氮输入对森林土壤有机碳截存与损耗过程的影响

被引：30

作者：

程淑兰 ^{[1
]}

方华军 ^{[2
]}

马艳 ^{[3
]}

机构：

[1] 中国科学院研究生院

[2] 中国科学院地理科学与资源研究所

[3] 泉州师范学院资源与环境科学学院

来源：

水土保持学报 | 2007年 / 05期

关键词：

氮沉降; 凋落物分解; 土壤有机碳周转; 土壤呼吸; 稳定性碳同位素;

D O I：

暂无

中图分类号：

S714 [森林土壤学];

学科分类号：

090301 [土壤学];

摘要：

大气氮沉降对受氮限制的陆地生态系统碳截存/损耗的机理尚不清楚,尤其是对土壤有机碳(SOC)的输入、转化和输出过程的认识明显不足。本文论述了外源性氮素(氮沉降、人为增氮)对凋落物分解、土壤有机碳各组分周转的影响,以及土壤呼吸各组分(根系自养呼吸、根际微生物呼吸和SOM分解)对增氮的响应等领域的最新研究进展,指出了在上述研究领域中存在的问题,并提出拟解决的途径以及未来的可能研究方向,以期为该领域的研究提供参考。

引用

页码：82 / 85

页数：4

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