globalchange  > 气候变化事实与影响
DOI: 10.5194/hess-21-6485-2017
Scopus记录号: 2-s2.0-85038622985
论文题名:
Spatiotemporal response of the water cycle to land use conversions in a typical hilly-gully basin on the Loess Plateau, China
作者: Qiu L; , Wu Y; , Wang L; , Lei X; , Liao W; , Hui Y; , Meng X
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2017
卷: 21, 期:12
起始页码: 6485
结束页码: 6499
语种: 英语
Scopus关键词: Landforms ; Rain ; Reforestation ; Runoff ; Sediments ; Soil moisture ; Soils ; Water management ; Water resources ; Hydrological effects ; Land use and land cover ; Loess hilly gully region ; Loess plateau of chinas ; Soil and water assessment tool ; Spatiotemporal response ; Sustainable land use ; Waterresource management ; Land use ; agricultural land ; complexity ; evapotranspiration ; grassland ; hydrological cycle ; hydrological response ; land cover ; land use change ; reforestation ; runoff ; soil and water assessment tool ; soil water ; spatiotemporal analysis ; woodland ; China ; Loess Plateau ; Shaanxi ; Yanhe Basin
英文摘要: The hydrological effects of the Grain for Green project (GFGP) on the Loess Plateau have been extensively debated due to the complexity of the water system and its multiple driving factors. The aim of this study was to investigate the response of the hydrological cycle to the GFGP measures based in a case study of the Yanhe Basin, a typical hilly-gully area on the Loess Plateau of China. First, we analyzed the land use and land cover (LULC) changes from 1990 to 2010. Then, we evaluated the effects of LULC changes and sloping land conversion on the main hydrological components in the basin using the Soil and Water Assessment Tool (SWAT). The results indicated that cropland exhibited a decreasing trend, declining from 40.2ĝ€% of the basin area in 1990 to 17.6ĝ€% in 2010, and that the woodland and grassland areas correspondingly increased. With the land use changes from 1990 to 2010, the water yield showed a decreasing trend which was mainly due to decrease in surface runoff. In contrast, evapotranspiration (ET) showed an increasing trend over the same period, resulting in a persistent decrease in soil water. The conversion of sloping cropland to grassland or woodland exerted negative effects on water yield and soil water. Compared with the land use condition in 2010, the negative effects were most evident where cropland with a slopeĝ€ ≥ ĝ€15° was converted to woodland, with decreases in surface runoff and soil water of 17.1 and 6.4ĝ€%, respectively. These results suggest that the expansive reforestation on sloping land in the loess hilly-gully region decreased water yield and increased ET, resulting in reduced soil water. The results of this study can be used to support sustainable land use planning and water resource management on the Loess Plateau in China. © Author(s) 2017.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78957
Appears in Collections:气候变化事实与影响

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作者单位: Department of Earth and Environmental Science, School of Human Settlements and Civil Engineering, Xi'An Jiaotong University, Xi'an, Shaanxi, China; State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing, China; Meteorological Institute of Shaanxi Province, Xi'an, Shaanxi, China

Recommended Citation:
Qiu L,, Wu Y,, Wang L,et al. Spatiotemporal response of the water cycle to land use conversions in a typical hilly-gully basin on the Loess Plateau, China[J]. Hydrology and Earth System Sciences,2017-01-01,21(12)
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