%0 Journal Article
%T Responses of three-Stipa-communities net primary productivity along ortheast China Transect to seasonal distribution of precipitation<br>中国东北样带三种针茅草原群落初级生产力对降水季节分配的响应
%A YUAN Wenping
%A ZHOU Guangsheng
%A <br>袁文平
%J 应用生态学报
%D 2005
%I 
%X This paper analyzed the annual dynamics of the net primary productivity (NPP) of three Stipa communities along Northeast China Transect,and based on an integral regression model,discussed the responses of the NPP to the seasonal distribution of precipitation,aimed to reveal the effects of precipitation availability on plant NPP.The results indicated that the main factor restricting the annual dynamics of three Stipa communities NPP was the annual fluctuation of the monthly precipitation from November to next August.The precipitation from November to next April had a positive effect on the NPP,while the effect of that from May to July was decreased in different degrees.The seasonal distribution pattern of precipitation was quite similar for test Stipa communities,but S.grandis community had a higher utilization efficiency of precipitation than S.krylovii community,and S.baicalensis community had a much higher utilization efficiency of precipitation.Therefore,the seasonal distribution pattern of precipitation and its different effects on Stipa communities could be the main reasons inducing the zonal distribution of three test Stipa communities.
%K Northeast China transect (NECT)
%K Stipa community
%K Precipitation
%K Net primary productivity (NPP)<br>中国东北样带
%K 针茅草原
%K 降水量
%K 初级生产力
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=A3146BBC3C559ADA&yid=2DD7160C83D0ACED&vid=7801E6FC5AE9020C&iid=E158A972A605785F&sid=10A39635766FF5D0&eid=5568599C60D4BE87&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=10&reference_num=19