亚热带地区树叶凋落物在流水和静水环境中的淋溶规律

被引:16
作者
迟国梁 [1 ,2 ]
童晓立 [1 ]
机构
[1] 华南农业大学资源环境学院
[2] 华南农业大学热带亚热带生态研究所
关键词
树叶凋落物; 淋溶; 树叶种类; 静水; 流水;
D O I
暂无
中图分类号
S714 [森林土壤学];
学科分类号
0903 ; 090301 ;
摘要
为了解亚热带地区水体中树叶凋落物在分解初期的淋溶规律,比较研究了广州地区8种常见树种的树叶凋落物在静水和流水环境中淋溶量的变化。结果表明,在第1 d内,8种树叶无论在静水还是流水环境下干重损失率均显著高于其他时段(P<0.05),但不同树种在淋溶量的大小上存在差异,其中以质地柔软、革质化程度低的人面子树叶干重淋溶率最大(流水中:27.0%;静水中:24.2%);质地坚硬、革质化程度高的竹柏树叶淋溶率最小(流水中:9.8%;静水中:8.0%)。第2 d和第3 d,8种树叶凋落物的干重损失率无显著差异,表明淋溶阶段趋于结束。综上结果表明,亚热带地区的树叶凋落物在静水环境和流水环境中的淋溶阶段均主要出现在第1天。
引用
收藏
页码:50 / 55
页数:6
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