|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 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 | Clinical evaluation of xylazine with barbiturate and non - barbitturate anesthesia in dogs显示文摘 | Pathak J C Pandey S S Sukla B P | 1998 | Indian Veterinary Journal1998，75，10： | 2 |
| 3 | Influence of source and time of potassium application on potato growth, yield, economics and crisp quality 显示文摘 | Kumar P Pandey S K Singh B P | 2007 | Potato Research2007，50，： | 1 |
| 4 | The novel triterpenoid CDDO induces apoptosis and differentiation of human osteosarco- ma cells by a caspase-8 dependent mechanism显示文摘 | ITO Y PANDEY P SPORN M B | 2001 | Mol Pharma- col2001，59，5： | 1 |
| 5 | Dynamic model of worms with vertical transmission in computer network显示文摘 | MIISHRA B K PANDEY S K | 2011 | Applied Mathematics and Computation2011，217，21： | 1 |
| 6 | Berberine modifies cysteine 179 of IkappaBalpha kinase, suppresses nuclear factor-kappaB-regulated amtiapoptotic gene products, and potentiates apoptosis显示文摘 | Pandey MK Sung B Kunnumakkara AB | 2008 | Cancer Res2008，68，13： | 1 |
| 7 | A comparative evaluation of newer sedatives in conscious sedation显示文摘 | Koirala B Pandey RK Saksen AK | 2006 | J Clin Pediatr Dent2006，30，4： | 1 |
| 8 | Electron microscopic examination of Aedes albopictus clone C6/36 cells infected with dengue virus 2 at elevated incubation temperature显示文摘 | Pandey B Ichinose A Igarashi A | 1998 | Acta Virol1998，42，： | 1 |
| 9 | Effect of citric acid on the hydration of plaster of Paris显示文摘 | SINGH N B PANDEY S P | 1990 | Gypsum & Lime1990，，224： | 1 |
| 10 | Effect of thickness and precracking on the fracture toughness of particle-reinforced Al-alloy composites 显示文摘 | Pandey A B Majumdar B S Miracle D B | 1998 | Metallurgical and Materials Transactions1998，29，4： | 1 |
| 11 | Identification of critical erosion prone areas in the small agricultural watershed using USLE, GIS and remote sensing 显示文摘 | A PANDEY V M CHOWDARY B C MAL | 2007 | Water Resources Management2007，21，4： | 1 |
| 12 | Decomposition of fine roots of Pinus kesiya and turnover of organic matter,N and P of coarse and fine pine roots and herbaceous roots and rhizomes in subtropical pine forests stands of different ages 显示文摘 | John B Pandey H N Tripathi R S | 2002 | Biology and Fertility of Soils2002，35，4： | 1 |
| 13 | General regression neural network and radial basis neural network for the estimation of crop variables of lady finger显示文摘 | Pandey A Thapa K B Prasad R | 2012 | J of the Indian Society of Remote Sensing2012，40，4： | 1 |
| 14 | Identificationof a flavivirus isolated from mosquitos in Chiang Mai Thailand显示文摘 | PANDEY B D KARABATSOS N CROPP B | 1999 | Southeast Asian J Trop Med Public Health1999，30，1： | 1 |
| 15 | Influence of Magnesia on Sintering Characteristics of Iron Ore显示文摘 | Yadav U S Pandey B D | 2002 | Ironmaking and Steelmaking2002，29，2： | 1 |
| 16 | Runoffand sediment yield modeling from a small agriculturalwatershed in India using the WEPP model显示文摘 | PANDEY A CHOWDARY V M MAL B C | 2008 | Journal ofHydrology2008，348，34： | 1 |
| 17 | Ultrasonication for breaking water-in-oilemulsions显示文摘 | SINGH B P PANDEY B P | 1992 | Proc Indian Natl Sci Acad Part A1992，58，3： | 1 |
| 18 | Carcinoma of the gallbladder: role of sonography in diagnosis of staging显示文摘 | PANDEY M SOOD B P SHUKLA R C | 2000 | J Clin Ultrasound2000，28，5： | 1 |
| 19 | Damage detection form changes in curvature mode shpes 显示文摘 | PANDEY M B SAMMAN M M | 1991 | Journal of Sound and Vibration1991，145，2： | 1 |
| 20 | Influence of magnesia on sintering characteristics of iron ore 显示文摘 | Yadav U S Pandey B D | 2002 | lronmaking and Steelmaking2002，29，2： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员