草地土壤呼吸研究进展

Progress in research on soil respiration of grasslands

土壤呼吸是生态系统物质循环和能量流动的重要过程 ,具有多方面的生态意义。在综合比较了土壤呼吸的各种测定方法 ,概括了草地土壤呼吸的速率和年排放量 ,并就影响草地土壤呼吸的一些重要因素进行了阐述 ,文章最后讨论了草地土壤呼吸今后的研究方向。

Soil respiration is of great importance in mass circulation and energy flow through ecosystems.It is also an index for many functional processes of ecosystems.In this paper,methods of measuring soil respiration were compared.Rates of soil respiration and quantities of annual CO\-2 release from different grasslands were summarized.And factors affecting soil respiration were discussed.The paper suggested emphases of further study in this field.