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作 者 ：董元华,徐琪

期 刊 ：生态学报 1990年 10卷 4期 页码：323~327

关键词：水成土壤；有机质；还原能力；

Keywords:hydromorphic soil, succession, organic matter, reduction.,

摘 要 ：本文研究了湖北四湖地区和江苏里下河地区沼泽化的湖泊、沼泽与稻田生态系统演化中土壤有机质含量的变化规律及其同还原能力的关系。结果表明,土壤有机质含量的变化极有规律。从湖泊生态系统演化为沼泽生态系统时,土壤有机质含量显著增高。四湖地区表层土壤由3.80％增加到10.1％,里下河地区亦由4.32％变为14.4％。而当沼泽被开垦利用,演化为稻田生态系统时,土壤有机质含量又迅即下降,并随着开垦时间及土壤脱沼程度的增加,而下降的幅度增大。四湖地区初期脱沼土表层土壤下降了35％,脱沼土则下降了47％,里下河地区亦下降58％。潜育层土壤有机质含量的变化趋势与之相似,土壤的还原能力与有机质含量呈密切的正相关。

Abstract:Changes in organic matter content of surface and gleying horizon soils in the succession of wetland ecosystems were studied, which are from senile lake to swamp and rice fields in Four Lake region and Lixiahe region of China. In addition, the relation between organic matter content and reduction potential was also studied with incubation experiment. The results are as follows:The organic matter content of soil increased sharply in the succession from senile lake to swamp, and decreased significantly in the ...

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