维普中文期刊产品整合服务
30篇 您的检索式:作者名="Honglang Li"
    题名 作者 年代 出处 被引量
1Integrated study of the water–ecosystem–economy in the Heihe River Basin显示文摘The ecological water diversion project in the Heihe River Basin is the irst successful case in China in which the ecological systems in a river basin have been rescued. his project serves as a valuable example for the management of ecosystems in other inland river basins. his paper reviews the integrated studies of the water–ecosystem–economy relationship in the Heihe River Basin and concludes that sustainable development in inland river basins requires the basin to be considered as a whole, with the relationships between the upstream, midstream and downstream areas of the basin coordinated appropriately. Successful development in these basins will be relected in an improved output per cubic meter of water and the implementation of integrated river basin management practices.Guodong Cheng Xin Li Wenzhi Zhao Zhongmin Xu Qi Feng Shengchun Xiao Honglang Xiao 2014National Science Review2014,1,3:55
2Isotopic evidence for the moisture origin and composition of surface runoff in the headwaters of the Heihe River basin显示文摘We investigated the moisture origin and contribution of different water sources to surface runoff entering the headwaters of the Heihe River basin on the basis of NECP/NCAR(National Centers for Environmental Prediction/National Center for Atmospheric Research) re-analysis data and variations in the stable hydrogen and oxygen isotope ratios(δ D and δ 18O) of precipitation,spring,river,and melt water. The similar seasonality in precipitation δ 18O at different sites reveals the same moisture origin for water entering the headwaters of the Heihe River basin. The similarity in the seasonality of δ 18O and d-excess for precipitation at Yeniugou and Urumchi,which showed more positive δ 18O and lower d-excess values in summer and more negative δ 18O and higher d-excess values in winter,indicates a dominant effect of westerly air masses in summer and the integrated influence of westerly and polar air masses in winter. Higher d-excess values throughout the year for Yeniugou suggest that in arid inland areas of northwestern China,water is intensively recycled. Temporal changes in δ 18O,δ D,and d-excess reveal distinct contributions of different bodies of water to surface runoff. For example,there were similar trends for δ D,δ 18O,and d-excess of precipitation and river water from June to September,similar δ 18O trends for river and spring water from December to February,and similar trends for precipitation and runoff volumes. However,there were significant differences in δ 18O between melt water and river water in September. Our results show that the recharge of surface runoff by precipitation occurred mainly from June to mid-September,whereas the supply of surface runoff in winter was from base flow(as spring water) ,mostly with a lower runoff amount.ZHAO LiangJu YIN Li XIAO HongLang CHENG GuoDong ZHOU MaoXian YANG YongGang LI CaiZhi ZHOU Jian 2011Chinese Science Bulletin2011,56,4:35
3Ecohydrological change mechanism of a rainfed revegetation ecosystem at southeastern edge of Tengger desert,Northwest China显示文摘Study is made on a 45 km-long artificial ecosystem without irrigation in Tengger desert on the basis of long-term ecological monitoring and ecohydrological fundamentals.Changes in water allocation, utilization, cycle and balance patterns in more than 40-year evolution of the soil-plant system are analyzed. The formation of a drought horizon in shrub rhizosphere and its effect, ecohydrological function of the crust and its effect on the soil-plant system change are discussed. Driven by water self-regulation and water stress, the soil-plant system is going to develop towards the steppe desert to ensure more effective use and optimum collocation of water resource.XIAO Honglang CHENG Guodong LI Xinrong SONG Yaoxuan WANG Xinping 2004Science China Earth Sciences2004,47,z1:9
4Vicissitude of Sogo Nur and environmental-climatic change during last 1500 years显示文摘Lakes in arid zone are sensitive to climatic changes. The lacustrine sediment sequence in Sogo Nur has well and truly recorded climatic events such as the Sui-Tang Dynasty Warm Period, the Song-Liao Dynasty Cold Period, the Medieval Warm Period, the Little Ice Age and the 20th Century Warm Period. Commonly, the climate in warm Periods was relatively humid,accordingly the lake area extended and water level rose, and vice versa. Apart from climatic change, human activity is also an important factor of influencing lake vicissitude, and they played the dominant role alternatively during different periods; the factor of climatic change predominated in historical period, while since the beginning of the 20th century the utilization of water resources by human has became decisive.JIN Heling, XIAO Honglang, SUN Liangying, ZHANG Hong, SUN Zhong & LI XiaozeKey Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China School of Resources and Environment, Lanzhou University, Lanzhou 730000, China 2004Science China Earth Sciences2004,47,z1:6
