南京林业大学学报（自然科学版）Issue(3)：19-23,5.DOI:10.3969/j.issn.1000-2006.2014.03.004
氮添加对杨树人工林土壤活性有机碳季节变化的影响
Effects of nitrogen addition on the seasonal variations of soil labile organic carbon in different age poplar plantations
摘要
Abstract
In order to understand the effects of atmospheric nitrogen deposition on the carbon cycle of forest ecosystem, a field experiment of nitrogen addition at Dongtai forest farm in Jiangsu province was conducted in May 2012. The results showed that the nitrogen addition increased the contents of soil microbial biomass carbon ( MBC) and dissolved organic carbon (DOC).The soil MBC and DOC exhibited obvious seasonal patterns. Overall,the contents of soil MBC and DOC were higher in summer and autumn,but lower in winter and spring. The MBC had a significantly positive correlation with soil temperature (p<0.01).The DOC did not correlated with soil temperature (p>0.05).The results implicated that the seasonal variations of soil labile organic in poplar plantations were affected by soil temperature. In addition,the soil liable organic carbon respond positively to nitrogen addition.关键词
氮添加/杨树人工林/土壤活性有机碳/季节变化/苏北沿海地区Key words
nitrogen addition/poplar plantation/soil labile organic carbon/seasonal variation/coastal region of northern Jiangsu province分类
农业科技引用本文复制引用
许凯,徐钰,葛之葳,于水强,王国兵,范换,周丹燕,阮宏华..氮添加对杨树人工林土壤活性有机碳季节变化的影响[J].南京林业大学学报（自然科学版）,2014,(3):19-23,5.基金项目
国家重点基础研究发展计划（2012CB416904）；江苏省普通高校研究生科研创新计划项目（CXLX12-0521）；江苏高校优势学科建设工程资助项目（ PAPD）；江苏高校协同创新计划 （）
