土壤固碳潜力估算方法研究进展

A review of estimation methods of soil carbon sequestration potential

论述了农田土壤固碳潜力估算的常见方法,最大值法、饱和值法、分类定级法、加权法,通过多种方法的对比与分析,提出了不同方法估算潜力的优劣性以及准确性,对固碳潜力估算提供了思路。结果表明,不同的区域、不同的类型、不同的目的,所选用的估算方法各不相同,最大值法是一种粗略估算的方法,计算过程简单,但估算结果最不可靠;饱和值法估算结果相对准确,难点在于对饱和水平的确定,饱和值对结果的影响较大,且难以确定是该方法最大的缺点;加权法是最精确的估算方法,估算结果相对最为可靠,但估算过程较为复杂,需要获取的参数最多,且工作量最大。分类定级法估算结果受人为定级影响较大,结果可靠性不高。

This paper discusses the common methods of farmland soil carbon sequestration potential estimation,maximum method,saturated value method,classification and grading method,the weighted method,through a variety of methods of contrast and analysis,put forward the strengths and weaknesses of different methods for estimating the potential and the accuracy,carbon sequestration potential estimate provides a train of thought for the future.The results show that the estimation methods are different for different regions,different types and different purposes.The maximum value method is a rough estimation method with a simple calculation process,but the estimation results are the most unreliable.The estimation result of saturation value method is relatively accurate,but the difficulty lies in the determination of saturation level.The weighted method is the most accurate estimation method,the estimation result is relatively the most reliable,but the estimation process is relatively complex,the parameters to be acquired are the most,and the workload is the largest.The estimation results of classification and grading method are greatly affected by artificial grading,and the reliability of the results is not enough.