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苏北泥质海岸水杉林地土壤的异养呼吸

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

Issue:
2010年01期
Page:
15-18
Column:
研究论文
publishdate:
2010-01-30

Article Info:/Info

Title:
Soil heterotrophic respiration of metasequoia shelter forests in silting coastal area of northern Jiangsu province
Author(s):
KONG Yuguang12 WANG Yinhua1 ZHANG Jinchi1* CHU Dongsheng3 ZHANG Donghai1 WANG Ruyan1 ZHANG Xiaoqing1
1.Jiangsu Key Laboratory of Forestry Ecological Engineering, Nanjing Forestry University, Nanjing 210037, China; 2.Shandong Forest Survey and Planning Institute, Jinan 250014, China; 3.Dafeng Forestry Centre of Jiangsu Province, Yancheng 224100, China
Keywords:
soil heterotrophic respiration temperature sensitivity coastal shelter forest metasequoia plantation
Classification number :
S714.2
DOI:
10.3969/j.jssn.1000-2006.2010.01.004
Document Code:
A
Abstract:
Soil heterotrophic respiration is an important part of forest carbon cycle; therefore, studies on this topic will help to explore the causes for global climatic change. Soil heterotrophic respiration of 15year old metasequoia plantation was investigated in silting coastal area of northern Jiangsu province and soil CO2 efflux was measured in situ with the static alkali absorption method. Results showed that soil heterotrophic respiration rate of the metasequoia plantation between February and October varied from 4.72 to 12.87 g/(m2·d), the largest soil respiration rate occurred in July and the smallest appeared in February. Temperature was the limiting factor to soil respiration. The Q10 values were calculated with forest air temperature and the soil temperature of 2, 5, 10 cm soil depth were 1.00, 1.59, 1.55 and 1.54, respectively. These results are important to future studies on soil respiration of silting coastal plantations and provide basic data for the further research in carbon circle.

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Last Update: 2010-02-09