干旱区生态环境知识资源中心(Arid): Spatial and temporal evolutions of vegetation coverage in the Tarim River Basin and their responses to phenology

Arid

DOI	10.1016/j.catena.2022.106489
	Spatial and temporal evolutions of vegetation coverage in the Tarim River Basin and their responses to phenology
	Jiang, Ning; Zhang, Qinqin; Zhang, SiCong; Zhao, Xiaomeng; Cheng, Hong
通讯作者	Cheng, H
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2022
卷号	217
英文摘要	Vegetation plays an important role in soil erosion, and its coverage as an important parameter appears in almost all soil erosion models, such as USLE (Universal Soil Loss Equation), RWEQ (Revised Wind Erosion Equation) and WEPS (Wind Erosion Prediction System) et al. In the past several decades, scientist have paid attention to photosynthetic vegetation coverage (PVC) based on Normalized Difference Vegetation Index (NDVI). However, in soil wind-eroded region, there is almost no PVC in the nongrowing season and is a large amount of non-photosynthetic vegetation (NPVC) in the growing season. Because the effect of NPVC on soil erosion is the same as that of PVC, vegetation coverage (FVC) in soil erosion field would include PVC and NPVC. Based on field observation, NDVI and meteorological data et al., this paper studied temporal and spatial distribution of vegetation coverage in the Tarim River Basin, and its response to surface temperature (T) and rain (R). The main conclusions are as follows. (1) PVC based on NDVI, would result in an underestimation of FVC in the growing season with about 30%, which led to an overestimation of soil wind erosion with 12%, indicating great errors in the nongrowing season. (2) FVC had obvious region distributions. FVC with 10%similar to 40%, 40%similar to 70%, and >70% were distributed in the mountain of middle elevation and the edge of oasis, the cultivated of the oasis, and the alpine grass of the Kongque River Subbasin, respectively; FVC<10% was widely distributed. With increasing of FVC, its area proportion (y) decreased as an exponential function (y = 73.19e(-0.038FVC)). FVC in the Kongque River, Aksu River, and Weigan-Kuqa River subbasins was better than that in the Hotan River, Keriya River, Cheerchen River, and mainstream Tarim River subbasins. Since the restoration of the ecological environment in the Tarim River Basin in 2000, FVC of 0 similar to 10% decreased, while that of 40%similar to 70% increased, and the other fluctuated. (3) There was a linear relationship (FVC = a(1)T + a(2)R + b, where a(1), a(2), and b were the fitting coefficients) among FVC, T, and R, although the coefficients would change in different subbasins or half-months.
英文关键词	Tarim River Basin Photosynthetic/nonphotosynthetic vegetation Temporal and spatial distribution Surface temperature Rain
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000859993400003
WOS关键词	SPECTRAL MIXTURE ANALYSIS ; WIND EROSION ; NONPHOTOSYNTHETIC VEGETATION ; FRACTIONAL COVER ; PHOTOSYNTHETIC VEGETATION ; INNER-MONGOLIA ; CLIMATE-CHANGE ; CROP RESIDUE ; BARE SOIL ; NDVI
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392113
推荐引用方式 GB/T 7714	Jiang, Ning,Zhang, Qinqin,Zhang, SiCong,et al. Spatial and temporal evolutions of vegetation coverage in the Tarim River Basin and their responses to phenology[J],2022,217.
APA	Jiang, Ning,Zhang, Qinqin,Zhang, SiCong,Zhao, Xiaomeng,&Cheng, Hong.(2022).Spatial and temporal evolutions of vegetation coverage in the Tarim River Basin and their responses to phenology.CATENA,217.
MLA	Jiang, Ning,et al."Spatial and temporal evolutions of vegetation coverage in the Tarim River Basin and their responses to phenology".CATENA 217(2022).