文献类型：期刊文献

中文题名：北亚热带6种森林凋落物碳素归还特征

英文题名：Carbon dynamics of litter-fall under six forest stands in subtropical China

作者：李正才[1] 杨校生[1] 周本智[1] 蔡晓郡[2] 孙娇娇[2] 格日乐图[1] 孙雪忠[2] 傅懋毅[1]

第一作者：李正才

机构：[1]中国林业科学研究院亚热带林业研究所;[2]浙江省富阳市林业局

年份：2010

期号：6

起止页码：43-46

中文期刊名：南京林业大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：浙江省自然科学基金项目(Y507684);浙江省科技厅重点农业项目(2008C12067-1);浙江省-中国林业科学研究院合作项目(2007SY11);中央级公益性科研院所基本科研业务费专项资金项目(RISF060701)

语种：中文

中文关键词：森林凋落物;有机碳输入;土地利用方式

外文关键词：forest litter-fall; litter input of organic carbon; land-use types

分类号：S718

摘要：基于凋落物野外收集的方法,于2004年对北亚热带地区6种主要森林类型凋落物形成过程中碳素归还特征进行了为期1~2 a的研究。结果表明：（1）次生林在3、6月份,马尾松林2、4月份凋落物有机碳输入形成双峰值;杉木在12月份、早竹在3月份、毛竹林在5—6月份凋落物有机碳输入形成单峰值;（2）次生林以凋落物形式年输入的有机碳储量达到3.22 t/hm2,其次是杉木林和马尾松林,两种不同经营方式毛竹林凋落物有机碳输入量基本相同;早竹林分有机碳输入量最小（1.39 t/hm2）;（3）6种土地利用类型凋落物有机碳数量组成以叶片为主,占整个凋落物的比例为58.00%~73.65%,枯枝、果实、杂物等有机碳数量各自占据的比例较小;（4）次生林以凋落物形式归还到地表的有机碳数量最大,表明对改善土壤有机质状况效果最好,自我肥力能力强,这也说明常绿阔叶林碳汇生态功能具有其他土地利用类型不可比拟的优势。
Based on the field study of forest little-fall collection,this paper dealt with carbon dynamics of forest litter under six land-use types in the subtropical China in 2004.The results showed that：（1） Carbon amount of litter-fall of the naturally secondly stands and masson pines formed double-peak in Mar.and Jun.,Feb.and Apr.,respectively,while Chinese fir stand,Ph.praecox and moso stand formed single-peak in Dec.,Mar.,May and Jun.respectively.（2） Carbon amount of little-fall of the naturally secondly stands was 3.22 t/hm2,the following were Chinese fir stand and masson pines,the extensively and intensively managed moso stand were almost the same,while the least was Ph.praecox stands,which was only 1.39 t/hm2.（3） Components of forest litter-fall carbon were mainly composed of leaf,which were among 58.00 % and 73.65 %,while branch,fruit and others occupied less proportion of forest litter-fall.（4） The naturally secondly stands had the best ability of improving the soil quality by self-fertilization,which meant their ecological function had advantages over other land-use types.