基于小尺度的高寒牧区土地碳排放估算——以甘南州合作市为例

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PDF HTML阅读 XML下载 导出引用 引用提醒 基于小尺度的高寒牧区碳排放估算——以甘南州合作市为例 DOI: 10.5846/stxb201301280176 作者: 作者单位: 西北师范大学地理与环境科学学院 作者简介: 通讯作者: 中图分类号: 基金项目: 国家自然基金地区项目(41261042); 2011年度省属高校基本科研业务费专项资金项目; 2010年度甘肃省高校研究生导师基金项目(1001-22); 西北师范大学青年教师科研能力提升计划-骨干项目(SKQNGG10029) The estimates of carbon emission based on small-scale in alpine pastures: a case study of Hezuo in Gannan Autonomous Prefecture, China Author: Affiliation: Geography and Environmental Science College, Northwest Normal University Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:碳排放是目前国内外研究的热点问题.纵观碳排放计算,关键涉及到两个环节:一是研究尺度的选择,二是评估参数(即碳排放/吸收系数)的确定.高寒牧区还必须充分考虑牲畜碳排放.以甘南州合作市为例,将研究尺度缩小到41个行政村,并采用最新的土地二调数据,对土地利用碳排放和碳汇、生活和牲畜碳排放进行了系统地测算.结果表明: (1)从土地利用的角度考察,合作市总碳排放表征为"碳亏"态势.总碳排放量为24374.82 t/a,其中土地利用碳排放量为4908.21 t/a,牲畜代谢碳排放量为3703.94 t/a,城乡居民生活碳排放量为15762.67 t/a.而碳汇量仅为1949.74 t/a,"碳亏"量为22425.08 t/a.(2)牲畜是高寒牧区呼吸碳排放的主体,其碳排量为3703.94 t/a,其中牛是碳排放的主体,其碳排量占90%以上.(3)城乡居民生活碳排量为15762.67 t/a,城镇明显高于农村,生存型碳排放强度高于发展型碳排放强度.(4)碳排放局分布势面与碳汇分布局势面基本呈反向分布态势,但总的碳排放格局取决于碳排放而非碳汇,空间分布表现为从城区-半农半牧区-纯牧区逐级递减的趋势. Abstract:Carbon emissions are the hot issues of the current domestic and international research. Throughout the calculation of carbon emissions, the key involves two aspects: First, the choice of research scale, second, the definition to assessment parameters (carbon emission/absorption coefficient). The alpine pastoral must also full consider Livestock carbon emissions. The paper carried out a systematic calculation of land use carbon emissions and carbon sinks, which combined characteristics of alpine pastures and the lastest second national survey data of land use,by the way of scale-down to the 41 administrative villages. The results show that: (1) The total carbon emissions characterization show as "carbon deficit" situation. The total carbon emissions24374.82t/a, Land-use carbon emissions 4908.21 t/a, the livestock metabolism carbon emissions 3703.94 t/a, and urban-rural residents living carbon emissions 15762.67 t/a. Carbon sinks only have 1949.74 t/a,the amount of "carbon deficit "reaches to 22425.08 t/a. (2)In the alpine pastoral, livestock is the main body of breathing carbon emissions, carbon emissions for 3703.94 t/a, which the cattle are the main factors of the carbon emissions, more than 90% of its carbon emissions.(3)Urban-rural residents living carbon emissions reaches to 15762.67 t/a, the towns significantly higher than rural areas, This suggests that the survival-type carbon emission intensity is higher than the development of carbon emission intensity.(4)From the city-semi-agricultural and semi-pastoral areas-pure pastoral areas, the spatial pattern of carbon emission shows a decreasing trend. 参考文献 相似文献 引证文献