干旱区生态环境知识资源中心(Arid): 中国区域植被对降水异常的时空响应特征

Arid

	中国区域植被对降水异常的时空响应特征
其他题名	Change in Vegetation in Response to Precipitation Variation Across China
	陈泽峰; 王卫光; 傅健宇
来源期刊	灌溉排水学报
ISSN	1672-3317
出版年	2019
卷号	38 期号:5 页码:84-90
中文摘要	【目的】分析中国植被生长对降水异常的响应方式及其强度.【方法】基于1982―2015年GIMMS-NDVI和高分辨率栅格气候数据,采用二阶偏相关和时滞相关分析方法,研究了中国区域植被生长对降水异常响应的时空模式.【结果】①中国生长期植被NDVI呈显著的上升趋势,上升幅度为0.000 7/a,而降水年际间波动较大,整体趋势并不显著;②NDVI与降水异常的偏相关系数呈现显著的空间差异性,内蒙古中东部植被生长受降水异常的影响最为显著;③总体而言,植被生长对前1个月降水异常的响应最强烈,并且与超过3个月累积的降水异常相关性最强,而受同期降水异常的影响并不明显.【结论】降水变化对半干旱区植被生长活动影响最大;同时,不同植被类型的地区,植被对降水异常的响应模式存在显著差异,相比于灌木和草地,森林受降水异常的影响更小,且响应更迟缓.
英文摘要	【Objective】The objective of this paper is to analyze the spatiotemporal response of vegetation to precipitation variation in China.【Method】The analysis was based on GIMMS-NDVI dataset and high-resolution gridded climate dataset from 1982 to 2015, using second-order partial correlation and lag-correlation method. 【Result】From 19822015, the mean NDVI over plant growing season showed a significant increase, at annual rate of 0.000 7. While there was an inter-annual variation in precipitation, there was no a significant trend. The partial correlation coefficient between NDVI and precipitation varied spatially, with vegetation dynamic in Inner Mongolia correlated strongly with precipitation fluctuation. Generally, vegetation growth was impacted strongly by precipitation in previous month as well as the accumulated precipitation over previous three months, but was only slightly correlated to precipitation in the same month.【Conclusion】Vegetation variation in semi-arid region was impacted by precipitation variation more significantly than in other regions. Different vegetation types responded differently to precipitation variation, and compared to shrubland and grassland, the growth of forest was least influenced by precipitation variation and there was a delay in its response to precipitation change.
中文关键词	植被生长 ; 降水 ; 时滞相关 ; 气候变化
英文关键词	NDVI NDVI vegetation growth precipitation lag-correlation climate change
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6511024
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239235
作者单位	河海大学, 水文水资源与水利工程科学国家重点实验室, 南京, 江苏 210098, 中国
推荐引用方式 GB/T 7714	陈泽峰,王卫光,傅健宇. 中国区域植被对降水异常的时空响应特征[J],2019,38(5):84-90.
APA	陈泽峰,王卫光,&傅健宇.(2019).中国区域植被对降水异常的时空响应特征.灌溉排水学报,38(5),84-90.
MLA	陈泽峰,et al."中国区域植被对降水异常的时空响应特征".灌溉排水学报 38.5(2019):84-90.