 3 Institute of Forest Resource Information Technique,the Chinese Academy of Forestry,Beijing 100091,China 4 Research Center for Remote Sensing and GIS,Department of Geography and Beijing Key Laboratory for Remote Sensing of Environment and Digital Sites,Beijing Normal University,Beijing 100875,China | 2008 | Science China(Technological Sciences)2008，51，S2： | 10 |
| 14 | Emissions of volatile organic compounds from heated needles and twigs of Pinus pumila显示文摘A study was conducted to explore the mechanism that emissions of volatile organic compounds(VOC) from heated needles and twigs(200°C,within 15 min) of Pinus pumila affect fire behaviours using the technology of Thermal Desorption-Gas Chromatography-Mass Spectrometry(TD-GC-MS).The results indicated that the main components of VOC from heated needles and twigs are terpenoids.Most of these terpenoids are monoterpenes.Terpenoids account for 72.93% for the needles and 92.40% for the twigs of the total VOC,and their emission ratios are 61.200 μg·g-1 and 217.060 μg·g-1 respectively.Heated twigs can emit more terpenoids than heated needles because twigs had more volatile oils than needles.In actual fires,these large amounts of terpenoid emissions,especially the monoterpene emissions,have strong effects on fire behaviors that are not only in the initial stage but also in the fast propagation stage of fires.These flammable gases are capable of causing violent combustion and creating crown fires.In addition,if these gases accumulate in an uneven geographical area,there will be a possible for eruptive fires and/or fires flashover to occur. | ZHAO Feng-jun SHU Li-fu WANG Qiu-hua WANG Ming-yu TIAN Xiao-ruiInstitute of Forest Ecology,Environment and Protection,Chinese Academy of Forestry Forest Protection Laboratory of State Forestry Administration,Beijing 100091,P.R.China. | 2011 | Journal of Forestry Research2011，22，2： | 8 |
| 15 | 崇明岛典型土地利用方式对土壤有机碳和酶活性的影响显示文摘为了研究上海崇明岛不同土地利用方式对土壤有机碳以及酶活性的影响,对冬小麦地、蔬菜地、柑桔地和冬绿肥地4种土地利用方式的土壤进行了调查、样品测定和分析。结果表明,土地利用方式对有机碳和4种酶活性的影响极显著。冬小麦地总有机碳和活性有机碳质量分数均最高,分别为19.23g·kg-1和2.26mg·g-1,柑桔地土壤脲酶、碱性磷酸酶、纤维素酶和蛋白酶等4种酶活性均高于其他3种土地利用方式,表明采用秸秆还田式的冬小麦地,可以增加土壤总有机碳和活性有机碳质量分数;常年处于免耕状态的柑桔地可以使土壤酶活性增强。 | 王健波 李银生 邱江平 林琪 王秀红 F. Forest S. Boulaki L. Séguy | 2010 | 生态环境学报2010，19，8： | 8 |
| 16 | Characteristics of the microbial community in rhizosphere of Camptotheca acuminata cultured with exotic invasive plant Eupatorium adenophorum显示文摘The traditional culture-dependent plate counting and culture-independent small-subunit-ribosomal RNA gene-targeted molecular techniques, Single-Strand Conformation Polymorphism (SSCP) and ter-minal Restriction Fragment Length Polymorphism (tRFLP) combined with 16S rDNA clone library were adopted to investigate the impacts of secretion from Camptotheca acuminata (abbreviated to Ca) roots on the quantities and structure of eukaryotic microbes and bacteria in the rhizosphere, and the possi-bility that Ca controls exotic invasive plant Eupatorium adenophorum (Ea). The counting results indi-cated that the number of bacteria increased in turn in rhizospheres of Ea, Ca-Ea mixed culture and Ca, while that of eukaryotic microbes decreased. PCR-SSCP profiles showed eukaryotic microbial bands (corresponding to biodiversity) in rhizosphere of Ea were more complex than those of Ca and CE. Meristolohmannia sp., Termitomyces sp. and Rhodophyllus sp. were the dominant populations in the rhizosphere of Ca. Bacterial terminal restriction fragments (TRFs) profiles showed no difference among three kinds of rhizospheres, and the sequences of the 16S rDNA clone library from Ca rhizospheres were distributed in 10 known phyla, in which phylum Proteobacteria were the absolute dominant group and accounted for 24.71% of the cloned sequences (δ-Proteobacteria accounted for up to 17.65%), and phyla Acidobacteria and Bacteroidetes accounted for 16.47% and 10.59% of the cloned sequences, respectively. In addition, high performance liquid chromatography detected a trace amount of camp-tothecin and hydroxycamptothecin in the rhizospheric soil of Ca and CE, but examined neither camp-tothecin nor hydroxycamptothecin in rhizospheric soil of Ea. Therefore, invasion and diffusion of Ea evidently depended on distinguishing the eukaryotic community structure, but not on that of the bac-terial pattern. Ca was able to alter the eukaryotic community structure of invasive Ea by secreting camptothecin and hydroxycamptothecin into rhizospheres, and may benefit the control of overspread of Ea. This study provided theoretical evidence for rhizospheric microbial aspects on substituting Ca for Ea. | ZU YuanGang1, GAO ChongYang1, WANG WenJie1, YANG FengJian1, LIU Ying1, WANG Min1 & ZHAO YangGuo2 1 Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China 2 School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China | 2007 | Science China(Life Sciences)2007，50，1： | 7 |
| 17 | Mechanism of friction reduction of unsaturated fatty acids as additives in diesel fuels显示文摘This paper investigates the effect of unsaturated fatty acid additives on the lubricating properties of a biodiesel,composed of a blend of fatty acid methyl esters(FAMEs)and a conventional diesel fuel.The presence of fatty acids as additives for biodiesel improves their lubricating properties at elevated temperature conditions.The formation of a protective lubricating tribochemical film on the steel contact surfaces has been evidenced.Elevated temperature conditions and possibly oxygen are needed to form this film that reduces friction and limits wear.Several analytical tools have revealed the insulating nature of the formed tribofilm and its chemical properties.Friction-induced reticulation is thought to play a major role in the growth of this insulating film. | Jean Michel MARTIN Christine MATTA Maria-Isabel De Barros BOUCHET Cyrielle FOREST Thierry Le MOGNE Thomas DUBOIS Michael MAZARIN | 2013 | Friction2013，1，3： | 7 |
