Peng Li
Chinese Academy of Sciences
5 Papers
5 Citations
Peng Li is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: Climate change & China. The author has an hindex of 2, co-authored 2 publications.
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Papers
Differentiation characteristics of karst vegetation resilience and its response to climate and ecological restoration projects
Chen Tiantian,Wang Qiang,Wang Yuxi,Peng Li +3 more
- 16 Jul 2023
Abstract: In light of the recent pressure from global warming, extreme drought events, and deleterious human activity, the strength and long‐term change trends of vegetation in karst regions—in terms of their resistance to external disturbances—have not been studied systematically. Therefore, herein, we quantified the vegetation resilience and its nonlinear change trends in south China karst under different environmental gradients by measuring the lag‐1 autocorrelation to time‐series Normalized Difference Vegetation Index (1990–2018), clarifying the driving forces of vegetation resilience changes. It was shown that the vegetation resilience change in south China karst was not monotonous. In the first stage (pre‐2002), precipitation and warming promoted the increase of regional vegetation resilience (slope = −0.045, p < 0.0001). In the second stage (during 2002–2010), the increasing trend of vegetation resilience was not obvious and vegetation resilience was difficult to keep up with vegetation productivity, indicating the time‐lagged effect of ecological restoration projects to vegetation resilience. In the third stage (post‐2010), due to the continuous advancement of ecological restoration projects, vegetation resilience increased significantly and had the largest amplitude (slope = −0.128, p < 0.0001). Simultaneously, under different environmental gradients, vegetation resilience showed significant differentiation characteristics. In comparison to non‐karst regions, increases in the vegetation resilience were more obvious in karst regions especially in the post‐2010. With increases in the soil depth, the vegetation resilience exhibited an increasing trend, indicating its dependence on soil. At slopes >25°, the vegetation resilience increased most obviously and the resilience of meadows was the largest, which can be the preferred vegetation type for ecological restoration projects. This research provides another perspective to understand karst vegetation ecosystem and the results will facilitate the protection of karst ecosystems.
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Global Vegetation‐Temperature Sensitivity and Its Driving Forces in the 21st Century
Wang Yuxi,Peng Li,Yuemin Yue,Tiantian Chen +3 more
TL;DR: Global vegetation-temperature sensitivity and its driving forces in the 21st century show significant changes under different CO2 emission scenarios and vegetation types. The area proportion with the global temperature increases >2°C under different scenarios increases with time. The largest contribution to the global terrestrial gross primary productivity growth is at low latitudes. There is an inverted U‐shaped relationship between precipitation and Svpt. Socio‐demographic pressures in places like Central Africa and East Africa will offset the promotion of vegetation growth by warming.
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Decoupling and partitioning the effect of climate and afforestation on long‐term vegetation greening in China since the 1990s
TL;DR: In this article , an ensemble empirical mode decomposition, the breaks for additive seasonal and trend algorithm and trend analysis were applied to obtain the spatiotemporal characteristics of the long-term interannual normalized difference vegetation index in China.
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Spatio-temporal pattern of net primary productivity in Hengduan Mountains area, China: impacts of climate change and human activities
TL;DR: In this paper, the authors used the Carnegie-Ames-Stanford Approach (CASA) model to estimate the NPP of plant communities in Hengduan Mountains area of China, and explore the relationship between NPP and altitude in this region.