福建省沙化土地地球化学评价及其方法研究
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王文俊
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Geochemical evaluation and related method of desertified land in Fujian Province,China
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WANG Wen-Jun
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表5 福建省表层土壤Saf和KSi分级方案
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Table 5 Gradation scheme of Saf and KSi of topsoil in Fujian Province
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| Saf值分级方案 | KSi值分级方案 | | Saf值累积频率 | 分值 | KSi值累积频率 | 分值 | | >99.5% | 100 | ≤0.5% | 100 | | 98.5%~99.5% | 95 | 0.5%~1.5% | 95 | | 97%~98.5% | 90 | 1.5%~4% | 90 | | 95%~97% | 85 | 4%~8% | 85 | | 85%~95% | 80 | 8%~15% | 80 | | 75%~85% | 75 | 15%~25% | 75 | | 60%~75% | 70 | 25%~40% | 70 | | 40%~60% | 65 | 40%~60% | 65 | | 25%~40% | 60 | 60%~75% | 60 | | 15%~25% | 55 | 75%~85% | 55 | | 8%~15% | 50 | 85%~95% | 50 | | 4%~8% | 45 | 95%~97% | 45 | | 1.5%~4% | 40 | 97%~98.5% | 40 | | 0.5%~1.5% | 35 | 98.5%~99.5% | 35 | | ≤0.5% | 30 | >99.5% | 30 |
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