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
常海钦, 付亚龙, 林鑫, 张苗苗, 孟刚刚

Spatial Distribution and Controlling Factors of Chemical Weathering Intensity in Drainage Basins A Case Study in the Yangtze River Basin and Pearl River Basin
Haiqin Chang, Yalong Fu, Xin Lin, Miaomiao Zhang, Ganggang Meng
表1 长江和珠江流域水系沉积物主量元素、CIAWIP统计特征
Table 1 Statistical characteristics of major elements, CIA and WIP of stream sediments in the Yangtze and Pearl
采样点数 平均值/(质量百分数,%)

α E A l /

(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 /