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| 1 | Spatio-temporal changes of NDVI and its relation with climatic variables in the source regions of the Yangtze and Yellow rivers显示文摘Yangtze 和黄河的来源区域是中国的重要的水保存区域。在最近的年里,全球气候变化和无理的资源开发引起的来源区域的生态的恶化趋势逐渐地增加了。在这份报纸,空间分发和在 Yangtze 和黄河的来源区域的植被盖子的动态变化被分析在最近 10 年基于 1-km 分辨率从 1998 ~ 2007 的多时间的 SPOTVGT-DN 数据。同时,在空气温度,降水,浅地面温度和 NDVI 之间的关联关系,哪个是 3?? | YANG Zhaoping GAO Jixi ZHOU Caiping SHI Peili ZHAO Lin SHEN Wenshou OUYANG Hua | 2011 | Journal of Geographical Sciences2011，21，6： | 24 |
| 2 | Establishment of apparent quantum yield and maximum ecosystem assimilation on Tibetan Plateau alpine meadow ecosystem显示文摘The alpine meadow is widely distributed on the Tibetan Plateau with an area of about 1.2×106kn2. Damxung County, located in the hinterland of the Tibetan Plateau, is the place covered with this typical vegetation. An open-path eddy covariance system was set up in Damxung rangeland station to measure the carbon flux of alpine meadow from July to October,2003. The continuous carbon flux data were used to analyze the relationship between net ecosystem carbon dioxide exchange (NEE) and photosynthetically active radiation (PAR), as well as the seasonal patterns of apparent quantum yield (α) and maximum ecosystem assimilation (Pmax).Results showed that the daytime NEE fitted fairly well with the PAR in a rectangular hyperbola function, with α declining in the order of peak growth period (0.0244 μmolCO2 · μmol-1pAR) >early growth period > seed maturing period > withering period (0.0098 μmolCO2 · μmol-1pAR).The Pmax did not change greatly during the first three periods, with an average of 0.433mgCO2· m-2· s-1, i.e. 9.829 μmolCO2· m-2· s-1. However, during the withering period, Pmax was only 0.35 mgCO2 · m-2 · s-1, i.e. 7.945 μmolCO2 · m-2 · s-1. Compared with other grassland ecosystems, the α of the Tibetan Plateau alpine meadow ecosystem was much lower. | XU Lingling, ZHANG Xianzhou, SHI Peili & YU Guirui Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China Graduate School of the Chinese Acedemy of Sciences, Beijing 100039, China | 2005 | Science China Earth Sciences2005，48，z1： | 23 |
| 3 | Effects of Grazing Exclusion on Plant Productivity and Soil Carbon, Nitrogen Storage in Alpine Meadows in Northern Tibet, China显示文摘Grazing exclusion is widely adopted in restoring degraded alpine grasslands on the Qinghai-Tibetan Plateau. However, its effectiveness remains poorly understood. In this study, we investigated the effects of grazing exclusion on plant productivity, species diversity and soil organic carbon(SOC) and soil total nitrogen(STN) storage along a transect spanning from east to west of alpine meadows in northern Tibet, China. After six years of grazing exclusion, plant cover, aboveground biomass(AGB), belowground biomass(BGB), SOC and STN were increased, but species diversity indices declined. The enhancement of AGB and SOC caused by grazing exclusion was correlated positively with mean annual precipitation(MAP). Grazing exclusion led to remarkable biomass increase of sedge species, especially Kobresia pygmaea, whereas decrease of biomass in forbs and no obvious change in grass, leguminous and noxious species. Root biomass was concentrated in the near surface layer(10 cm) after grazing exclusion. The effects of grazing exclusion on SOC storage were confined to shallow soil layer in sites with lower MAP. It is indicated that grazing exclusion is an effective measure to increase forage production and enhance soil carbon sequestration in the studied region. The effect is more efficient in sites with higher precipitation. However, the results revealed a tradeoff between vegetation restoration and ecological biodiversity. Therefore, carbon pools recover more quickly than plant biodiversity in the alpine meadows. We suggest that grazing exclusion should be combined with other measures to reconcile grassland restoration and biodiversity conservation. | XIONG Dingpeng SHI Peili SUN Yinliang WU Jianshuang ZHANG Xianzhou | 2014 | Chinese Geographical Science2014，24，4： | 21 |
