地理科学 ›› 2014, Vol. 34 ›› Issue (10): 1247-1253.doi: 10.13249/j.cnki.sgs.2014.010.1247

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广西土壤有机碳储量估算及与全国部分省区的比较研究

陈曦1,2,3()   

  1. 1.北京大学城市与环境学院,北京100871
    2.北京大学城市规划与设计学院,广东 深圳 518055
    3.深圳市循环经济重点实验室,广东 深圳 518055
  • 收稿日期:2013-10-16 修回日期:2014-03-24 出版日期:2014-10-10 发布日期:2014-10-10
  • 作者简介:

    作者简介:陈 曦(1986-),女,山西太原人,博士研究生,主要研究方向为资源管理与区域开发。E-mail:chenxcn@pku.edu.cn

  • 基金资助:
    国家科技支撑课题(2012BAJ22B05)资助

Estimation of Soil Organic Carbon Reserves in Guangxi and Comparion Study with Some Provinces in China

Xi CHEN1,2,3()   

  1. 1. College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
    2. School of Urban Planning and Design, Peking University, Shenzhen, Guangdong, 518055, China
    3.The Shenzhen Key Laboratory for Cyclic Economy, Shenzhen, Guangdong, 518055, China
  • Received:2013-10-16 Revised:2014-03-24 Online:2014-10-10 Published:2014-10-10

摘要:

以广西第二次土壤普查的土壤剖面数据为基础,结合广西1:50万的土壤图以及相关的地形DEM图和行政区划图,在GIS平台下对广西表层土壤有机碳密度和储量进行了估算,对不同土壤类型、不同区域的土壤有机碳分布特征进行了分析,并将结果与全国其他省市地区的研究成果进行了对比。结果表明:广西表层土壤有机碳密度分布不均,呈现桂北高,桂南低的空间分布特点;中等海拔地区高,低海拔地区低;黄壤高,砖红壤低。有机碳密度均值为3.33 kg/m2,低于全国平均水平4.70 kg/m2;表层土壤有机碳库储量为6.42×1011kg,占全国表层土壤有机碳储量的1.5%。

关键词: 土壤有机碳密度, 土壤有机碳储量, 土壤有机碳丰度指数, 储量估算, 空间分布, 广西

Abstract:

The main purpose of this research is to estimate the soil organic carbon density and reserves of top soil in Guangxi, China. With the combined analysis of the soil profile data of the second soil survey, the soil map (1∶500 000) and digital map, the author unveiled the carbon density and reserves’ distribution features of different soil types and areas in Guangxi, and furthermore, made comparison to the data in other provinces in China. The results show that the soil organic carbon density varies significantly at different type of topsoil. The carbon density in soil is comparatively higher in the north of Guangxi than it in the south. And it is also higher in high latitude areas and yellow soil, while it is lower in low latitude areas and latosol. In addition, the whole soil organic carbon reverses of the topsoil in Guangxi is 6.42×1011kg, as much as the 1.5% of the nationwide reverses in China. And the average value of the soil organic carbon density, 3.33 kg/m2, is lower than the national average level, 4.70 kg/m2.

Key words: soil organic carbon density, soil organic carbon reserves, abundance index of soil organic carbon, reserves estimation, spatial distribution, Guangxi

中图分类号: 

  • K903