苏北泥质海岸水杉林地土壤的异养呼吸

孔雨光; 王因花; 张金池; 储冬生; 张东海; 王如岩; 张小庆

doi:10.3969/j.jssn.1000-2006.2010.01.004

苏北泥质海岸水杉林地土壤的异养呼吸

孔雨光,,王因花,张金池,储冬生,张东海,王如岩,张小庆

南京林业大学学报（自然科学版） ›› 2010, Vol. 34 ›› Issue (01) : 15-18.

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南京林业大学学报（自然科学版） ›› 2010, Vol. 34 ›› Issue (01) : 15-18. DOI: 10.3969/j.jssn.1000-2006.2010.01.004

研究论文

苏北泥质海岸水杉林地土壤的异养呼吸

孔雨光¹,²,王因花¹,张金池¹^*,储冬生³,张东海¹,王如岩¹,张小庆¹

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Soil heterotrophic respiration of metasequoia shelter forests in silting coastal area of northern Jiangsu province

KONG Yuguang¹,², WANG Yinhua¹, ZHANG Jinchi¹^*, CHU Dongsheng³, ZHANG Donghai¹, WANG Ruyan¹, ZHANG Xiaoqing¹

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摘要

采用碱液吸收法对苏北泥质海岸15年生水杉(Metasequoia glyptostroboides Hu & Cheng)林地的土壤异养呼吸进行了测定。结果表明：水杉林地2—10月土壤异养呼吸速率CO2变化范围为4.72~12.87 g/(m2·d)，最大值出现在7月，最小值出现在2月。土壤温度是影响土壤异养呼吸的主要因子，温度变化能够解释土壤异养呼吸季节变化的62.1 %~70.9 %，土壤含水量与土壤异养呼吸的关系不显著。利用林内气温及地表下2、5、10 cm处的土壤温度得到水杉林地的Q10值分别为1.00、1.59、1.55、1.54。

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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孔雨光,,王因花,张金池,储冬生,张东海,王如岩,张小庆. 苏北泥质海岸水杉林地土壤的异养呼吸[J]. 南京林业大学学报（自然科学版）. 2010, 34(01): 15-18 https://doi.org/10.3969/j.jssn.1000-2006.2010.01.004

KONG Yuguang,, WANG Yinhua, ZHANG Jinchi, CHU Dongsheng, ZHANG Donghai, WANG Ruyan, ZHANG Xiaoqing. Soil heterotrophic respiration of metasequoia shelter forests in silting coastal area of northern Jiangsu province[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2010, 34(01): 15-18 https://doi.org/10.3969/j.jssn.1000-2006.2010.01.004

中图分类号： S714.2

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基金

收稿日期：2009-02-15修回日期：2009-05-19基金项目：“十一五”国家科技支撑计划(2006BAD03A140301)作者简介：作者简介：孔雨光(1979—),博士生。*张金池(通信作者):教授。Email: nfujczhang@sina.com。引文格式：孔雨光,王因花,张金池,等. 苏北泥质海岸水杉林地土壤的异养呼吸[J]. 南京林业大学学报:自然科学版,2010,34(1):15-18.