| 4 | Experimental study on soil CO_2 emission in the alpine grassland ecosystem on Tibetan Plateau显示文摘The Tibetan Plateau, the Roof of the World, is the highest plateau with a mean elevation of 4000 m. It is characterized by high levels of solar radiation, low air temperature and low air pressure compared to other regions around the world. The alpine grassland, a typical ecosystem in the Tibetan Plateau, is distributed across regions over the elevation of 4500 m. Few studies for carbon flux in alpine grassland on the Tibetan Plateau were conducted due to rigorous natural conditions. A study of soil respiration under alpine grassland ecosystem on the Tibetan Plateau from October 1999 to October 2001 was conducted at Pangkog County, Tibetan Plateau (31.23°N, 90.01°E, elevation 4800 m). The measurements were taken using a static closed chamber technique, usually every two weeks during the summer and at other times at monthly intervals. The obvious diurnal variation of CO2 emissions from soil with higher emission during daytime and lower emission during nighttime was discovered. Diurnal CO2 flux fluctuated from minimum at 05:00 to maximum at 14:00 in local time. Seasonal CO2 fluxes increased in summer and decreased in winter, representing a great variation of seasonal soil respiration. The mean soil CO2 fluxes in the alpine grassland ecosystem were 21.39 mgCO2 · m-2 · h-1, with an average annual amount of soil respiration of 187.46 gCO2 · m-2 · a-1. Net ecosystem productivity is also estimated, which indicated that the alpine grassland ecosystem is a carbon sink. | ZHANG Xianzhou SHI Peili LIU Yunfen OUYANG Hua | 2005 | Science China Earth Sciences2005，48，z1： | 18 |
| 5 | Effects of livestock exclusion and climate change on aboveground biomass accumulation in alpine pastures across the Northern Tibetan Plateau显示文摘To better understand the ecological and economic benefits of short-term grazing exclusion on the aboveground net primary productivity(ANPP)of alpine pastures,we conducted annual multi-site transect surveys in the summers from 2009 to 2011 and calculated the aboveground biomass discrepancy(ABD)between grazed and ungrazed pastures at plant community and economic group levels for three zonal alpine grassland types—meadow,steppe,and desert-steppe—across the northern Tibetan Plateau.Our results indicated that aboveground biomass(AGB)significantly differed among grassland types and declined northwesterly from 64.07 to11.44 g m-2with decreasing precipitation and increasing temperature.The mean ABD exhibited considerable community dependency,with meadow(12.47 g m-2)[steppe(6.91 g m-2)[desert steppe(2.54 g m-2),and it declined from 25.42 to 1.29 g m-2with decreasing precipitation and increasing temperature.