HUANG Cong-de,ZHANG Guo-qing,TANG Xiao,et al.Study on Soil Organic Carbon Densities of Artificial Pinus massoniana in Sichuan Province[J].Research of Soil and Water Conservation,2009,16(02):46-49,55.
四川省马尾松人工林土壤有机碳密度研究
- Title:
- Study on Soil Organic Carbon Densities of Artificial Pinus massoniana in Sichuan Province
- 分类号:
- S714
- 摘要:
- 人工林是目前陆地碳汇增长最主要的媒介之一.基于森林土壤碳清查方法对四川省马尾松人工林土壤有机碳密度进行了研究.结果表明:马尾松人工林土壤有机碳含量和碳密度均随土壤深度的增加而降低,且碳密度的区域性差异较明显,表现为盆周山地区(150.9±13.3)Mg/hm2>盆地丘陵区(101.4±6.2)Mg/hm2>川西平原区(87.4±5.7)Mg/hm2;马尾松人工林土壤有机碳密度与降水量呈显著正相关关系,与气温呈显著负相关关系;在盆地丘陵区,抚育间伐对马尾松人工林土壤碳密度的影响显著,间伐后林分土壤碳密度为(125.8±9.9)Mg/hm2,比未间伐林分高54.0%(81.7±9.4)Mg/hm2.人工林经营对增大森林土壤碳汇功能具有积极的作用.
- Abstract:
- Artificial forest is considered as an important approach to enhance terrestrial carbon sink.Soil organic carbon content and density in artificial pine(Pinus massoniana) forest was investigated in Sichuan,employing the method of forest soil carbon inventory.The content and density of soil organic carbon in the artificial forest both decreased with soil depth,and the soil organic carbon density carried with the subregion,showed the ranked order of low-mountain area(150.9±13.3) Mg/hm2 >hilly area(101.4±6.2) Mg/hm2 >western plain area(87.4±5.7) Mg/hm2.Soil organic carbon density was positively and significantly correlated with precipitation and negatively with temperature,respectively.Soil organic carbon density varied also with different management measures and reasonable thinning could increase soil carbon density from(81.7±9.4) Mg/hm2 to(125.8±9.9) Mg/hm2 in hilly area.The management of artificial forest would play a positive role in increasing the forest soil carbon sink and mitigating the global change.
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备注/Memo
收稿日期:2008-11-12;改回日期:。
基金项目:国家“十一五”科技支撑项目(2006BAC01A11);四川省科技公关项目(05SG023-009)
作者简介:黄从德(1969- ),男,四川内江人,博士生,主要从事林业生态工程研究.E-mail:lyyxq100@yahoo.com.cn