| 基于相对风险模型的土地利用变化生态风险定量评价——以石羊河流域为例 |
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| 引用本文： | 乔蕻强,程文仕,乔伟栋,刘学录.基于相对风险模型的土地利用变化生态风险定量评价——以石羊河流域为例[J].中国沙漠,2017,37(1):198-204. |
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| 作者姓名： | 乔蕻强 程文仕 乔伟栋 刘学录 |
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| 作者单位： | 甘肃农业大学 管理学院, 甘肃 兰州 730070 |
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| 基金项目： | 甘肃省自然科学基金项目（1610RJEA095）；甘肃农业大学盛彤笙科技创新基金项目（GSAU-STS-1632）；甘肃省教育科学“十二五”规划课题（GS[2015]GHB0167）；甘肃农业大学大学生科研训练项目（20151157，20151102） |
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| 摘 要： | 土地利用是否合理是推进国民经济发展的关键，也是生态环境变化的风向标。通过理论研究和实地调研，构建了土地利用生态风险定量评价体系，借助相对风险模型（RRM）对石羊河流域的生态风险及其影响因素进行研究。结果表明：（1）在划分的3个评价单元中，中部绿洲生态保护区在土地利用中面临的生态风险最大，北部盆地防沙治沙区次之，南部山地水源涵养区生态风险最小；（2）在3大风险单元的6类不同风险源中，工程建设对石羊河流域的生态风险影响最大，其次是作物种植和畜牧养殖，且在自然环境相对较好的区域表现得尤为明显。
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| 关 键 词： | 土地利用 生态风险 风险源 RRM 石羊河 |
| 收稿时间： | 2015-07-27 |
| 修稿时间： | 2015-10-16 |
Evaluation of Ecological Risk of Land Use Change Based on the RRM Model:a case in the Shiyanghe River Basin |
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| Qiao Hongqiang,Cheng Wenshi,Qiao Weidong,Liu Xuelu.Evaluation of Ecological Risk of Land Use Change Based on the RRM Model:a case in the Shiyanghe River Basin[J].Journal of Desert Research,2017,37(1):198-204. |
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| Authors: | Qiao Hongqiang Cheng Wenshi Qiao Weidong Liu Xuelu |
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| Institution: | College of Management, Gansu Agricultural University, Lanzhou 730070, China |
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| Abstract: | The rationality of land use is a key to promote the development of the national economy,and is also the signpost of ecological environmental change. Through theoretical study and field research, this paper constructs a quantitative evaluation system for ecological risk of land use, using the RRM to study the ecological risk and its influencing factors in Shiyanghe River Basin. The results showed that, (1) Among three dividing evaluation units, the middle oasis ecological protection faces the largest risk in the land use, followed by the northern basin desertification region and the southern mountain water conservation district is minimum. (2) Among six different risk sources in three risk units, the engineering construction has the greatest impact on the ecological risk in the Shiyanghe River Basin, followed by the crop cultivation and animal husbandry, and it is particularly obvious in relatively good natural environment area. |
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| Keywords: | land use ecological risk risk source RRM Shiyanghe River Basin |
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