Relationship between multi-scale climate factors and performance of ecological engineering on the Loess Plateau, China  

作　　者：Panxing He Jun Ma Zhiming Han Mingjie Shi Dongxiang Xu Zongjiu Sun 

机构地区：[1]Ministry of Education Key Laboratory for Biodiversity,Science and Ecological Engineering,National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary,School of Life Sciences,Fudan University,Shanghai,200438,People’s Republic of China [2]Ministry of Education Key Laboratory for Western Arid Region Grassland Resources and Ecology,College of Grassland and Environment Sciences,Xinjiang Agricultural University,Urumqi,830052,People’s Republic of China [3]State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Areas,Xi’an University of Technology,Xi’an,710077,People’s Republic of China [4]School of Earth and Environmental Sciences,University of Queensland,St Lucia,4072,Australia

出　　处：《Journal of Forestry Research》2022年第3期789-800,共12页林业研究（英文版）

基　　金：The work was supported by the Natural Science Foundation of China(41601181);the Scientifi c Research Program of Shanghai Science and Technology Commission(20DZ1204702).

摘　　要：The long-term “Grain-to-Green Program” (GGP) on China’s Loess Plateau is a major global ecological engineering project which has significantly boosted vegetation renewal. Some studies have found that the rate of restoration is quite rapid during the implementation of ecological engineering, however, the influence of multi-scale climatic conditions on the performance of ecological engineering is unclear. In this study, multiple sources of remote sensing data were used to estimate the dynamics of vegetation structural and functional indicators, water-related local climatic factors, and atmospheric circulation factors. These datasets were also used to detect possible causes for vegetation restoration on the Loess Plateau over the past 20 years. The results show that widespread increases in rates of normalized difference vegetation indexes (NDVI), leaf area indexes (LAI), gross primary production (GPP), and aboveground biomass carbon (ABC) during 2000–2016 were significantly higher than before 2000. GPP was significantly correlated with rainfall and surface runoff on a monthly scale, and there were significant positive correlations between GPP and atmospheric circulation. Our results demonstrate that both vegetation structural and functional indicators rapidly increase, and ecological engineering greatly accelerated vegetation restoration after 2000. Local climatic conditions and atmospheric circulation patterns enhance vegetation growth and impact of ecological engineering.

关 键 词：Vegetation restoration Ecological engineering Water-related climatic factors Atmospheric circulation and sunspot Loess Plateau 

分 类 号：P463[天文地球—大气科学及气象学] X321[环境科学与工程—环境工程]