Arid
DOI10.1016/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
ISSN0341-8162
EISSN1872-6887
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).
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