基于碳循环的黄淮海平原耕地固碳功能研究

发布时间：2018-01-14 05:01

本文关键词：基于碳循环的黄淮海平原耕地固碳功能研究　出处：《资源科学》2016年06期 　论文类型：期刊论文

【摘要】：耕地固碳作为陆地主要生态系统固碳的有效补充,越来越引起学术界的广泛关注。但是,目前耕地固碳功能研究多从生态学角度研究耕地植被、土壤等碳吸收、碳释放以及将耕地看作纯自然生态系统研究系统碳平衡,缺乏从土地利用和管理学科角度对耕地固碳功能进行系统阐述和研究。黄淮海平原作为中国重要的粮食主产区,区内耕地面积大,耕地利用模式典型。本文以黄淮海平原为研究区,从耕地利用系统的角度出发,基于整个系统碳循环过程,构建了黄淮海平原耕地利用系统固碳功能研究基本框架,并基于生态学角度陆地生态系统固碳相关研究成果,从耕地固碳能力、固碳效率和固碳优势度三个方面对黄淮海平原耕地固碳功能进行了评价。研究结果表明:耕地利用过程中的耕地固碳功能认识,应从自然固碳能力、理想固碳能力、现实固碳能力和区域固碳能力4个层次展开,黄淮海平原耕地固碳能力在各个层级上均表现出正向性;此外,黄淮海平原耕地平均固碳效率为2.5,固碳优势度达到0.85,黄淮海平原耕地固碳功能在本区域具有不可忽视以及区域内其他生态系统不可替代的重要作用,在本区域应该作为耕地的重要功能进行显化。本研究不仅可为耕地生态功能理论研究提供新思考点,也为提升耕地的生态效益、缓解气候变化以及耕地生态补偿方面研究提供了参考和支撑。
[Abstract]:Farmland carbon sequestration is an effective supplement to the main terrestrial ecosystem carbon sequestration, more and more attention in academic circles. However, the current farmland carbon sequestration research from the angle of ecology of cultivated land vegetation, soil carbon sequestration, carbon release and carbon balance of cultivated land will be regarded as pure natural ecological system from the Perspective of land use, the lack of and management of carbon sequestration function of farmland system described and studied. In Huanghuaihai Plain as an important grain producing area Chinese, the area of arable land area, land use pattern. The typical research area in Huang Huai Hai Plain, from the perspective of land use system point of view, the carbon cycle process of the whole system is based on the construction of cultivated land the system of carbon sequestration research framework, and based on the perspective of ecology of terrestrial ecosystem carbon sequestration research results from the carbon sequestration capacity of arable land, carbon sequestration efficiency and Carbon sequestration advantages of the three aspects of the evaluation of the carbon sequestration function of cultivated land. The results show that: the cultivated land use of arable land in the process of carbon sequestration, from natural carbon sequestration, carbon sequestration capacity, launched 4 levels of carbon sequestration capacity and regional realities, the carbon sequestration capacity of cultivated land at every level are positive; in addition, cultivated land average carbon sequestration efficiency was 2.5, carbon dominance reached 0.85, carbon sequestration of cultivated land has an important role can not be ignored and other regional ecological system can not be replaced in this area, in this region should be an important function of cultivated land manifest. This research not only provides a new thinking to the study of the theory of cultivated land ecological function, but also for the improvement of ecological benefit of cultivated land, climate change mitigation and land ecological compensation research provides Reference and support.

【作者单位】：中国农业大学资源与环境学院;国土资源部农用地质量与监控重点实验室;泰安市国土资源局;
【基金】：科技部国家科技支撑计划项目(2015BAD06B01)
【分类号】：S181;F323.211
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