土壤有机碳储量估算方法及土地利用调控措施研究进展

研究目的:综述土壤有机碳储量估算及调控措施的进展,展望中国有关研究的发展趋势。研究方法:文献资料法、对比法。研究结果:全球与中国陆地生态系统碳储量估算方法主要有土壤类型法、模型法、GIS估算法、生命带类型法等,但受资料来源、区域土壤的空间异质性等的限制,估算方法的适用性和结果差异较大;土壤固碳的土地利用调控措施主要有农艺措施、生物措施、化学措施、政策措施等。研究结论:正确评价土壤碳储量与合理的土地利用,对减缓可能的温室效应、减少全球碳循环通量具有重要意义。

Review on the Methods of Soil Organic Carbon Storage Estimation and Land Use Control Measures

The purpose of this paper is to review the development of soil organic carbon storage estimation methods and its control measures in order to give a outlook of the future research in China. Methods of documentation and comparison are employed. The results indicate:（1）main methods of carbon storage estimation in global and Chinese terrestrial ecosystems include soil type method，model method，GIS estimation and life zone method, etc.; （2）due to the limitations from data resources, spatial and temporal heterogeneities of regional soil, there are comparatively large differences among the applicability of the methods and the results of estimation; （3）the main land use control measures aiming at soil carbon sequestration enhancement include agricultural measures, biological measures, chemical measures and policy measures, etc. It is concluded that the proper estimation of carbon storage and feasible land use patterns could provide significant meanings to relieve possible greenhouse effects and reduce global carbon cycling.