%0 Journal Article
%T STUDIES ON LEAVES DECOMPOSTION OF SOME TREE SPECIES IN CHANGBAI MOUNTAIN<br>长白山某些树种叶子的分解动态研究
%A Geng Xiao-yuan
%A <br>耿晓源
%A John Pastor
%A Bradely Dewey
%J 植物生态学报
%D 1993
%I Editorial Office of Chinese Journal of Plant Ecology
%X In the Broadleaved-korean pine forest, the dry weight loss of the leaf of Pinus koreansis, Quercus mongloica, Acer mono., Betula platyphyla, Ulumus propinqua, Tilia amurrensis, and Populus davadiana after 300 days situ decomposition, is 24.2%, 37.6%, 30.8%, 44%, 47%, 50.6% and 55.6% respectively. During the incubation,the dry weight loss has a lineary relationship (R=0.99) with the tested chemical properties of the leavies. In the firest several months, the contents of the lignin and total nitrogen in the leavies are generally increased. In contrast, the water soluable substances are reduced rapitly.Except for basswood leaf, the other leavies can immobolize certain mount of nitrogen until reaching the critical points where the nitrogen content of the pine, oak, elm, birch, aspen, and maple leaf is 0.96%, 1.41%, 2.38%, 1.67%, 1.32%, and 1.32% respectively, From the critical points the leavies begin to release mineralized nitrogen.
%K Litters
%K Decomposition
%K Forest ecosystem
%K Nutrients cycling<br>凋落物
%K 分解
%K 森林生态
%K 养分循环
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=2F2173CCFF292BF447DC2681EA33BBAE&aid=0DD65AAA7B099C55D067FBFB4A4E1915&yid=D418FDC97F7C2EBA&vid=BCA2697F357F2001&iid=CA4FD0336C81A37A&sid=869807E2D7BED9EC&eid=6700D0D256586E73&journal_id=1005-264X&journal_name=植物生态学报&referenced_num=0&reference_num=0