5A Combining Call Admission Control and Power Control Scheme for D2D Communications Underlaying Cellular Networks显示文摘As device-to-device(D2D) communications usually reuses the resource of cellular networks, call admission control(CAC) and power control are crucial problems. However in most power control schemes, total data rates or throughput are regarded as optimization criterion. In this paper, a combining call admission control(CAC) and power control scheme under guaranteeing QoS of every user equipment(UE) is proposed. First, a simple CAC scheme is introduced. Then based on the CAC scheme, a combining call admission control and power control scheme is proposed. Next, the performance of the proposed scheme is evaluated. Finally, maximum DUE pair number and average transmitting power is calculated. Simulation results show that D2 D communications with the proposed combining call admission control and power control scheme can effectively improve the maximum DUE pair number under the premise of meeting necessary QoS.Xujie Li Wenna Zhang Honglang Zhang Wenfeng Li 2016China Communications2016,13,10:5
6Stable isotope techniques in plant water sources:a review显示文摘The stable hydrogen and oxygen isotopes widely exist in various kinds of natural water.Plants have to cope with various water sources:rainwater,soil water,groundwater,sea water,and mixtures.These are usually characterized by different isotopic signatures (18O/16O and D/H ratios).Because there are relative abundance variations in water,and plant roots do not discriminate against specific water isotopes during water uptake,hydrogen and oxygen stable isotope ratios of water within plants provide new information on water sources,interactions between plant species and water use patterns under natural conditions.At present,the measurement of δD,δ18O composition of various potential water sources and stem water has become significant means to identify plant water sources.Based on previous studies,this review highlights recent advances such as theory basis,methodology,as well as different spatial and temporal scales,and existed questions and prospects.Stable isotope techniques for estimating plant water sources have provided valuable tools for conducting basic and applied research.Future studies emphasize the modification of preparing methods,isotope technique combined with other measurements,and aerial organs of plant water source should be en-couraged.Qiu Yang HongLang Xiao LiangJu Zhao MaoXian Zhou CaiZhi Li ShengKui Cao 2010Research in Cold and Arid Regions2010,2,2:3
7Effects of salt and alkali stress on Reaumuria soongorica germination显示文摘Seed germination and early seedling growth are crucial stages for plant establishment. Two neutral(Na Cl and Na2SO4) and two alkali(Na HCO3 and Na2CO3) salts were selected to investigate their effects on germination and recovery responses in Reaumuria soongorica. Results show that both salt types significantly reduced germination and radicle elongation. The rate of germination and emergence of R. soongorica seeds continuously decreased as salinity increased, and the time to achieve maximum germination rate was delayed. The speed of seed germination dropped rapidly as salt concentration increased.Alkaline salts restricted the germination rate of R. soongorica seeds, and stresses resulting from alkaline salts and high concentrations of neutral salts resulted in many deformed seedlings. The length of the radicle and germ decreased with increasing salt concentration, but certain concentrations of salt and increased p H promoted germ growth. The results of regression analysis show that salt concentration was the dominant factor inhibiting R. soongorica seed germination rate. Salinity, buffering capacity, and p H all affected embryo growth, but salinity had the most pronounced effect. Seed viability under highly saline conditions appears to be a better indicator of adaptation to saline environments than seed germination under saline conditions.Fang Wang HongLang Xiao XiaoMei Peng Shang Li 2017Research in Cold and Arid Regions2017,9,2:2