| 18 | Monitoring of rice crop using ENVISAT ASAR data显示文摘Because of the cloudy conditions during the rice growth period, rice is one of the agri-cultural crops most suited to monitoring with the SAR instruments. Backscatter response measured by SAR is correlated with rice conditions, including height, density, biomass and structure, which are variable at different growing stages. In this paper, multi-date ENVISAT ASAR Alternating Polarization Mode (APMode) imageries were acquired during the rice crop growing cycle. At the same time, the rice parameters were measured in field. A continuous canopy model was used to compute the back-scattering from rice fields during the growth cycle, and the relationship between rice parameters and radar backscattering coefficients from both ASAR and modeling was analyzed. The effects of polari-zation, incidence angle and polarization on radar backscattering coefficients were analyzed. It was found that simulated radar backscatter has similar trends as ASAR data. This will be meaningful for the further research of rice parameters estimation from ASAR data. Different features show signifi-cantly different signatures in ASAR images and they follow some certain laws, so rice area can be accurately mapped by using multi-temporal SAR images, then rice yield can be estimated. | DONG Yanfang1, 2, SUN Guoqing1,3 & PANG Yong4 1. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China 2. Graduate University of Chinese Academy of Sciences, Beijing 100039, China 3. Department of Geography, University of Maryland, College Park, MD 20742, USA 4. Forest Remote Sensing Lab, Research Institute of Forest Resource and Information Technology, Chinese Academy of For-estry, Beijing 100091, China | 2006 | Science China Earth Sciences2006，49，7： | 7 |
| 19 | CO_2 efflux from different forest soils and impact factors in Dinghu Mountain, China显示文摘CO2 fluxes from soils and related environmental factors were measured in three forest ecosystems of Dinghu Mountain using static chamber-gas chromatograph technique for one year. The seasonal pattern of CO2 flux, contribution of litter on total CO2 flux and the correlations of CO2 flux with soil temperature and soil water content were examined for each type of forest. The results were given as followings: (1) The seasonal patterns of CO2 flux from soil of the three types of forest were similar, with a higher CO2 flux in rainy season than in dry season. The comparative relations of mean annual CO2 fluxes between the three sites were expressed as:monsoon forest > mixed forest > pine forest. (2) CO2 fluxes from litter decomposition in monsoon forest, mixed forest and pine forest accounted for 24.43%, 41.75% and 29.23% of the corresponding total CO2 fluxes from forest floor, respectively. (3) Significant relationships were found between CO2 fluxes and soil temperatures at 5 cm depth for the three types of forest, which could be best described by exponential equations. The calculated Q10 values based on soil temperature at 5 cm depth ranged from 1.86 to 3.24. More significant relationships were found between CO2 fluxes and soil water content when the annual variation coefficients of soil moisture were higher. | ZHOU Cunyu, ZHOU Guoyi, ZHANG Deqiang, WANG Yinghong & LIU Shizhong Dinghushan Forest Ecosystem Research Station, Chinese Academy of Sciences, Guangzhou 510650, China Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China | 2005 | Science China Earth Sciences2005，48，z1： | 6 |
| 20 | Remote sensing based shrub above-ground biomass and carbon storage mapping in Mu Us desert,China显示文摘The estimation of above-ground biomass(AGB) and carbon storage is very important for arid and semi-arid ecosystems.HJ-1A/B satellite data combined with field measurement data was used for the estimation of shrub AGB and carbon storage in the Mu Us desert,China.The correlations of shrub AGB and spectral reflectance of four bands as well as their combined vegetation indexes were respectively analyzed and stepwise regression analysis was employed to establish AGB prediction equation.The prediction equation based on ratio vegetation index(RVI)was proved to be more suitable for shrub AGB estimation in the Mu Us desert than others.Shrub AGB and carbon storage were mapped using the RVI based prediction model in final.The statistics showed the western Mu Us desert has relatively high AGB and carbon storage,and that the gross shrub carton storage in Mu Us desert reaches 16 799 200 t,which has greatly contributed to the carbon fixation in northern China. | XU Min 1,2,CAO ChunXiang 1,TONG QingXi 1,LI ZengYuan 3,ZHANG Hao 1,HE QiSheng 1,2,GAO MengXu 1,2,ZHAO Jian 1,2,ZHENG Sheng 1,2,CHEN Wei 1,2 & ZHENG LanFen 1 1State Key Laboratory of Remote Sensing Science,Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University,Beijing 100101,China 2 Graduate School of the Chinese Academy of Sciences,Beijing 100049,China 3 Research Institute of Forest Resources and Information Techniques,Chinese Academy of Forestry,Beijing 10009,China | 2010 | Science China(Technological Sciences)2010，53，S1： | 5 |
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