燕山典型流域两种造林树种生态系统碳储量及固碳潜力研究  

Carbon stocks and carbon sequestration potentials in ecosystems of two afforestation species in typical watershed of Yanshan mountains

作　　者：郭月峰[1] 姚云峰[1] 秦富仓[1] 祁伟 

机构地区：[1]内蒙古农业大学生态环境学院,内蒙古呼和浩特010018 [2]内蒙古水利水电勘测设计院,内蒙古呼和浩特010020

出　　处：《生态环境学报》2013年第10期1665-1670,共6页Ecology and Environmental Sciences

基　　金：内蒙古应用研究与开发计划项目"农林牧耦合生态系统固碳关键技术"(20110732);中国科学院战略性先导科技专项(XDA05060602)

摘　　要：选择燕山典型流域6个林龄序列的小叶杨(Populus simonii)和5个林龄序列的山杏(Prunus sibirica)主要造林树种为研究对象,利用时间替代空间样地测量法量化退牧还林后生物量碳储量、凋落物碳储量和土壤碳储量及生态系统碳储量的变化规律,同时以各组成碳库-林龄序列中的最大碳储量之和作为生态系统饱和碳储量,以未退牧的天然草地生态系统碳储量作为初始植被类型的碳储量,分析总结了退牧还林对生态系统碳储量和碳循环的影响。结果表明,退牧还林后生态系统的生物量碳储量、凋落物碳储量基本随退牧年限的增加而增加,土壤碳储量随退牧年限的增加呈现先减小后增加的趋势。在没有人为干扰的情况下,9、15、18、22及29 a生小叶杨林的生态系统碳储量分别为7 147.45、7 461.67、7 509.895、8 468.375及8 247.85g·m-2,9、15、18、22及26 a生山杏林的生态系统碳储量分别为6 695.44、6 700.82、8 011.86、8 001.92及7 981.92 g·m-2;9、15、18、22、29及36 a生小叶杨林的生态系统固碳潜力分别为757.08、1 071.3、1 119.53、2 078.01、1 857.48及1 312.21g·m-2,9、15、18、22及26 a生山杏林的生态系统固碳潜力分别为310.45、1 621.49、1 611.55、1 591.55及757.08 g·m-2。长期来看,研究区退牧还林对提高生态系统碳汇能力是可观的、积极的。研究结果对提高造林对碳汇影响的估测能力提供数据支持,也为政府参与国际全球气候变化的谈判提供一个很好的案例研究和科学根据。In this paper, the main afforestation tree species of populus simonii from 6 forest age sequences and prunus sibirica from 5 forest age sequences in typical watershed of Yanshan Mountains are selected as the research object. By using the spatial sequence instead of time successional sequence sample plot measurement method, the change law of biomass carbon stocks, litter carbon stocks and soil carbon stocks after returning husbandry to forestry has been quantified. Meanwhile, with taking the sum of largest carbon stocks in carbon pool-forest age sequence as the ecosystem carbon capacity, as well as the carbon stocks of the unreturned natural grassland ecosystem as the carbon stocks of initial vegetation types, the impact of returning husbandry to forestry on the ecosystem carbon stocks and carbon cycle is analyzed and summarized. The results show that after returning husbandry to forestry, the ecosystem biomass carbon stocks and litter carbon stocks basically increase with the returning years increasing;while soil carbon stocks show a decrease-increase trend in this process. Without human disturbance, the carbon stocks in 9, 15, 18, 22, and 29-year-old Populus simonii forests were 7 147.45, 7 461.67, 7 509.90, 8 468.38, and 8 247.85 g·m^-2, respectively;the carbon stocks in 9, 15, 18, 22, and 26-year-old Prunus sibirica forests were 6 695.44, 6 700.82, 8 011.86, 8 001.92, and 7 981.92 g·m^-2, respectively, and the ecosystem carbon sequestration potentials in 9, 15, 18, 22, 29, and 36-year-old Populus simonii forests were 757.08, 1 071.3, 1 119.53, 2 078.01, 1 857.48, and 1 312.21 g·m^-2 respectively; the ecosystem carbon sequestration potentials in 9, 15, 18, 22, and 26-year-old Prunus sibirica forests were 310.45, 1 621.49, 1 611.55, 1 591.55, and 757.08 g·m^-2, respectively. In the long run, the returning husbandry to forestry in the study area is able to significantly and positively improve the ecosystem carbon sequestration capacity. The study results provide data support to the improvement of estimation c

关 键 词：典型流域 生态系统碳储量 固碳潜力 小叶杨 山杏 

分 类 号：S718.55[农业科学—林学]