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4 生态环境恶化危险度评价指标 |
| Table 4 Assessment indices of environment deterioration |
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| 影响因素 | 等级 | 分值 | 范围 | 化肥投入
强度 | 1 | 1 | < 1500.0 kg/hm2 | | 2 | 2 | 1500.0 ~2250.0 kg/hm2 | | 3 | 3 | > 2250.0 kg/hm2 | 农药投入
强度 | 1 | 1 | < 3.0 kg/hm2 | | 2 | 2 | 3.0~7.5 kg/ hm2 | | 3 | 3 | > 7.5 kg/ hm2 | COD
排放量 | 1 | 1 | < 2000.0 t | | 2 | 2 | 2000.0~4000.0 t | | 3 | 3 | > 4000.0 t | 二氧化硫
排放量 | 1 | 1 | < 1000.0 t | | 2 | 2 | 1000.0 ~2000.0 t | | 3 | 3 | > 2000.0 t | | 固体废弃物排放量 | 1 | 1 | < 20000.0 t | | 2 | 2 | 20000.0 ~40000.0 t | | 3 | 3 | > 40000.0 t |
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