水土保持研究2025，Vol.32Issue(4)：138-146,9.DOI:10.13869/j.cnki.rswc.2025.04.002
中国植被覆盖对极端气候的响应
Responses of vegetation cover to extreme climate in China
摘要
Abstract
[Objective]The aims of this study are to explore the response of vegetation cover to extreme climate in China,analyze the time-lag and cumulative effects of extreme climate on vegetation changes,and provide a scientific basis for formulating sustainable vegetation restoration strategies.[Methods]Based on high-resolution ERA5 data and GIMMS-3g NDVI data,this study used trend analysis,correlation analysis,and other methods to investigate the temporal and spatial variation characteristics of fractional vegetation cover(FVC)and extreme climate indices(ECI)in China from 1982 to 2022.The response of FVC changes to extreme climate in China under time-lag and cumulative effects was identified.[Results](1)The spatial distribution of FVC in China was higher in the east and lower in the west,and high in the south and low in the north,with a significant increase at the rate of 0.03/10 a,and the area with significant increase accounted for 38.32%(p<0.05).(2)The change of ECI varied in different climate zones.Extreme temperatures(TNn,TXx)in the Mid-latitude Temperate Semi-arid Region(MT)and the Warm Temperate Semi-humid Region(WT)showed a highly significant increasing trend over time(p<0.01).The Extreme Precipitation Indices(CDD,CWD,Rx1day,Rx5day,R90P)in the Edge Tropical Humid Region(ET)and the North Subtropical Humid Region(NT)showed a significant decreasing trend over time(p<0.05),while in the Plateau Temperate Semi-arid Region(PT),a significant increasing trend was observed(p<0.05).(3)The cumulative effect of extreme climate on FVC was stronger than the time-lag effect,primarily with a lag of 0～1 month and an accumulation of 1 month.[Conclusion]The response of vegetation to extreme climate is mainly characterized by cumulative effect,with short-term time-lag effect and significant regional differences.关键词
气候变化/极端气候/植被覆盖/时滞效应/累积效应Key words
climate change/extreme climate/vegetation cover/time-lag effect/cumulative effect分类
天文与地球科学引用本文复制引用
杨书鉴,牛健植,苗禹博,王迪,杨涛,赵春光,毛振华,郭跃..中国植被覆盖对极端气候的响应[J].水土保持研究,2025,32(4):138-146,9.基金项目
国家重点研发计划"黄河中游多沙粗沙区风水复合侵蚀协同治理技术与示范"(2022YFF1300804) （2022YFF1300804）
