四川森林土壤有机碳储量估算方法选择

Selection of Methods for Estimating the Forest Soil Orgnic Carbon Storage in Sichuan Province

土壤碳是陆地碳库的重要成分,森林土壤有机碳储量的变化对全球气候变化产生重要影响。对森林土壤有机碳储量的正确估计是编制2005年IPCC国家温室气体清单的重要任务之一,也是其中的难点。本文简要介绍了森林土壤有机碳储量的各种估算方法并对各自的优缺点做了进一步的分析,指出了不确定性产生的主要原因。在分析了四川森林土壤的基本特征后,从满足编制IPCC温室气体清单高层次的方法上考虑,指出四川森林土壤有机碳储量估算的合理方法是土壤类法和生命带法相结合的办法。

Soil carbon is a main part of the terrestrial carbon pool.Sequestration and emission of soil orgnic carbon（SOC） has significant impacts on global climate change.The estimating methods of soil carbon pool had an important function to exactly estimate carbon pool.How to estimate the storage of forest SOC effectively is not only the essential aspect but also the most difficult task for compiling the 2005-National-GHG（Green-House-Gas）-IPCC budge.In this paper,a description is made of all kinds of methods for estimating forest SOC storage,analyzing the excellence and disadvantage of each method.On the base of ananlyzing the soil distributing character,and for the purpose of compiling the 2005-National-IPCC-GHG budge,it is pointed out that the optimal method for estimating the storage of forest SOC in Sichuan Pronvince is to apply soil taxonony in combination with life zones.