茂兰喀斯特森林主要演替群落土壤呼吸研究

吴鹏; 崔迎春; 杨婷; 丁访军; 陈骏; 朱军

doi:10.3969/j.issn.1000-2006.2013.04.011

茂兰喀斯特森林主要演替群落土壤呼吸研究

吴鹏,崔迎春,杨婷,丁访军,陈骏,朱军

南京林业大学学报（自然科学版） ›› 2013, Vol. 37 ›› Issue (04) : 57-62.

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南京林业大学学报（自然科学版） ›› 2013, Vol. 37 ›› Issue (04) : 57-62. DOI: 10.3969/j.issn.1000-2006.2013.04.011

研究论文

茂兰喀斯特森林主要演替群落土壤呼吸研究

吴鹏¹,崔迎春¹,杨婷²,丁访军¹,陈骏¹,朱军¹

作者信息 +

Soil respiration of major successional communities in the Maolan Nature Reserve of Karst areas

WU Peng¹, CUI Yingchun¹, YANG Ting², DING Fangjun¹, CHEN Jun¹,ZHU Jun¹

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文章历史 +

摘要

以茂兰自然保护区喀斯特植被两种主要演替群落(喀斯特原生乔木林和次生林)为研究对象,采用LI-6400-09便携式土壤呼吸室对其土壤呼吸速率进行了连续定位观测。结果表明:(1)喀斯特乔木林和次生林的土壤呼吸速率、土壤温度和林内气温的日变化因演替群落和月份的不同而存在差异;(2)两种演替群落的土壤呼吸速率具有明显的季节变化特征,表现为夏季>秋季>春季>冬季; 喀斯特乔木林的月平均土壤呼吸速率在0.39～4.65 μmol/(m²·s)之间,变异幅度达11.92,次生林的月平均土壤呼吸速率在0.93～4.56 μmol/(m²·s)之间,变异幅度为4.90;(3)两种演替群落土壤呼吸速率的季节变化与林内气温和不同层次土壤温度均呈显著性正相关;(4)喀斯特乔木林土壤呼吸的Q₁₀值在3.82～4.07之间,次生林的Q₁₀值在2.52～2.61之间,喀斯特乔木林土壤呼吸对温度的敏感性指数要大于次生林,且土壤呼吸的Q₁₀值随着土壤深度的增加而增加。

Abstract

In order to study the soil respiration of major successional communities in Karst areas, LI-6400-09 portable soil respiration fitting equipment was employed in this study to carry on continuous observation on the soil respiration rates, of which were the two major successional communities of Karst primary forest and secondary forest as the research subjects. The results showed that:(1)The soil respiration rates, soil temperature and temperature inside forest were different in the diurnal changing range among the different successional communities and different months.(2)There were distinct seasonal changes for the soil respiration rates of the two major successional communities,and which were summer, autumn, spring and winter in decreasing order. The monthly mean of soil respiration rates ranged from 0.39-4.65 μmol/(m²·s)in Karst primary forest and ranged from 0.93-4.56 μmol/(m²·s)in secondary forest, respectively.(3)The soil respiration rates were significantly and positively correlated with soil temperature in different depth and temperature inside forest.(4)The Q₁₀ value of soil respiration ranged from 3.82 to 4.07 in Karst primary forest and ranged from 2.52 to 2.61 in secondary forest, respectively. Moreover, the Q₁₀ value in Karst primary forest was higher than in secondary forest; with soil depth increase, the Q₁₀ value increased.

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吴鹏,崔迎春,杨婷,丁访军,陈骏,朱军. 茂兰喀斯特森林主要演替群落土壤呼吸研究[J]. 南京林业大学学报（自然科学版）. 2013, 37(04): 57-62 https://doi.org/10.3969/j.issn.1000-2006.2013.04.011

WU Peng, CUI Yingchun, YANG Ting, DING Fangjun, CHEN Jun,ZHU Jun. Soil respiration of major successional communities in the Maolan Nature Reserve of Karst areas[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2013, 37(04): 57-62 https://doi.org/10.3969/j.issn.1000-2006.2013.04.011

中图分类号： S714

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基金

收稿日期:2012-09-12 修回日期:2013-02-27
基金项目:贵州省科技厅基金项目(黔科合J字[2010]2054); 贵州省科技厅创新平台项目(黔科合院所创能[2009]4002)
第一作者:吴鹏,助理研究员。E-mail:zuishaoxu@163.com。
引文格式:吴鹏,崔迎春,杨婷,等. 茂兰喀斯特森林主要演替群落土壤呼吸研究[J]. 南京林业大学学报:自然科学版,2013,37(4):57-62.