‘Good forage’,i.e.grasses and sedges,benefited most from grazing exclusion,followed by edible forbs.With longer grazing exclusion durations(GEDs),the aboveground biomass of poisonous locoweeds initially decreased and then increased compared with the adjacent grazed sites.In the nested analysis of co-variances with a general linear model,growing season precipitation(GSP;from May to September)accounted for 52.67%ofthe observed variation in AGB,followed by AGT(9.77%)and pasture management systems(PMSs;grazing or grazing-excluded,5.31%).The variation in ABD was explained primarily by AGT(16.52%),GED(20.25%),and the interaction of AGT 9 GED(19.58%).Our results confirm that precipitation is the primary factor controlling the ANPP of alpine grasslands on the Northern Tibetan Plateau and that the ecological benefits arising from grazing exclusion are also partly dependent on grassland type and exclusion duration.Therefore,spatial and temporal variations in growing season precipitation and plant functional traits or economic group composition should be jointly considered when developing policies concerning the management and spatial layouts of grazing exclosures in this region. | Jianshuang Wu Xianzhou Zhang Zhenxi Shen Peili Shi Chengqun Yu Baoxiong Chen | 2014 | Chinese Science Bulletin2014，59，32： | 11 |
| 6 | Effect of solar radiation on net ecosystem CO_2 exchange of alpine meadow on the Tibetan Plateau显示文摘在西藏的高原上,高山的草地是最普遍的植被类型。高山的草地在成长季节有低生物生产率和低植被范围。在空气和高山的草地生态系统之间旧姓的白天被太阳的放射影响。分析变化的特征在旧姓并且在不同太阳的放射环境计算与光合作用和呼吸有关的参数,旧姓的大小用旋涡协变性技术在 2003, 2004, 2005 和 2006 从 7 月在 Damxung 被带去 8 月。太阳的放射根据网放射被组织进三个层次,哪个是在晴朗的天的超过 155 W m2 d1, 144 挠浡牥吗? | FAN Yuzhi ZHANG Xianzhou WANG Jingsheng SHI Peili | 2011 | Journal of Geographical Sciences2011，21，4： | 5 |
| 7 | Agricultural Land Suitability of Production Space in the Taihang Mountains, China显示文摘The contradiction between the shortage of land for agriculture due to rapid expansion of industrialization and urbanization and increasing population pressure is projected to impose great threats to future food security.Agricultural land suitability evaluation is an effective approach to improve the utilization of land resources for crop production and thus enhance the capacity of food provision.In this study, we evaluated the land suitability for agriculture of the production space in the Taihang Mountains by three steps: establishing indicator system, determining weights for indicators, and constructing a fuzzy matter-element model to assess the grades of suitability.Results showed that the land suitability had a significant linear correlation with potential crop yields, indicating our evaluation was effective to predict crop production.The spatial pattern of land suitability for crop production demonstrated that land with higher suitability was generally located in piedmont plains and basins, while land with lower suitability was mostly situated in mountainous areas.The area of highly, moderately, marginally suitable and unsuitable land for agriculture was 32.13%, 28.58%, 37.49% and 1.80% of the production space, respectively.However, the correlation degree analysis indicated that the requirements of these four suitability grades were currently not satisfied but could be potentially fulfilled.In terms of indicator weights, soil properties were much more important than topography and location conditions to influence the grades of suitability.Among all indicators, slope, soil organic matter, soil texture and soil depth were the most influential factors, so slope farming prevention and organic fertilization were most likely to improve land suitability for agriculture.Compared the outputs of our land suitability evaluation model with the distribution of the existing croplands, we found that about 66.52% of marginally suitable and 54.55% of unsuitable land for agriculture were currently used for croplands.Therefore, de-farming policy should be implemented in areas of these two suitability grades.In contrast, cropland expansion was encouraged in the land that was highly or moderately suitable for agriculture.Our evaluation of agricultural land suitability is beneficial for future land use planning and decision-making in the Taihang Mountains. | GENG Shoubao SHI Peili ZONG Ning ZHU Wanrui | 2019 | Chinese Geographical Science2019，29，6： | 4 |
