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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 | Status of HER-2 amplification,polysomy17 and histopathological features of 425 pakistani breast cancer patients显示文摘 | Tariq M Muniba A Waseem I | 2011 | Asian Pac J Cancer Prev2011，12，11： | 1 |
| 3 | Status of HER-2 amplification,polysomyl7 and histopathological features of 425 pakistani breast cancer patients显示文摘 | Tariq M Muniba A Waseem I | 2011 | Asian Pac J Cancer Prey2011，12，11： | 1 |
| 4 | Some iterative methods for solving a system of nonlinear equations显示文摘 | Noor M A Waseem M | 2009 | Computers and Mathematics with Applications2009，57，1： | 1 |
| 5 | Some Iterative Methods for Solving a System of Nonlinear Equations 显示文摘 | Noor M A Waseem M | 2009 | Computers and Mathematics with Applications2009，57，1： | 1 |
| 6 | Keratin 15 expression in stratified epithelia: downregulation in activated keratinocytes 显示文摘 | Waseem A Dogan B Tidman N | 1999 | J Invest Dermatol1999，112，： | 1 |
| 7 | Presentation of systemic lupus erythematosus in emergency department显示文摘 | Waseem M Alsheikh M Hana A | 2007 | Pediatr Emerg Care2007，23，4： | 1 |
| 8 | Recursive kinematics and inverse dynamics for a planar 3R parallel manipulator显示文摘 | Waseem A Khan V Krovi N | 2005 | ASME Journal of Dynamic Systems Measurement and Control2005，127，4： | 1 |
| 9 | Some iterative methods for solving system of nonlinear equations显示文摘 | Noor M A Waseem M | 2009 | Computers and Mathematics with Applications2009，57，： | 1 |
| 10 | Detailed measurements in a pulverized coal flame with natural gas reburning显示文摘 | WASEEM A NAZEER ROERT E JACKSON JACOB A PEART | 1999 | Fuel1999，78，6： | 1 |
| 11 | Some iterative methods for solving a system of nonlinear equations显示文摘 | Noor M A Waseem M | 2009 | Computers and Mathe- matics with Applications2009，57，1： | 1 |
| 12 | Bioluminescent determina- tion of adenosine 5'-triphosphate in blood and milk samples 显示文摘 | Anwar M Yaqoob M Waseem A | 2006 | Journal of the Chemical Society of Pakistan2006，28，4： | 1 |
| 13 | Determination of sulphite using an immobilized enzyme with flow injection chemiluminescence detection显示文摘 | M Yaqoob A Nabi A Waseem | 2004 | Luminescence2004，19，： | 1 |
| 14 | Keratin 15 expression in stratified epithelia:downregulation in activated keratinocytes显示文摘 | Waseem A Dogan B Tidman N | 1999 | J Invest Dermatol1999，112，3： | 1 |
| 15 | Biolumineseem determination of adenosine 5'-triphosphate in blood and milk samples显示文摘 | ANWRM YAQOOB M WASEEM A | 2006 | Journal of the Chemical Society of Pakistan2006，28，4： | 1 |
| 16 | Properties of hot-melt extruded tablet formulations for the colonic delivery of 5-aminosalicylic acid显示文摘 | Bruce LD Shah NH Waseem Malick A | 2005 | Eur J Pharm Biopharm2005，59，1： | 1 |
| 17 | An infant with bloody tears in a pediatric emergency department: Evaluation and treatment-a case report and review of the literature显示文摘 | Kumar K Waseem M Panayiotopoulos A | 2010 | Pediat Allerg Immmunol Pulm2010，23，2： | 1 |
| 18 | Detailed measurements in a pulverized coal flame with natural gas reburning显示文摘 | Nazeer Waseem A Jackson Robert E Peart Jacob A | 1999 | Fuel1999，78，6： | 1 |
| 19 | Analysis of the anthraquinones aloe-emodin and aloin by gas chromatography/mass spectrometry显示文摘 | ELSOHLY MAHMOUD A GUL WASEEM MURPHY TIMOTHY P | 2004 | International Immunopharmacology2004，4，14： | 1 |
| 20 | Keloids and hypertrophic scars : are they two dif- ferent sides of the same coin? 显示文摘 | Kose O Waseem A | 2008 | Dermatol Surg2008，34，3： | 1 |
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