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氮添加对杨树人工林土壤活性有机碳季节变化的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2014年03期
Page:
19-23
Column:
专题报道
publishdate:
2014-05-15

Article Info:/Info

Title:
Effects of nitrogen addition on the seasonal variations of soil labile organic carbon in different age poplar plantations
Article ID:
1000-2006(2014)03-0019-05
Author(s):
XU KaiXU YuGE ZhiweiYU ShuiqiangWANG GuobingFAN HuanZHOU DanyanRUAN Honghua*
Jiangsu Key Laboratory of Forestry Ecological Engineering,Nanjing Forestry University,Nanjing 210037,China
Keywords:
nitrogen addition poplar plantation soil labile organic carbon seasonal variation coastal region of northern Jiangsu province
Classification number :
S714
DOI:
10.3969/j.issn.1000-2006.2014.03.004
Document Code:
A
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.

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Last Update: 2014-05-15