%0 Journal Article
%T Biomass and yield of Betula platyphylla population in Mila Mount of Tibet<br>西藏米拉山白桦种群生物量和生长量研究
%A LUO Daqing
%A ZHENG Weilie
%A WANG Jingsheng
%A FANG Jiangping
%A XIN Xuebing
%A ZHONG Guohui
%A <br>罗大庆
%A 郑维列
%A 王景生
%J 应用生态学报
%D 2004
%I 
%X Mila Mount in Southeast Tibet is the west boundary of the horizontal distribution of Betula platyphylla. It is also the highest altitude area in China and the world, where Betula platyphylla is distributed. Based on the investigation of regional sample plots and the analysis of analytic trees, this paper compared the biomass and yield of Betula platyphylla population at different slope orientation and different altitude. The results showed that the growth of Betula platyphylla was greatly interfered by human activities. The yearly productivity of Betula platyphylla grown in Mila Mount was 363.1-2,072.94 kg x hm(-2), and the biomass was 7,625.00-33,167.00 kg x hm(-2), indicating that the biomass of Betula platyphylla was quite different for different population. The productivity and biomass of Betula platyphylla coppice after cutting were lower than those of seedling forest, and there existed youth broken-down in the coppice. The zonal changes of water resources had no significant effect on the water allocation and the biomass of Betula platyphylla.
%K High altitude
%K Coppice tree
%K Disturbance
%K Analytic trees
%K Youth broken-down<br>高海拔
%K 萌生木
%K 干扰
%K 解析木
%K 早衰
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=22BE346D53116CBD&yid=D0E58B75BFD8E51C&vid=23CCDDCD68FFCC2F&iid=5D311CA918CA9A03&sid=1EB017852C08068A&eid=FC9A32AA461904A5&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=5&reference_num=11