%0 Journal Article
%T Review on the ecological effects of N deposition in arid and semi-arid areas<br>干旱半干旱区氮沉降生态效应研究进展
%A ZHOU Xiao-Bing
%A ZHANG Yuan-Ming
%A <br>周晓兵
%A 张元明
%J 生态学报
%D 2009
%I 
%X The ecological effect of atmospheric N deposition has become a hot issue along with intensive human activities and global climatic change. N deposition can result in a great change of ecosystem's structure and function, leading to a serial of ecological effects. In this article we reviewed the ecological consequence of N deposition in arid and semi-arid ecosystem as follow: (1) the characteristic of N deposition in arid and semi-arid area is that the nitrogen enters into the N cycle in a form of pulse, impacting other ecological processes. (2) N deposition can increase the mineralization of organic nitrogen and the content of inorganic N in the soil. N cycle can also be affected by other factors. (3) N deposition has a positive effect on the metabolic activity of microbe in soil, and there are still some argues on the effect on microbial biomass. (4) N deposition can influence plant productivity, root growth, although these effects are also regulated by water availability. (5) N deposition can reduce the abundance of endemic species and is benefit to the invasion of exotic species.
%K arid area
%K N deposition
%K N cycle
%K microbe
%K productivity<br>干旱地区
%K 氮沉降
%K 氮循环
%K 微生物
%K 生产力
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=34334C5669B28600F269C2FB4F59EF43&yid=DE12191FBD62783C&vid=771469D9D58C34FF&iid=DF92D298D3FF1E6E&sid=6C3248B3D147662A&eid=BA5354E88BC0A1C9&journal_id=1000-0933&journal_name=生态学报&referenced_num=2&reference_num=122