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| 1 | Monitoring the impact of climate change and human activities on grassland vegetation dynamics in the northeastern Qinghai-Tibet Plateau of China during 2000–2015显示文摘Climate change and human activities can influence vegetation net primary productivity(NPP), a key component of natural ecosystems. The Qinghai-Tibet Plateau of China, in spite of its significant natural and cultural values, is one of the most susceptible regions to climate change and human disturbances in the world. To assess the impact of climate change and human activities on vegetation dynamics in the grassland ecosystems of the northeastern Qinghai-Tibet Plateau, we applied a time-series trend analysis to normalized difference vegetation index(NDVI) datasets from 2000 to 2015 and compared these spatiotemporal variations with trends in climatic variables over the same time period. The constrained ordination approach(redundancy analysis) was used to determine which climatic variables or human-related factors mostly influenced the variation of NDVI. Furthermore, in order to determine whether current conservation measures and programs are effective in ecological protection and reconstruction, we divided the northeastern Qinghai-Tibet Plateau into two parts: the Three-River Headwater conservation area(TRH zone) in the south and the non-conservation area(NTRH zone) in the north. The results indicated an overall(73.32%) increasing trend of vegetation NPP in grasslands throughout the study area. During the period 2000–2015, NDVI in the TRH and NTRH zones increased at the rates of 0.0015/a and 0.0020/a, respectively. Specifically, precipitation accounted for 9.2% of the total variation in NDVI, while temperature accounted for 13.4%. In addition, variation in vegetation NPP of grasslands responded not only to long-and short-term changes in climate, as conceptualized in non-equilibrium theory, but also to the impact of human activities and their associated perturbations. The redundancy analysis successfully separated the relative contributions of climate change and human activities, of which village population and agricultural gross domestic product were the two most important contributors to the NDVI changes, explaining 17.8% and 17.1% of the total variation of NDVI(with the total contribution >30.0%), respectively. The total contribution percentages of climate change and human activities to the NDVI variation were 27.5% and 34.9%, respectively, in the northeastern Qinghai-Tibet Plateau. Finally, our study shows that the grassland restoration in the study area was enhanced by protection measures and programs in the TRH zone, which explained 7.6% of the total variation in NDVI. | XIONG Qinli XIAO Yang Marwa Waseem A HALMY Mohammed A DAKHIL LIANG Pinghan LIU Chenggang ZHANG Lin Bikram PANDEY PAN Kaiwen Sameh B EL KAFRAWAY CHEN Jun | 2019 | Journal of Arid Land2019，11，5： | 10 |
| 2 | Strategies for increasing the capture, storage, and utilization of precipitation in semiarid regions显示文摘Crop production in semiarid regions is always challenging because of the high variability of amount and distribution of precipitation.These regions become more important each year, however, because the rapidly increasing and more prosperous world population seeks greater consumption of animal products(meat, milk and eggs) that requires additional grain to that consumed directly.The dry areas of the developing world where approximately 40% of the world population lives comprise about 40% of the earth's land area.Crop production, particularly cereal grains, must increase in these areas to meet these growing demands.Grain yield of cereal crops is a function of the amount of water used for evapotranspiration(ET), the portion of ET used for transpiration(T), the units of water as T to produce 1 unit of biomass, and the harvest index(HI).The most important factor is the amount of evapotranspiration not only because it is closely proportional to grain yield, but because it tends to also make the other factors more favorable.Therefore, even small increases in ET can be significant.Strategies for manipulating soil and plant conditions for increasing ET, and how additional ET affects the other factors, are discussed for water deficient areas.The use of crop residues as mulch is highly beneficial but often insufficient in dryland regions or is required for animal feed and fuel.Plastic mulch, mainly restricted to China, has significantly increased grain yields in dryland areas by decreasing evaporation from the soil surface. | B A Stewart LIANG Wei-li | 2015 | Journal of Integrative Agriculture2015，14，8： | 8 |
