大气氮沉降对森林土壤酸化的影响

被引:97
作者
肖辉林
机构
[1] 广东省生态环境与土壤研究所!广州
关键词
大气污染; 氮沉降; 森林土壤; 酸化;
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
因大气污染而不断增加的大气氮沉降量 ,在许多地区超过了森林生态系统的氮需求。氮在土壤中的化学和生物化学反应对H+ 离子的产生与消耗有重要影响。NH+4和NO-3输入与输出的平衡状态影响着土壤 -土壤溶液系统的酸化速率。过剩的氮沉降将增加NH+4的硝化和NO-3的淋失 ,加速土壤的酸化。土壤酸化对森林有危害作用。
引用
收藏
页码:111 / 116
页数:6
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