| 8 | Application of contrast-enhanced ultrasound in minimally invasive ablation of benign thyroid nodules显示文摘Objective:This study aimed to investigate the application value of contrast-enhanced ultrasound(CEUS)before and after minimally invasive ablation procedures for benign thyroid nodule(s)(BTN).Methods:This prospective study included patients with BTNs scheduled to undergo ultrasound-guided minimally invasive ablation treatment.CEUS was performed before and after ablation(at 1 day,and 1,6,and 12 months after ablation).Changes in microvascular perfusion and the volume of BTNs were noted and assessed.Results:Sixty-two patients(62 BTNs),who underwent ablation procedures between June 2016 and August 2020,were included.All lesions were confirmed by biopsy,and histopathological results were obtained before ablation treatment.On preoperative CEUS,the lesions exhibited hyperenhancement(53.23%)or iso-enhancement(46.77%)during the arterial phase,and all lesions exhibited iso-enhancement in the venous and late phases.One day after ablation,none of the BTNs exhibited obvious enhancement on CEUS.One(1.61%)lesion was retreated due to a nodule-like enhancement area detected by CEUS at the 6-month follow-up.The mean nodular volume reduction rate(VRR)at 1,6,and 12 months follow-up demonstrated no significant difference between the two ablation groups(microwave ablation versus radiofrequency ablation).Twelve months after ablation,the mean(±SD)VRR of all BTNs was 60.3±10.3%.Conclusion:CEUS helped guide treatment decisions for BTNs before ablation treatment.Moreover,it could also be used to accurately and noninvasively evaluate treatment efficacy. | Jiaying Cao Peili Fan Feihang Wang Shuainan Shi Lingxiao Liu Zhiping Yan Yi Dong Wenping Wang | 2022 | Journal of Interventional Medicine2022，5，1： | 3 |
| 9 | Apparent quantum yield of photosynthesis of winter wheat and its response to temperature and intercellular CO_2 concentration under low atmospheric pressure on Tibetan Plateau显示文摘The Tibetan Plateau is characterized by lower atmospheric pressure, lower air temperature and high daily and seasonal variation due to high elevation. The photosynthesis of plants is significantly influenced by these alpine environmental factors. Apparent quantum yield (αA) is one of the basic parameters of photosynthesis and mass production. Its accuracy determination is of significance to model photosynthesis of C3 plants and global change on the plateau. In the Lhasa Plateau Ecological Station with 65.4 kPa of atmospheric pressure at an elevation of 3688 m, Li-Cor 6400 portable photosynthesis system was used to measure light response curves of winter wheat in different temperatures and intercellular CO2 concentration (Ci).The slope of light response curve in weak light area of PFD from 0 to 150 μmol m-2 S-1 was used to evaluate the value of αA. The dependence of αA on temperature and intercellular concentration was analyzed. In 30℃, the average value of αAWaS 0.0476 ± 0.0038. It is not quite different from the values in low elevation areas. αA is influenced both by temperature and by the ratio of CO2and O2 partial pressure ([CO2]/[O2]). The measured values in the previous study were much lower.This might be due to systematic errors from instrument and data processing methods. The values of αA decreased linearly with temperature. It decreased 0.0007 in every 1℃ increase of temperature. The decrease slope is similar to those of C3 plants in the previous researches. While [O2] is constant, αA increases with Ciwith a hyperbolic relationship. In comparison with low elevation areas, the αA on the Tibetan Plateau is more sensitive to increase of CO2. | SHI Peili ZHANG Xianzhou ZHONG Zhiming | 2005 | Science China Earth Sciences2005，48，z1： | 2 |
