基于GIS的普定县土壤有机碳密度及碳储量研究

基于普定县第二次土壤普查的土壤剖面数据,结合普定县土壤图、土地利用现状图、土壤容重数据和土壤有机质含量数据,在GIS技术的支持下,对普定县土壤有机碳密度和储量进行了估算和分析。结果表明普定县碳储量为1 326.75×104t,平均碳密度为12.29kg/m2。研究区碳密度分布规律是南低北高,土壤碳密度主要在0～40 kg/m2之间,在10～20 kg/m2之间时达到面积比值最大值。随高程和坡度的增加,研究区碳储量的分布情况呈现出一种类似正态分布的曲线,总体而言,普定县土壤有机碳储量相对贫乏。

Soil organic carbon density and carbon storage of Pu-Ding based on GIS

Based on the soil profile data of the second soil census in Pu - Ding,with the support of GIS, combine with Pu - Ding soil map and land use map, soil bulk data and soil organic matter data, estimated and analyzed soil organic carbon density and the reserves of Pu - Ding . The results show that Pu - Ding carbon storage is 1326.75 ＊ 104 t, the average carbon density is 12.29 kg/m2. The carbon density of the South is lower than the north in the study area, the soil carbon density mainly be- tween 0 to 40 kg/m2 , between 10 - 20 kg/m2 to achieve the maximum ratio of the area. With the in- crease of elevation and slope, the distribution of carbon storage in the study area show a similar normal distribution curve, in general, the soil organic carbon is relatively poor in the Pu -Ding.