干旱区生态环境知识资源中心(Arid): Variation of vegetation fractional coverage and its relationship with climate in a desert steppe: optimization of farmland layout in a farming-pastoral ecotone using the ecological suitability index

Arid

DOI	10.1016/j.ecoleng.2020.105834
	Variation of vegetation fractional coverage and its relationship with climate in a desert steppe: optimization of farmland layout in a farming-pastoral ecotone using the ecological suitability index
	Song, Yifan 1,2; Lu, Yajing 3; Liu, Tiejun 1; Li, Heping 1; Yue, Zhengwen 1; Liu, Huiwen 4; Gao, Tianming 1
通讯作者	Lu, Yajing
来源期刊	ECOLOGICAL ENGINEERING
ISSN	0925-8574
EISSN	1872-6992
出版年	2020
卷号	150
英文摘要	Grassland ecosystems play an important role in maintaining biodiversity, global carbon balance. Aiming at the desert steppe with an extremely fragile ecological environment, the spatiotemporal relation between vegetation fractional coverage (VFC) and climate was explored in this study in a pixel-scale analysis method. There was an overall increasing trend in the VFC of the study area. The coefficient of correlation between average precipitation from 2000 to 2013 and VFC was 0.81, and during the growing season, the coefficient of correlation between average temperature and VFC was -0.76. The two dominant factors of VFC in the study area, precipitation and temperature, were used as indicators to establish an ecological suitability index (ESI) for desert steppe to reflect the hydrothermal conditions for vegetation growth. The ESI of the study area varied from 0.03 to 0.94 with its average being 0.39, and the coefficient of correlation between ESI and VFC was 0.84. On the basis of ESI, an optimized layout adjustment was made for existing farmland in the study area so as to take advantage of natural conditions to the greatest extent and reduce impacts of human activities. The optimized layout of farmlands would adapt better to the natural climatic characteristics of the desert steppe regions, meanwhile, bring about ecological and environment benefits to the original agro-pastoral ecotone of the desert grasslands areas. Results from this study further our understanding of the desert steppe, and provide some reference for ecological restoration and new cycle of returning farmland to grassland policy.
英文关键词	Vegetation fractional coverage Desert steppe Ecological suitability Precipitation Optimization Farmland layout Farming-pastoral ecotone
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000529350200001
WOS关键词	MULTISATELLITE PRECIPITATION ANALYSIS ; WATER-USE EFFICIENCY ; SURFACE-TEMPERATURE ; SOIL PROPERTIES ; TIME-SERIES ; LAND ; PLANT ; NDVI ; VARIABILITY ; COMMUNITY
WOS类目	Ecology ; Engineering, Environmental ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319042
作者单位	1.China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100044, Peoples R China; 2.Yellow River Engn Consulting Co Ltd, Postdoctoral Program, Zhengzhou 450003, Peoples R China; 3.Beijing Water Sci & Technol Inst, Beijing 100048, Peoples R China; 4.Power China Beijing Engn Corp Ltd, Beijing 100024, Peoples R China
推荐引用方式 GB/T 7714	Song, Yifan,Lu, Yajing,Liu, Tiejun,et al. Variation of vegetation fractional coverage and its relationship with climate in a desert steppe: optimization of farmland layout in a farming-pastoral ecotone using the ecological suitability index[J],2020,150.
APA	Song, Yifan.,Lu, Yajing.,Liu, Tiejun.,Li, Heping.,Yue, Zhengwen.,...&Gao, Tianming.(2020).Variation of vegetation fractional coverage and its relationship with climate in a desert steppe: optimization of farmland layout in a farming-pastoral ecotone using the ecological suitability index.ECOLOGICAL ENGINEERING,150.
MLA	Song, Yifan,et al."Variation of vegetation fractional coverage and its relationship with climate in a desert steppe: optimization of farmland layout in a farming-pastoral ecotone using the ecological suitability index".ECOLOGICAL ENGINEERING 150(2020).