| 10 | 兴都库什喜马拉雅地区高海拔树木生长对气候变化的响应显示文摘高海拔地区快速升温可能导致树木对温度响应更为敏感,而限制高海拔地区树木生长的关键气候因子以及气候变化对树木生长产生多大程度的影响尚不清楚。本研究在兴都库什喜马拉雅地区收集了73个样点的树轮数据,包括3个优势属的树种(Abies属、Juniperus属和Picea属),样点海拔均在3000 m以上。将时间动态规整(dynamic time warping)的方法用于建立亚区域年表,以考虑不同站点年表之间变化的同步性。同时,定量分析了气候因子对树木生长的贡献以及树木生长与气候因子关系的时空动态。研究结果发现,73个站点年表可以聚为3类,且与其所处的生物气候区相对应,即西喜马拉雅地区,中东喜马拉雅地区和藏东南地区。在干旱的西喜马拉雅地区,树木生长与冬、春两季的降水呈正相关关系,而在湿润的藏东南地区,树木生长与冬季温度和春季降水呈正相关关系。树木生长受最低温度的影响最大,特别是冬季温度,其重要性从西到东呈现递增趋势。滑动窗口相关分析表明,在中西喜马拉雅地区,影响树木生长的冬季温度信号在减弱,然而在藏东南地区该信号随着1980年以来的快速升温而增强。本研究结果表明,若该地区升温持续,在西喜马拉雅地区可能会因变暖引起的水分亏缺而造成森林衰退,而在藏东南地区因树木生长得益于变暖而使得森林扩张。 | Lili Zheng Narayan Prasad Gaire Peili Shi | 2021 | Journal of Plant Ecology2021，14，5： | 1 |
| 11 | Lagged climatic effects on carbon fluxes over three grassland ecosystems in China显示文摘Aims The plasticity of ecosystem responses could buffer and post-pone the effects of climates on ecosystem carbon fluxes,but this lagged effect is often ignored.In this study,we used carbon flux data collected from three typical grassland ecosystems in China,including a temperate semiarid steppe in Inner mongolia(Neimeng site,Nm),an alpine shrub-meadow in Qinghai(Haibei site,Hb)and an alpine meadow steppe in Tibet(Dangxiong site,DX),to examine the time lagged effects of environmental factors on CO_(2) exchange.Methods Eddy covariance data were collected from three typical Chinese grasslands.In linking carbon fluxes with climatic factors,we used their averages or cumulative values within each 12-month period and we called them‘yearly’statistics in this study.To investigate the lagged effects of the climatic factors on the car-bon fluxes,the climatic‘yearly’statistics were kept still and the‘yearly’statistics of the carbon fluxes were shifted backward 1 month at a time.Important Findingssoil moisture and precipitation was the main factor driving the annual variations of carbon fluxes at the alpine Hb and DX,respectively,while the Nm site was under a synthetic impact of each climatic factor.The time lagged effect analysis showed that temperature had several months,even half a year lag effects on Co2 exchange at the three studied sites,while moisture’s effects were mostly exhibited as an immediate manner,except at Nm.In general,the lagged climatic effects were relatively weak for the alpine ecosystem.our results implied that it might be months or even 1 year before the variations of ecosystem carbon fluxes are adjusted to the current climate,so such lag effects could be resistant to more frequent climate extremes and should be a critical component to be considered in evaluating ecosystem stability.an improved knowledge on the lag effects could advance our understanding on the driving mechanisms of climate change effects on ecosystem carbon fluxes. | Tao Zhang Mingjie Xu Yi Xi Juntao Zhu Li Tian Xianzhou Zhang Yanfen Wang Yingnian Li Peili Shi Guirui Yu Xiaomin Sun Yangjian Zhang | 2015 | Journal of Plant Ecology2015，8，3： | 1 |
| 12 | Temperature and precipitation control of the spatial variation of terrestrial ecosystem carbon exchange in the Asian region显示文摘 | Zhi Chen Guirui Yu Jianping Ge Xiaomin Sun Takashi Hirano Nobuko Saigusa Qiufeng Wang Xianjin Zhu Yiping Zhang Junhui Zhang Junhua Yan Huimin Wang Liang zhao Yanfen Wang Peili Shi Fenghua Zhao | 2013 | Agricultural and Forest Meteorology2013，，： | 1 |
