%0 Journal Article
%T Decomposition and Nutrient Release from Coarse Woody Debris of Castanopsis chinensis in Dinghushan Forest Ecosystem<br>鼎湖山锥栗粗木质残体的分解和元素动态
%A LUE Ming-he
%A ZHOU Guo-yi
%A ZHANG De-qiang
%A GUAN-Lili
%A <br>吕明和
%A 周国逸
%A 张德强
%A 官丽莉
%J 热带亚热带植物学报
%D 2006
%I 
%X The nutrient dynamics during the decomposition of coarse woody debris(CWD) with different diameters from Castanopsis chinensis in Dinghushan monsoon evergreen broadleaved forest,Guangdong Province,was examined by sampling debris that were at various decaying stages.Changes in debris density were measured in debris with diameters of 5-10 cm(grade 1),10-20 cm(grade 2) and 20-30 cm(grade 3) to study the composition rates,nutrient dynamics,and substrate quality during decay.Up to decay stage III,CWD grades 1,2,and 3 lost its weight and carbon by 36%,48% and 43%,and 33%,47% and 19%,respectively.The concentrations of N,P,Mg,Ca and Na increased while C and K decreased.The increase in element content was likely due to lower leaching rate campared to the loss of CWD mass.N accumulation in CWD might be caused by nitrogen fixing bacteria and fungi.The change in ratio of N to P showed a good decomposition indicator in CWD.The release of carbon and other main nutrients was slow,thus CWD exhibited an important long-term carbon sink in the forest.
%K Castanopsis chinensis
%K Decomposition of coarse woody debris
%K Debris density
%K Nutrients<br>锥栗
%K 粗木质残体分解
%K 化学元素
%K 粗木质残体密度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=A74F042DF90151A4E3EF193E13FD5E1E&aid=3C9894D2991605B1&yid=37904DC365DD7266&vid=F3583C8E78166B9E&iid=0B39A22176CE99FB&sid=D767283A3B658885&eid=480C51B1F0CE0AB6&journal_id=1005-3395&journal_name=热带亚热带植物学报&referenced_num=2&reference_num=14