应用生态学报2012，Vol.23Issue(6)：1469-1475,7.
万木林保护区柑橘和锥栗园土壤呼吸的比较
Dynamic changes of soil respiration in Citrus reticulata and Castanea henryi orchards in Wanmulin Nature Reserve, Fujian Province of East China
摘要
Abstract
From January 2009 to December 2009, the soil respiration in the Citrus reticulata and Castanea henryi orchards in Wanmulin Nature Reserve was measured with Li-8100, aimed to characterize the dynamic changes of the soil respiration and its relationships with soil temperature and moisture in the two orchards. The monthly variation of the soil respiration in the orchards was single-peaked, with the peak appeared in July (3. 76 μmol ·m-2 ·s-1 ) and August (2.69 μmol· m-2·s-1). Soil temperature was the main factor affecting the soil respiration, and explained 73% -86% of the monthly variation of soil respiration. The average annual soil respiration rate was significantly higher in Citrus reticulata orchard than in Castanea henryi orchard, with the mean value being 2.68 and 1. 55 μmol ·m-2 ·s-1 , respectively. There was a significant positive correlation between the soil respiration rate and soil moisture content in Castanea henryi orchard, but less correlation in Citrus reticulata orchard. The Q10 value of the soil respiration in Citrus reticulata and Castanea henryi orchards was 1. 58 and 1. 75, and the annual CO2 flux was 10. 01 and 5. 77 t C·hm-2·a-1, respectively.关键词
柑橘/锥栗/土壤呼吸/土壤温度Key words
Citrus reticulata/ Castanea henryi/ soil respiration/ soil temperature分类
农业科技引用本文复制引用
王超,黄蓉,杨智杰,刘强,陈光水,万晓华..万木林保护区柑橘和锥栗园土壤呼吸的比较[J].应用生态学报,2012,23(6):1469-1475,7.基金项目
"十一五"国家科技支撑计划项目(2008BAD95B08)和福建省自然科学基金项目(2008J0124)资助. （2008BAD95B08）