| 13 | Responses of ecosystem respiration and its components to fertilization in an alpine meadow on the Tibetan Plateau显示文摘 | Jing Jiang Ning Zong Minghua Song Peili Shi Weiling Ma Gang Fu Zhenxi Shen Xianzhou Zhang Hua Ouyang | 2013 | European Journal of Soil Biology2013，，： | 1 |
| 14 | Diurnal and seasonal variability of soil CO2 efflux in a cropland ecosystem on the Tibetan Plateau显示文摘 | Peili Shi Xianzhou Zhang Zhiming Zhong | 2005 | Agricultural and Forest Meteorology2005，，： | 1 |
| 15 | Estimating air temperature of an alpine meadow on the Northern Tibetan Plateau using MODIS land surface temperature显示文摘 | Gang Fu Zhenxi Shen Xianzhou Zhang Peili Shi Yangjian Zhang Jianshuang Wu | 2010 | Acta Ecologica Sinica2010，，1： | 1 |
| 16 | Diurnal and seasonal variability of soil CO2 efflux in a cropland ecosystem on the Tibetan Plateau 显示文摘 | SHI Peili ZHANG Xianzhou ZHONG Zhiming | 2006 | Agricultural and Forest Meteorology2006，137，3： | 1 |
| 17 | Nitrogen and carbonsource-sink relationships in trees at the Himalayan tree lines com-pared with lower elevation ships 显示文摘 | Li Maihe Xiao Wenfa Shi Peili | 2008 | Plant Cell Environment2008，31，10： | 1 |
| 18 | Fostering Harmonious Coexistence of Man and Nature through Conserving Eco-agricultural Practices显示文摘Nature is the home for human survival and development. The ideal state of the planet is the harmonious relationship between man and nature. For thousands of years, the holistic concept of ancient Chinese philosophy, i.e., theory of harmony, has influenced Chinese thoughts and formed the roots of China's traditional eco-agricultural practices. | SHI Peili | 2021 | Journal of Resources and Ecology2021，12，4： | 0 |
| 19 | 优势种对藏北草原群落稳定性具有主导作用显示文摘优势种作为群落动态和生态系统的重要驱动因素,对生物条件以及与其他物种的相互作用具有强烈的影响,这一现象在高寒草地生态系统中尤其明显。然而,不同生态系统中优势种对群落稳定性的影响作用却知之甚少。本文研究了藏北草原4大高寒草地(高寒草甸、高寒草甸草原、高寒草原和高寒荒漠草原)地上生产力的时间稳定性(2014-2020年)和群落稳定性机制,并分析了群落特征和物种组成的变化。研究结果表明,高寒草甸的群落稳定性显著高于其他3种草地。这种差异主要归因于高寒草甸较高的补偿效应和选择效应。此外,优势种通过增加其稳定性和异步性来维持群落稳定性。这些研究结果表明了优势种作为群落的基础物种,可能在塑造高寒草原群落稳定性方面发挥着主导作用。因此,在日益加剧的环境波动下,保护优势种对于脆弱生态系统稳定生态系统功能至关重要。 | Ge Hou Peili Shi Tiancai Zhou Jian Sun Ning Zong Minghua Song Xianzhou Zhang | 2023 | Journal of Plant Ecology2023，16，3： | 0 |
| 20 | Characteristics of net ecosystem carbon dioxide exchange(NEE)from August to October of Alpine meadow on the Tibetan Plateau,China显示文摘The Alpine meadow is one of the vegetation types widely distributed on the Tibetan Plateau in China with an area of about 1.2 million square kilometers.The Damxung rangeland station,located in the hinterland of the Tibetan Plateau,is covered with an typical vegetation.The continuous carbon flux data(from August to middle October,2003)measured with the open-path eddy covariance system was used to analyze the diurnal variation pattern of net ecosystem carbon dioxide exchange(NEE)and its relationship with the environmental factors,such as photosynthetically active radiation(PAR),precipitation,and temperature.Results showed that NEE presented obvious diurnal variation pattern with single-peak of diurnal maximum carbon assimilation at 11:00^(−1)2:00(local time)with an average of-0.268 mg CO_(2)⋅m^(−2)⋅s^(−1),i.e.,-6.08μmol CO_(2)⋅m^(−2)⋅s^(−1).During the daytime,NEE fitted fairly well with PAR in a rectangular hyperbola function with the apparent quantum yield(0.0203μmol CO_(2)μmol^(−1)PAR)and maximum ecosystem assimilation(9.7411μmol CO_(2)⋅m^(−2)⋅s^(−1)).During the night-time,NEE showed a good exponential relation with the soil temperature at 5 cm depth. | XU Lingling ZHANG Xianzhou SHI Peili YU Guirui SUN Xiaomin | 2006 | Frontiers in Biology2006，1，4： | 0 |
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