8An analysis on ecological civilization construction in Gansu based on a quantified SWOT framework显示文摘Ecological civilization(EC) construction has become one of the key elements of China's reform and development process, since it was put forward at the 17 th National People's Congress(NPC) in 2007 and improved at the 18 th NPC in 2012, and stressed at the third plenary session of the 18 th NPC. The provincial areas are the most important pilot units of EC strategy. Therefore, research on EC at the provincial level can meet the practical demand for EC in China. Based on the existing provincial circumstances in Gansu and its significant position as an ecological barrier in northwestern China, and aiming at the core issue of why and how to build EC in Gansu, this paper employs SWOT(strengths, weaknesses, opportunities, threats) analysis, the Delphi method, and a combined quantitative analysis and coordinate method, and then calculates the relevant strategic orientation angle(θ = 1.4605) and strength coefficient(ρ = 0.53). The results show that Gansu should take an opportunities-dominated strategy, and choose opportunity-strength measures, so the province can increase its internal strengths and decrease its weaknesses with external opportunities. Specific measures are recommended to actively promote an EC construction strategy.LiLi Li HongLang Xiao SongBing Zou Juan Ren 2014Research in Cold and Arid Regions2014,6,6:1
9Modelling the effects of crust on rain infiltration in vegetated sand dunes in arid desert 显示文摘Li Tao Xiao Honglang Li Xinrong 2001Aris Land Research and Management2001,15,:1
10Long- term eeosysytem effecets of sand-binding vegetation in the tengger desert,Northern China显示文摘Li Xinrong Xiao Honglang Zhang Jingguang etal Restoration Ecology0,,:1
11Modelling the effect of crust on rain infiltration in vegetated sand dunes in arid desert 显示文摘Li Tao Xiao Honglang Li Xinrong 2001Arid Land Research and Management2001,15,:1
12Modelling the effect of crest on rain infiltration in vegetated sand dunes in arid desert显示文摘Li Tao Xiao Honglang Li Xinrong 2001Arid Land Research and Management2001,15,:1
13Evolution of soil properties on stabilized sands in the Tengger Desert, China显示文摘Duan Zhenghu Xiao Honglang Li Xinrong Dong Zhibao Wang Gang 2003Geomorphology2003,,1:1
14Modelling the effect of crust on rain infiltration in vegetated sand dunes in arid desert显示文摘Li Tao Xiao Honglang Li Xinrong 2001Arid Land Research and Management2001,15,:1
15Nebkha development and its relationship to environmental change in the Alaxa Plateau, China显示文摘Xunming Wang Honglang Xiao Jinchang Li Mingrui Qiang Zhizu Su 2008Environmental Geology2008,,2:1
16Nebkha development and its relationship to environ- mental change in the Alaxa Plateau,China显示文摘Wang Xunming Xiao Honglang Li Jinchang 2008Envi- ronmental Geology2008,56,2:1
17Finite difference time domain analysis of two-dimensional surface acoustic wave piezoelectric phononic crystals at radio frequency显示文摘The finite-dmerence time-domam(FDTD)method is proposed for analyzing the surface acoustic wave(SAW)propagation in two-dimensional(2D)piezoelectric phononic crystals(PCs)at radio frequency(RF),and also experiments are estabhshed to demonstrate its analysis result of the PCs'band gaps.The FDTD method takes the piezoelectric effect of PCs into account,in which periodic boundary conditions are used to decrease memory/time consumption and the perfectly matched layer boundary conditions are adopted as the SAW absorbers to attenuate artificial reflections.Two SAW delay lines are estabhshed with/without piezoelectric PCs located between interdigital transducers.By removing several echoes with window gating function in time domain,delay lines transmission function is achieved.The PCs'transmission functions and band gaps are obtained by comparing them in these two delay lines.When Aluminum/128°YX-LiNbO_3 is adopted as scatter and substrate material,the PCs'band gap is calculated by this FDTD method and COMSOL respectively.Results show that computational results of FDTD agree well with experimental results and are better than that of COMSOL.TIAN Yahui LI Honglang KE Yabing LUO Wei WEI Jiangbo HE Shitang 2015Chinese Journal of Acoustics2015,34,3:1
18Long-term effects of revegetation on soil water content of sand dunes in arid region of Northern China 显示文摘Li Xinrong Ma Fengyun Xiao Honglang 2004Journal of Arid Environments2004,57,1:1
19E- volution of soil properties on stabilized sands in the Tengger Desert, China显示文摘Duan Zhenghu Xiao Honglang Li Xinrong 2004Geomorphology2004,59,14:1
20Adolescent and adult soy food intake and brest cancer risk: results from the shanghai women s health study显示文摘LEE S A SHU Xiaoou LI Honglang 2009Am J Clin Nutr2009,89,6:1
返回顶部 每页显示:
共2页 首页 上一页 第1页 下一页 末页 /2 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费