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- Title
亚热带天然阔叶林转换为杉木人工林对土壤呼吸的影响.
- Authors
张 睿; 白 杨; 刘 娟; 姜培坤; 周国模; 吴家森; 童志鹏; 李永夫
- Abstract
Soil CO2 effluxes in natural broad-leaved forest and the conversed Chinese fir plantation in Linglong Mountains Scenic of Zhejiang Province were evaluated by using static closed chamber and gas chromatography method. The results showed that soil CO2 efflux showed consistent seasonal dynamics in natural broad-leaved forest and Chinese fir plantation, with the maximums observed in summer and autumn, the minimums in winter and spring. Soil CO2 effluxes were 20.0-111.3 and 4.1-118.6 mg C·m-2·h-1 in natural broad-leaved forest and Chinese fir plantation, respectively. The cumulative soil CO2 emission of natural broad-leaved forest (16.46 t CO2 · hm-2·a-1) was significantly higher than that of Chinese fir plantation (11.99 t CO2 · hm-2 · a-1). Soil moisture did not affect soil CO2 efflux. There was a significant relationship between soil CO2 efflux and soil temperature at 5 cm depth. There was no significant relationship between soil CO2 efflux of natural broad-leaved forest and water soluble organic carbon content, while water soluble organic carbon content affected significantly soil CO2 efflux in Chinese fir plantation. Converting the natural broad-leaved forest to Chinese fir plantation reduced soil CO2 efflux significantly but improved the sensitivity of soil respiration to environmental factors.
- Publication
Yingyong Shengtai Xuebao, 2015, Vol 26, Issue 10, p2946
- ISSN
1001-9332
- Publication type
Article