文献类型：期刊文献

中文题名：近天然落叶松云冷杉林土壤有机碳研究

英文题名：Soil organic carbon in semi-natural mixed larch-spruce-fir stands of northeastern China.

作者：王海燕[1] 雷相东[2] 张会儒[2] 杨平[1]

第一作者：王海燕

机构：[1]北京林业大学水土保持学院 水土保持与荒漠化防治教育部重点实验室,100083;[2]中国林业科学研究院资源信息研究所

年份：2009

期号：3

起止页码：11-16

中文期刊名：北京林业大学学报

外文期刊名：Journal of Beijing Forestry University

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

基金：“十一五”国家科技支撑计划项目(2006BAD03A0802)

语种：中文

中文关键词：近天然落叶松云冷杉林;土壤有机碳含量;土壤有机碳密度;间伐

外文关键词：semi-natural mixed larch-spruce-fir stands; soil organic carbon content; soil organic carbon density ; thinning

分类号：S714.5

摘要：森林土壤有机碳是土壤有机碳库的重要组成部分。研究森林经营对土壤有机碳的影响对于应对气候变化下的森林经营有重要意义。该文以东北近天然落叶松云冷杉林地为对象,研究不同层次（0-20 cm^2、0-40 cm和40-60 cm）的土壤有机碳含量和有机碳密度、间伐的影响及其与其他土壤特性的关系。结果表明：①近天然落叶松云冷杉林土壤有机碳含量平均值为51.11 g/kg,0-60 cm土壤剖面有机碳密度为27.20 kg/m^2;②土壤有机碳含量和有机碳密度随土壤深度增加而显著减少,但采伐强度不同其减少程度不同;③间伐强度对土壤有机碳含量和有机碳密度的影响不显著,间伐20年后不同间伐强度间土壤有机碳含量和有机碳密度没有明显的差异;④土壤有机碳含量与土壤密度呈显著或极显著负相关,而与土壤含水量呈显著或极显著正相关;⑤不同土层中,土壤有机碳含量和有机碳密度与土壤pH值和土壤N、P、K全量和有效量的相关性不尽一致。在整个土壤剖面,除土壤pH以外,土壤有机碳含量和有机碳密度与土壤N、P和K的全量和有效量均呈显著或极显著正相关。
Forest soil organic carbon （SOC） is an important component of SOC pool. It is of great importance to study the effects of forest management on SOC for mitigating climate changing effects. Semi-natural mixed larch-spruce-fir stands in northeastem China were selected for field experiment to study SOC content in the soil layers of 0-20 cm, 20-40 cm, 40-60 cm and SOC density. The authors also examined the effects of thinning on SOC and the relationship between SOC and other soil characteristics. The results were showed as the followings ： 1） the mean SOC content was 51.11 g/kg and SOC density in the whole soil profile （0-60 cm） was 27.20 kg/m^2 ; 2） with the increase of soil depth, SOC content and density decreased significantly, but the decrease varied with thinning intensity ; 3） there was no significant effects of thinning intensity on SOC content and density. No obvious difference was observed for SOC content and density 20 years after thinning; 4） SOC content had significant negative correlations with soil bulk density, but positive correlations with soil water content; 5） the correlations between SOC content as well as SOC density and soil pH value, total and available soil N, P and K varied in different soil layers. In the whole soil profile, except for soil pH, the SOC content and density had very significant or significant positive correlations with total and available soil N, P and K.