| 3 | Simulation and fault detection of three-phase induction motors显示文摘 | LIANG B PAYNE B S BALL A D | 2001 | Mathematics and Computers in Simulation2001，61，： | 2 |
| 4 | Differential display of eukarytic messenger RNA by means of the polymerase chain reaction显示文摘 | Liang P Pardee A B | 1992 | Science1992，257，： | 1 |
| 5 | Differential display of eukaryotic messenger RNA by means of the polymerase chain reaction显示文摘 | LIANG P PARDEE A B | 1992 | Science1992，257，5072： | 1 |
| 6 | Management-induced change in labile soil organic matter under continuouscorn in eastern Canadian soils显示文摘 | Liang B C Mackenzie A F Schnitzer M | 1998 | Biology and Fertility of Soils1998，26，： | 1 |
| 7 | LEA proteins in higher plants: structure,function, gene expression and regulation 显示文摘 | Shao H B Liang Z S Shao M A | 2005 | Cotloids Surf B Biointerfaees2005，45，34： | 1 |
| 8 | Clinical utility of serum matrix metalloproteinase-2 and tissue inhibitor of metalloproteinase-2 concentrations in the assessment of liver fibrosis due to chronic hepatitis B显示文摘 | Liang B Li Y Zhao A | | 0，，2： | 1 |
| 9 | Crop rotation and tillage impact on carbon sequestration in Canadian prairie soils显示文摘 | Mcconkey B G Liang B C Campbell C A | 2003 | Soils and Tillage Research2003，74，1： | 1 |
| 10 | Changes of antioxidative enzymes and membrane peroxidation for soil water deficits among 10 wheat genotypes at seedling stage显示文摘 | Shao H B Liang Z S Shao M A | 2005 | Colloids and Surfaces B: Biointerfaces2005，42，： | 1 |
| 11 | Transforming growth factor-beta-induced transcription of the Alzheimer beta-amyloid precursor protein gene involves interaction between the CTCF-complex and Smads显示文摘 | Burton T Liang B Dibrov A | 2002 | Biochem Biophys Res Commun2002，295，3： | 1 |
| 12 | Distribution and doning of eukaryotic mRNAs by rheas of differential display: refinements and optimization 显示文摘 | LIANG P AVERBOUKH L PARDEE A B | 1993 | Nucleic Acids RES1993，21，14： | 1 |
| 13 | Efficient reduction of nitrobenzene to aniline with a biocatalyzed cathode 显示文摘 | WANG A J CHENG H Y LIANG B | 2011 | Environmental Science and Technology2011，45，10： | 1 |
| 14 | Prevalence ofMycoplasma suis (Eperythrozoon suis ) infection inswine and swine-farm workers in Shanghai,Cliina显示文摘 | Yuan C L Liang A B Yao C B | 2009 | Am J Vet Res2009，70，7： | 1 |
| 15 | Differential display of eukaryotic messenger RNA by means of the polymease chain reaction显示文摘 | LIANG P PARDEE A B | 1992 | Science1992，257，5072： | 1 |
| 16 | Management induced change in labile soil organic matter under continuous corn in eastern Canadian soils显示文摘 | LIANG B C MACKENZIE A F SCHNITZER M | 1998 | Biology and Fertilizer Soils1998，26，： | 1 |
| 17 | Prevalence of Mycoplasma suis (Eperythrozoon suis) infection in swine and swine-farm workers in Shanghai,China显示文摘 | YUAN C L LIANG A B YAO C B | 2009 | Am J Vet Res2009，70，7： | 1 |
| 18 | Asymmetrical Stator and Rotor Faulty Detection Using Vibration, Phase Current and Transient Speed Analysis 显示文摘 | LIANG B IWNICKI S D BALL A D | 2003 | Mechanical System and Signal Processing2003，17，4： | 1 |
| 19 | An analysis and algorithm for polygon clipping显示文摘 | LIANG Y BARSKY B A | 1983 | Communications of the ACM1983，26，11： | 1 |
| 20 | Management-induced change in labile soil organic matter under continuous corn in eastern Canadian soils显示文摘 | LIANG B C MacKENZIE A F SCHNIIZER M | 1998 | Biol Fertil Soils1998，26，： | 1 |
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