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1 干旱灾害危险度评价指标 |
| Table 1 Assessment indices of drought hazard degree |
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| 评价指标 | 等级 | 分值 | 范围 | | 春旱频率 | 1 | 1.0 | < 10.0% | | 2 | 1.2 | 10.1% ~ 20.0% | | 3 | 1.5 | 20.1% ~30.0% | | 4 | 1.7 | 30.1% ~40.0% | | 5 | 2.0 | > 40.0% | | 夏旱频率 | 1 | 1.0 | < 10.0% | | 2 | 1.2 | 10.1% ~20.0% | | 3 | 1.5 | 20.1% ~30.0% | | 4 | 1.7 | 30.1% ~40.0% | | 5 | 2.0 | > 40.0% | | 秋旱频率 | 1 | 1.0 | < 10.0% | | 2 | 1.2 | 10.1% ~20.0% | | 3 | 1.5 | 20.1% ~30.0% | | 4 | 1.7 | 30.1% ~40.0% | | 5 | 2.0 | > 40.0% | | 地表湿润指数 | 1 | 1.0 | > 1.30 | | 2 | 1.2 | 1.11~1.30 | | 3 | 1.5 | 0.91~1.10 | | 4 | 1.7 | 0.71~0.90 | | 5 | 2.0 | < 0.70 |
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