%0 Journal Article
%T Hydro-chemical properties of litter layer in two kinds of plantations in Beijing Xishan Mountain<br>北京西山不同人工林枯落物层的水化学性质
%A WANG Deng-zhi
%A XIANG Xing-zheng
%A NIE Li-shui
%A <br>王登芝
%A 向星政
%A 聂立水
%J 应用生态学报
%D 2007
%I 
%X The study on the hydro-chemical properties of litter layer in Pinus tabulaeformis and Querous variabilis plantations in Beijing Xishan Mountain showed that after the precipitation passed through the plantations and penetrated into litter layer, the element concentrations in precipitation changed greatly. The concentrations of K+, Na+, Ca2+, Mg2+, NH4+ -N and NO3- -N in litter water had similar changing trends as those in throughfall. The average concentrations of K+, Na+, Ca2+ and Mg2+ in litter water were higher than those in throughfall, but NH4+ -N and NO3- -N were in adverse. Ca2+ increased most, with the increment of 7.54 mg x L(-1) in Q. variabilis plantation and 5.27 mg x L(-1) in P. tabulaeformis plantation. The concentrations of K+, Na+, Ca+, Mg2+ in litter water were higher in Q. variabilis than in P. tabulaeformis plantation, but NH4+ -N and NO3- -N concentrations were lower in Q. variabilis than in P. tabulaeformis. After leaching by precipitation, the nutrients return into woodland was 41.59 kg x hm(-2) in Q. variabilis and 58.12 kg x hm(-2) in P. tabulaeformis, among which, Ca2+ returned more, followed by K+.
%K plantation
%K litter
%K throughfall
%K chemical element<br>人工林
%K 枯落物
%K 穿透雨
%K 化学元素
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=DB0102F3D87A1711A4EFB72F34FD8534&yid=A732AF04DDA03BB3&vid=13553B2D12F347E8&iid=708DD6B15D2464E8&sid=B25951A370BE1E16&eid=4D26836B91D9EF6F&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=20