Exploring the Dynamic Impact of Extreme Climate Events on Vegetation Productivity under Climate Change

被引：3
作者：
Xu, Hanqing [1 ,2 ]
Tan, Jinkai [3 ]
Li, Chunlan [4 ]
Niu, Yiying [1 ]
Wang, Jun [1 ]
机构：
[1] East China Normal Univ, Inst Eco Chongming IEC, Key Lab Geog Informat Sci, Sch Geog Sci,Minist Educ, Shanghai 200241, Peoples R China
[2] Delft Univ Technol, Fac Civil Engn & Geosci, Dept Hydraul Engn, Stevinweg 1, NL-2628CN Delft, Netherlands
[3] Sun Yat Sen Univ, Sch Atmospher Sci, Key Lab Trop Atmosphere Ocean Syst, Minist Educ, Zhuhai 519082, Peoples R China
[4] East China Normal Univ, Sch Urban & Reg Sci, Shanghai 200241, Peoples R China
来源：
FORESTS | 2023年 / 14卷 / 04期
基金：
中国国家自然科学基金;
关键词：
extreme climate index; diurnal temperature variation; normalized difference vegetation index; copula theory; joint probability; DROUGHT; PLATEAU; DAYTIME;
D O I：
10.3390/f14040744
中图分类号：
S7 [林业];
学科分类号：
0829 ; 0907 ;
摘要：
As global warming continues to intensify, the relationship between diurnal temperature range (DTR) and vegetation productivity continues to change over time. However, the impact of DTR changes on vegetation activities remains uncertain. Thus, further study about how DTR changes affect the physiological activities of plants is also urgently needed. In this study, we employed copula function theory to analyze the impact of DTR on Normalized Difference Vegetation Index (NDVI) values during the spring, summer, and autumn seasons from 1982 to 2014 for various land types in the Inner Mongolia Plain (IMP), China. The results showed that the relationship between DTR and NDVI in the IMP was characterized by correlation at the upper tail and asymptotical independence at the lower tail. This demonstrated that the DTR had little effect on NDVI when they reached their minimum value. However, it has a significant impact on NDVI at its maximum values. This study provides valuable insight into the dynamic impact of monthly DTR on different land use types under climate change.
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收藏
页数：12
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