Modeling climate change effects on runoff and soil erosion in southeastern Arizona rangelands and implications for mitigation with conservation practices
文献类型：期刊论文
| 作者 | Zhang, Y.1,2 ; Hernandez, M.1; Anson, E.1; Nearing, M. A.1; Wei, H.1; Stone, J. J.1; Heilman, R.1
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| 刊名 | JOURNAL OF SOIL AND WATER CONSERVATION
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| 出版日期 | 2012-09-01 |
| 卷号 | 67期号:5页码:390-405 |
| 关键词 | climate change General Circulation Model management practices rangelands Rangeland Hydrology and Erosion Model soil erosion |
| ISSN号 | 0022-4561 |
| 通讯作者 | Zhang, Y. |
| 英文摘要 | Climate change is expected to impact runoff and soil erosion on rangelands in the western United States. This study evaluated the potential impacts of precipitation changes on soil erosion and surface runoff in southeastern Arizona using seven General Circulation Model (GCM) models with three. emission scenarios for the 2050s and 2090s. A spatial-temporal downscaling process was used to generate daily precipitation series from GCM outputs for runoff and erosion modeling with the Rangeland Hydrology and Erosion Model (RHEM). Results were compared to 1970 through 1999 conditions. Our results suggested no significant changes in annual precipitation across the region under the three emission scenarios, while projected mean annual runoff and soil loss increased significantly, ranging from 79% to 92% and from 127% to 157%, respectively, relative to 1970 to 1999. At the seasonal scale, though an increase of summer precipitation and a reduction of winter precipitation were projected, both runoff and soil loss increased significantly for both periods.The dramatic increases in runoff and soil loss were attributed to the increase in the frequency and intensity of extreme events in the study area. Predicted soil loss from shrub communities increased more than that predicted for other plant communities under the three emission scenarios. Future increases in runoff and soil erosion may accelerate the transitions of grassland to shrublands or to more eroded states due to the positive vegetation-erosion feedback. Rangeland management policies and practices should consider these changes and adapt to the increased risk of runoff and soil erosion. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Ecology ; Soil Science ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Agriculture ; Water Resources |
| 关键词[WOS] | SOUTHWESTERN NORTH-AMERICA ; UNITED-STATES ; SEMIDESERT GRASSES ; DESERT GRASSLAND ; PRESCRIBED FIRE ; CROP PRODUCTION ; PRECIPITATION ; IMPACTS ; PRODUCTIVITY ; MANAGEMENT |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000314072900012 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/9900]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 作者单位 | 1.ARS, USDA, SW Watershed Res Ctr, Tucson, AZ USA 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Y.,Hernandez, M.,Anson, E.,et al. Modeling climate change effects on runoff and soil erosion in southeastern Arizona rangelands and implications for mitigation with conservation practices[J]. JOURNAL OF SOIL AND WATER CONSERVATION,2012,67(5):390-405. |
| APA | Zhang, Y..,Hernandez, M..,Anson, E..,Nearing, M. A..,Wei, H..,...&Heilman, R..(2012).Modeling climate change effects on runoff and soil erosion in southeastern Arizona rangelands and implications for mitigation with conservation practices.JOURNAL OF SOIL AND WATER CONSERVATION,67(5),390-405. |
| MLA | Zhang, Y.,et al."Modeling climate change effects on runoff and soil erosion in southeastern Arizona rangelands and implications for mitigation with conservation practices".JOURNAL OF SOIL AND WATER CONSERVATION 67.5(2012):390-405. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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