水土保持学报2011，Vol.25Issue(3)：198-201,224,5.
辽东山区天然次生林和落叶松人工林的土壤呼吸
Soil Respiration of Natural Secondary Forest and Larch Plantation in Montane Region of Eastern Liaoning Province
摘要
Abstract
CO2 effluxes rate was monitored using an infrared gas exchange analyzer (Licor-8100) from May to October. Simultaneously, soil temperature and moisture were also recorded. The results showed that the diurnal fluctuation of CO2 effluxes appeared a single peak. The relationship between soil respiration rate (y) and the variable of soil temperature (t) and soil moisture (w) at 10 cm soil depth could be described by the following exponential equation:y=0.3614e0.1219x(R2 =0.7020,P＜0.05)and y=0.9303e0.0812x (R2=0.8164,P＜0.05). The soil respiration released 433.08, 538.46 gC/(m2·a) in the secondary forest and plantation ecosystems, respctively. The annual average natural secondary forest soil C released nearly 20％ lower than the larch plantation, it indicated that secondary forests played an important role in carbon sinks in montane region of eastern Liaoning province.关键词
土壤呼吸/天然次生林/落叶松人工林Key words
soil respiration rate/ secondary forest ecosystems/ larch plantation分类
农业科技引用本文复制引用
张慧东,尤文忠,邢兆凯,魏文俊,赵刚,颜廷武..辽东山区天然次生林和落叶松人工林的土壤呼吸[J].水土保持学报,2011,25(3):198-201,224,5.基金项目
国家重点基础研究发展计划(2011CB403201) （2011CB403201）
辽宁省自然科学基金(20092018) （20092018）
国家林业公益性行业专项(200704005/wb0503) （200704005/wb0503）
