黑龙江省乌裕尔河流域土壤中某些微量元素地球化学特征
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张哲寰, 戴慧敏, 宋运红, 杨佳佳
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Geochemical characteristics of some soil trace elements in the Wuyuer River Basin, Heilongjiang Province
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ZHANG Zhe-Huan, DAI Hui-Min, SONG Yun-Hong, YANG Jia-Jia
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表7 微量元素全量和有效态等级划分标准
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Table 7 classification criteria for total and effective levels of trace elements
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| 等级 | 含义 | B | Cu | Fe | Mn | Mo | Zn | | 全量 | 一等 | 丰富 | >65 | >29 | >5.3 | >700 | >0.85 | >84 | | 二等 | 较丰富 | >55~65 | >24~29 | >4.60~5.30 | >600~700 | >0.65~0.85 | >71~84 | | 三等 | 中等 | >45~55 | >21~24 | >4.15~4.60 | >500~600 | >0.55~0.65 | >62~71 | | 四等 | 较缺乏 | >30~45 | >16~21 | >3.40~4.15 | >375~500 | >0.45~0.55 | >50~62 | | 五等 | 缺乏 | ≤30 | ≤16 | ≤3.40 | ≤375 | ≤0.45 | ≤50 | | 上限值 | | ≥3000 | ≥50 | | ≥1500 | ≥4 | ≥200 | | 有效态 | 一等 | 丰富 | >2 | >1.8 | >20 | >30 | >0.3 | >3 | | 二等 | 较丰富 | >1~2 | >1.0~1.8 | >10~20 | >15~30 | >0.2~0.3 | >1~3 | | 三等 | 中等 | >0.5~1.0 | >0.2~1.0 | >4.5~10 | >5~15 | >0.15~0.2 | >0.5~1.0 | | 四等 | 较缺乏 | >0.2~0.5 | >0.1~0.2 | >2.5~4.5 | >1~5 | >0.1~0.15 | >0.3~0.5 | | 五等 | 缺乏 | ≤0.2 | ≤0.1 | ≤2.5 | ≤1 | ≤0.1 | ≤0.3 |
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