基于GIS的关中地区农业生产自然灾害风险综合评价研究
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周寅康, 金晓斌, 王千, 杜心栋
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Comprehensive Assessment of Natural Disaster Risk for Agricultural Production in Guanzhong Region Based on GIS
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Yin-kang ZHOU, Xiao-bin JIN, Qian WANG, Xin-dong DU
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| 表2 地质灾害危险度评价指标 |
| Table 2 Assessment indices of geological disaster |
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| 影响因素 | 等级 | 分值 | 范围/类型 | | 地貌类型 | 1 | 1.0 | 河流阶地 | | 2 | 1.2 | 洪积扇 | | 3 | 1.5 | 丘陵 | | 4 | 1.7 | 苔塬 | | 5 | 2.0 | 梁峁 | | 坡度 | 1 | 1.0 | < 5.0° | | 2 | 1.2 | 5.1° ~10.0° | | 3 | 1.5 | 10.1° ~15.0° | | 4 | 1.7 | 15.1° ~20.0° | | 5 | 2 | > 20.0° | | 地质条件 | 1 | 1.0 | 硬质岩石 | | 2 | 1.2 | 软质岩石 | | 3 | 1.5 | 砂/粉类土 | | 4 | 1.7 | 粘类土 | | 5 | 2 | 黄土 | | 距地质隐患点距离 | 1 | 1.0 | > 3000 m | | 2 | 1.5 | 1000 ~3000 m | | 3 | 2.0 | < 1000 m | | 降水量 | 1 | 1.0 | < 500 mm | | 2 | 1.5 | 500 ~600 mm | | 3 | 2.0 | > 600 mm |
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