Spatio-temporal heterogeneity and driving mechanism of ecosystem water use efficiency in the Loess Plateau, China
文献类型：期刊论文
| 作者 | Wang, Feiyu3; Xia, Jun1,2; Zou, Lei2; Zhang, Liping1; Li, Xiaoyang2; Yu, Jiarui2 |
| 刊名 | JOURNAL OF HYDROLOGY-REGIONAL STUDIES
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 56页码:102012 |
| 关键词 | Water use efficiency Spatial heterogeneity Driving mechanism NDVI Loess Plateau |
| DOI | 10.1016/j.ejrh.2024.102012 |
| 产权排序 | 2 |
| 英文摘要 | Study region: The Loess Plateau, China Study focus: The trade-off between carbon uptake and water loss, characterized by ecosystem water use efficiency (WUE), deeply influences ecosystem sustainability. In this study, WUE was estimated based on GPP from the Moderate Resolution Imaging Spectroradiometer (MODIS) product and ET simulated by the Priestley Taylor Jet Propulsion Laboratory (PT-JPL) model. The emerging hot spot analysis (EHSA) was used to comprehensively examine the spatio-temporal heterogeneity of WUE. Additionally, the Geodetector model was employed to identify the main drivers of WUE and quantify the interactive effects of drivers on WUE, focusing on different vegetation types. New hydrological insights for the region: Results indicated obvious spatial heterogeneity of WUE under different vegetation and hydro-climatic conditions. Significant increases in WUE occurred in sub-humid cropland and grassland areas that have experienced large-scale ecological restoration and agricultural intensification. By contrast, slight decreases in WUE were observed in semi-arid grassland areas, some of which were accompanied by intensifying cold spots. It was noteworthy that WUE in some hot spots with excessive vegetation coverage also showed a slight downward trend. Further, the WUE pattern in cropland/forests/grassland was dominated by the interaction of vegetation coverage (characterized by the Normalized Difference Vegetation Index, NDVI) and precipitation/air temperature/vapor pressure deficit, with NDVI playing a leading role and hydro-climatic drivers playing a supporting role. |
| WOS关键词 | TERRESTRIAL ECOSYSTEMS ; EVAPORATION ; CLIMATE ; SOIL ; EVAPOTRANSPIRATION ; REVEGETATION ; FLUXES |
| WOS研究方向 | Water Resources |
| WOS记录号 | WOS:001338813900001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/208184]  |
| 专题 | 陆地水循环及地表过程院重点实验室_外文论文 |
| 通讯作者 | Zou, Lei |
| 作者单位 | 1.Wuhan Univ, State Key Lab Water Resources Engn & Management, Wuhan 430000, Peoples R China 2.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.North China Elect Power Univ, Sch Water Resources & Hydropower Engn, Beijing 102206, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Feiyu,Xia, Jun,Zou, Lei,et al. Spatio-temporal heterogeneity and driving mechanism of ecosystem water use efficiency in the Loess Plateau, China[J]. JOURNAL OF HYDROLOGY-REGIONAL STUDIES,2024,56:102012. |
| APA | Wang, Feiyu,Xia, Jun,Zou, Lei,Zhang, Liping,Li, Xiaoyang,&Yu, Jiarui.(2024).Spatio-temporal heterogeneity and driving mechanism of ecosystem water use efficiency in the Loess Plateau, China.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,56,102012. |
| MLA | Wang, Feiyu,et al."Spatio-temporal heterogeneity and driving mechanism of ecosystem water use efficiency in the Loess Plateau, China".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 56(2024):102012. |
入库方式： OAI收割
来源：地理科学与资源研究所
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