流域盆地化学风化强度空间分布及控制因素研究:以长江和珠江为例
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常海钦, 付亚龙, 林鑫, 张苗苗, 孟刚刚
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Spatial Distribution and Controlling Factors of Chemical Weathering Intensity in Drainage Basins A Case Study in the Yangtze River Basin and Pearl River Basin
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Haiqin Chang, Yalong Fu, Xin Lin, Miaomiao Zhang, Ganggang Meng
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表1 长江和珠江流域水系沉积物主量元素、CIA和WIP统计特征
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Table 1 Statistical characteristics of major elements, CIA and WIP of stream sediments in the Yangtze and Pearl
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| 采样点数 | 平均值/(质量百分数,%) | / (质量百分数,%) | 河流平均值(a)/ (质量百分数,%) | UCC平均值(b)/(质量百分数,%) | 世界河流平均值(c)/(质量百分数,%) | 中国河流平均值(d)/(质量百分数,%) | Al2O3(长江) | 2 956 | 13.40 | / | 13.6 | 15.2 | 16.47 | 15.10 | Al2O3(珠江) | 1 172 | 14.44 | / | 19.9 | 15.2 | 16.47 | 15.10 | CaO(长江) | 2 956 | 2.03 | 1.83 | 3.8 | 4.2 | 3.63 | 3.73 | CaO(珠江) | 1 172 | 0.76 | 5.25 | 0.9 | 4.2 | 3.63 | 3.73 | Na2O(长江) | 2 956 | 0.85 | 4.05 | 0.8 | 3.9 | 0.96 | 0.89 | Na2O(珠江) | 1 172 | 0.23 | 16.12 | 0.3 | 3.9 | 0.96 | 0.89 | K2O(长江) | 2 956 | 2.40 | 1.24 | 2.5 | 3.4 | 2.04 | 2.58 | K2O(珠江) | 1 172 | 1.96 | 1.63 | 2.2 | 3.4 | 2.04 | 2.58 | MgO(长江) | 2 956 | 1.53 | 1.27 | 3.0 | 2.2 | 2.10 | / | MgO(珠江) | 1 172 | 0.67 | 3.12 | 1.2 | 2.2 | 2.10 | / | CIA(长江) | 2 956 | 72.90 | / | 71.7 | 48.0 | 75.5 | 71.40 | CIA(珠江) | 1 172 | 93.80 | / | 82.8 | 48.0 | 75.5 | 71.40 | WIP(长江) | 2 956 | 34.20 | / | 38.7 | 79.7 | 51.3 | / | WIP(珠江) | 1 172 | 6.40 | / | 25.6 | 79.7 | 51.3 | / |
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