| 渭河下游洪泛区水土流失影响因素分析与风险评价 |
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| 引用本文： | 李景宜. 渭河下游洪泛区水土流失影响因素分析与风险评价[J]. 干旱区资源与环境, 2011, 0(11): 44-48 |
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| 作者姓名： | 李景宜 |
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| 作者单位： | 陕西省灾害监测与机理模拟重点实验室宝鸡文理学院地理科学与环境工程系; |
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| 基金项目： | 教育部新世纪优秀人才支持计划(NCET-09-0874); 陕西省自然科学基金(2011JM5010); 陕西省重点实验室基金(2010JS073); 陕西省教育厅自然科学基金(11JK0749)资助 |
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| 摘 要： | 水旱灾害频发、水土流失治理进展缓慢等生态环境问题,致使渭河下游洪泛区生态风险不断增高,严重制约了社会经济的可持续发展。通过植被和坡度信息的不同组合来评价区域的土壤侵蚀风险程度,并将其组合值在进行归一化处理后作为水土流失风险的度量指标,结果表明：高风险区主要位于华阴和潼关县渭河干流及其南山支流河道附近,较高风险区主要位于...
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| 关 键 词： | 渭河下游 水土流失 植被 坡度 生态风险评价 |
Risk assessment & rason analysis for water loss and soil erosion along the lower reaches of river Weihe |
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| LI Jingyi. Risk assessment & rason analysis for water loss and soil erosion along the lower reaches of river Weihe[J]. Journal of Arid Land Resources and Environment, 2011, 0(11): 44-48 |
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| Authors: | LI Jingyi |
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| Affiliation: | LI Jingyi(Key Laboratory of Disaster Survey & Mechanism Simulation of Shaanxi Province,Baoji 721013,P.R.China) |
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| Abstract: | Ecological risk have heightened increasingly in lower reaches of river Weihe because of the frequent floods and drought and the sluggish soil and water loss control.Based on the diversity compound mode of vegetation coverage and slope and its normalization processing,risk of soil erosion was evaluated.The results showed that the highest risk zones are mainly located in the main-stem and tributaries from Qinling Mountain in Huanyin and Tongguan.The higher risk zones are located in the south bank of main-stem... |
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| Keywords: | lower reaches of river Weihe vegetation coverage slope water loss and soil erosion ecological risk assessment |
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