草地群落的土壤呼吸

Soil Respiration in Grassland Communities in the World

通过土壤呼吸作用向大气释放ＣＯ２是陆地生态系统碳循环的一个最主要的环节，也是人类活动影响下陆地生态系统对大气中ＣＯ２浓度产生影响，从而导致全球气候变化的关键生态学过程，因而成为全球碳循环研究中倍受关注的核心问题［３３，３７，３８］。１土壤呼吸的测定方...

Soil respiration is a key process in the carbon cycle for grassland ecosystems. The commonly-used methods for measuring soil respiration were introduced in this paper. The CO_2 flux in soil respiration for major grassland communities in the world and its relation to vegetation and climate were summarized and expounded. The impacts of land-use changes on soil respiration were discussed. Finally, the turnover and residence time of soil organic matter in the soils of different grasslands were compared.