干旱区生态环境知识资源中心(Arid): Climatic Constraints to Monthly Vegetation Dynamics in Desert Areas Over the Silk Road Economic Belt

Arid

DOI	10.3390/rs13050995
	Climatic Constraints to Monthly Vegetation Dynamics in Desert Areas Over the Silk Road Economic Belt
	Ma, Yu-Jun; Shi, Fang-Zhong; Hu, Xia; Li, Xiao-Yan
通讯作者	Ma, YJ (corresponding author), Sun Yat Sen Univ, Sch Geog & Planning, Guangzhou 510275, Peoples R China. ; Ma, YJ (corresponding author), Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China. ; Ma, YJ (corresponding author), Beijing Normal Univ, Sch Nat Resources, Fac Geog Sci, Beijing 100875, Peoples R China.
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2021
卷号	13 期号:5
英文摘要	The sustainability of vulnerable eco-environment over the Silk Road Economic Belt is under threat of climate change, and the identification of vegetation constraints by sub-optimum climatic conditions is critically essential to maintain existing dryland ecosystems. To better understand how the vegetation varies at monthly scale and its effect by climate conditions in different desert areas, this study first investigated the seasonal variation of the normalized difference vegetation index (NDVI). Then, we analyzed the time effects of diverse climatic factors (air temperature, solar radiation, precipitation) on NDVI and estimated the limitation of NDVI by these climatic factors in different desert areas. The result showed that the mean monthly NDVI during 1982-2015 showed a unimodal variation in most desert areas, with high values in late spring and summer over cold arid areas, in early spring or early autumn over hot arid areas, and in summer over polar areas, respectively. Solar radiation and precipitation in cold arid areas presented 1-2 month lag or accumulation effect on NDVI, while precipitation in most hot arid areas showed no remarkable time-lag but 3 month accumulation effect, and all three climate factors in polar areas exhibited 1-3 month accumulation effect. The explanatory power of climatic conditions for vegetation dynamics considering time effects increased by 3.4, 10.8, and 5.9% for the cold arid areas, hot arid areas, and polar areas (i.e., relative increase of 4.1, 25.4, and 8.2%), respectively. The main climatic constraints to vegetation dynamics were the water condition in hot arid areas (>78%) and the temperature condition in polar areas (>67%), while cold arid areas were simultaneously limited by the water and temperature conditions (>76% in total). These results provide a detailed understanding of vegetation variation and ecological projection, which are very important to implement adaption measures for dryland ecosystems over the Silk Road Economic Belt.
英文关键词	NDVI air temperature solar radiation precipitation desert area
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000628504000001
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351488
作者单位	[Ma, Yu-Jun] Sun Yat Sen Univ, Sch Geog & Planning, Guangzhou 510275, Peoples R China; [Ma, Yu-Jun; Hu, Xia; Li, Xiao-Yan] Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; [Ma, Yu-Jun; Shi, Fang-Zhong; Hu, Xia; Li, Xiao-Yan] Beijing Normal Univ, Sch Nat Resources, Fac Geog Sci, Beijing 100875, Peoples R China; [Li, Xiao-Yan] Qinghai Normal Univ, Key Lab Tibetan Plateau Land Surface Proc & Ecol, Xining 810016, Peoples R China
推荐引用方式 GB/T 7714	Ma, Yu-Jun,Shi, Fang-Zhong,Hu, Xia,et al. Climatic Constraints to Monthly Vegetation Dynamics in Desert Areas Over the Silk Road Economic Belt[J]. 北京师范大学,2021,13(5).
APA	Ma, Yu-Jun,Shi, Fang-Zhong,Hu, Xia,&Li, Xiao-Yan.(2021).Climatic Constraints to Monthly Vegetation Dynamics in Desert Areas Over the Silk Road Economic Belt.REMOTE SENSING,13(5).
MLA	Ma, Yu-Jun,et al."Climatic Constraints to Monthly Vegetation Dynamics in Desert Areas Over the Silk Road Economic Belt".REMOTE SENSING 13.5(2021).