深圳市不同土地利用类型土壤有机碳与密度特征

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土壤碳库变化对于全球温室效应、全球碳循环有重大的影响.城市土壤是全球碳循环的重要环节,城市化对城市土壤有机碳库的影响不容忽视.在野外调查和样品分析的基础上,对深圳市0～10、11～20、21～30cm深度不同土地利用类型土壤有机碳碳含量、密度及分布特征进行实测统计分析.结果表明:(1)深圳市不同土地利用类型0～30cm土壤有机碳含量均值介于0.72～40.52g·kg^-1.土壤有机碳密度均值介于0.27～13.36kg·m^-2.(2)土壤有机碳含量与密度随土层深度的增加而降低.0～10cm土壤有机碳含量均值介于1.56～71.88g·kg^-1,有机碳密度均值介于0.18～7.05kg·m^-2之间;11～20cm土壤有机碳含量均值介于0.59～36.79g·kg^-1,土壤有机碳密度均值介于0.09～4.5kg·m^-2,21～30cm土壤有机碳含量均值介于0～12.90g·kg^-1,土壤有机碳密度均值介于0～1.78kg·m^-2.(3)林地土壤有机碳含量和密度随着海拔高度的升高而降低,城市建设用地与闲置土地土壤有机碳含量与密度很低.(4)土地利用方式的变化可以改变有机碳在土壤中的贮存与分布.

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	刘伟玲
	张林波
	叶有华
	邹剑锋
	王一哲

关键词 ：深圳市, 土地利用类型:土壤:有机碳含量:有机碳密度

Abstract：

The change of soil carbon pool has a significant impact on the global greenhouse effect and carbon cycle.Urban soil is an important part of the global carbon cycle.The impact of urbanization on soil organic carbon pool needs to be examined.Based on the field investigation and samples in Shenzhen City,soil organic carbon content,density and distribution were analyzed.The soil depth of samples from different land use types were 0～10,11～20 and 21～30 cm.The results are as follows.(1) The average soil organic carbon content was 0.72～40.52 g·kg^-1,and average soil organic carbon density was 0.27～13.36 kg·m^-2 in the soil depth of 0～30 cm.(2) The soil organic carbon content and density decreased with the increase of soil depth.In the soil depth of 0～10 cm,the average soil organic carbon content ranged between 1.56 to 71.88 g·kg^-1,and the average organic carbon density ranged between 0.18 to 7.05 kg·m^-2.In the soil depth of 11～20 cm,the average soil organic carbon content ranged between 0.59 to 36.79 g·kg^-1,and the average organic carbon density ranged between 0.09 to 4.5 kg·m^-2.In the soil depth of 21～30 cm,the average soil organic carbon content ranged between 0 to 12.90 g·kg^-1,and the average organic carbon density ranged between 0 to 1.78 kg·m^-2.(3) The soil organic carbon content and density in forest land decreased with increasing altitude,and those in urban construction land and unused land were very low.(4) The land use change could affect the storage and distribution of soil organic carbon.

Key words： Shenzhen City land use types soil content of soil organic carbon density of soil organic carbon

收稿日期: 2011-10-25

Q948

基金资助:环保公益性行业科研专项项目(2011467030);环保公益性行业科研专项项目(2009467020)

引用本文:

刘伟玲1*, 张林波1, 叶有华2, 邹剑锋2, 王一哲1, 齐月1. 深圳市不同土地利用类型土壤有机碳与密度特征[J]. , 2011, 30(5): 486-492.
LIU Wei-ling1, ZHANG Lin-bo1, YE You-hua2, ZOU Jian-feng2, WANG Yi-zhe1, QI Yue1. Content and density of soil organic carbon under different land use types in Shenzhen. , 2011, 30(5): 486-492.

链接本文:

http://www.ecolsci.com/CN/Y2011/V30/I5/486

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