| 基于RRM模型的华池县土地整治规划生态风险评价 |
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| 引用本文： | 王同伟,胡云龙,鲁晋,程文仕,刘金荣.基于RRM模型的华池县土地整治规划生态风险评价[J].安徽农业科学,2018,46(10):5-9,13. |
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| 作者姓名： | 王同伟 胡云龙 鲁晋 程文仕 刘金荣 |
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| 作者单位： | 草地农业生态系统国家重点实验室,农业部草牧业创新重点实验室,兰州大学草地农业科技学院,甘肃兰州730020;甘肃农业大学管理学院,甘肃兰州,730070 |
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| 摘 要： | 以庆阳市华池县土地整治规划(2010—2020年)为研究对象,通过收集相关数据和实地勘测,运用相对风险模型,对华池县土地整治规划的生态风险进行定量测算。结果表明:高风险区主要为地形破碎、生态脆弱的丘陵沟壑区(元城、五蛟和城壕),较高风险区主要在北部丘陵沟壑区,中风险区为西南部残塬沟壑区以及子午岭丘陵沟壑区,低风险区主要位于子午岭边缘地带;所划分的4个风险小区的6类生境中,采矿用地风险值最高,其次为农村居民点用地和耕地;就生态受体而言,土壤的相对风险值最高,水环境次之,且地形越复杂则表现得越明显。从中期评估角度进行生态风险评价,以期对华池县土地整治工作有所借鉴。
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| 关 键 词： | 土地整治 生态风险评价 相对风险模型 风险管理 华池县 |
Ecological Risk Assessment in Land Reclamation Plan of Huachi County Based on Relative Risk Model |
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| Abstract: | The land remediation plan of Huachi County in Qingyang City (2010-2020) was taken as the research object,and the relative risk model is used to quantitatively estimate the ecological risk of land remediation planning by collecting related data and field surveys.The results showed that:The high-risk areas are mainly hilly and gully areas (Yuancheng,Wujiao and Chenghao) with fragile topography and fragile landscapes.The higher-risk areas are mainly in the northern hilly and gully areas while the middle-risk areas are the gully areas in the southwest and the hilly and gully areas in Ziwuling Mountain,low-risk areas are mainly located in the edge of the Ziwuling Mountain;Among the six habitats classified in the four risk areas,the mining land has the highest risk value,followed by the rural residential land use and cultivated land;In the case of ecological receptors,the relative risk value of soil was the highest,followed by the water environment,and the more complex the terrain,the risk was more obvious.In the mid-term evaluation respect of ecological risk assessment,with a expectation to land reclamation work in Huachi County Lessons. |
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