%0 Journal Article
%T Effect of harvesting and cleaning on nutrition in Chinese fir plantation<br>不同收获与清林方式对杉木林养分的影响
%A YANG Yu sheng
%A CHEN Guang shui
%A XIE Jin sheng
%A YU Xin tuo
%A <br>杨玉盛
%A 陈光水
%A 谢锦升
%A 俞新妥
%J 自然资源学报
%D 2000
%I 
%X The trasferrence of nutrient elements caused by three different harvesting systems of complete tree harvesting,whole tree harvesting and conventional harves ting under the third rotational stand of Chinese fir were compared in this paper.The result indicated that the loss of nutrient elements due to complete tree and whole tree harvesting was 1 99 and 1 64 times that of due to conventional harvesting,respectively.Slash burning resulted in great loss of N and P2O5 in forest ecosystem.The loss of N and P2O5 from stands due to adopting conventional silvicultural system (harvesting and following burning) was both higher than that of whole tree and complete tree harvesting without burning.Thus,shortening rotation length may cause serious deficiency of site N and P2O5 on site.Complete tree and whole tree harvesting can cause substantial base ion removal from the stand and resulted in seriously soil acidification.
%K whole
%K tree harvesting
%K conventional harvesting
%K burning
%K Chinese fir stand
%K nutrition loss<br>全株收获
%K 全木收获
%K 传统收获
%K 火烧
%K 杉木林
%K 养分损失
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=4DCB9A3AF3395AF0101DE5302EF3C300&aid=6A27BD1C9577C332D136A2F89DF11C25&yid=9806D0D4EAA9BED3&vid=23CCDDCD68FFCC2F&iid=0B39A22176CE99FB&sid=76B5E24D6EC46B4B&eid=205BE674D84A456D&journal_id=1000-3037&journal_name=自然资源学报&referenced_num=4&reference_num=9