乡村旅游地碳汇资源的构成、特征与碳汇价值研究

Composition,Characteristics and Value of Carbon Sink in Rural Tourist Places

乡村旅游地位于广阔的乡村地区,蕴藏着十分丰富的碳汇资源。通过文献分析法与实地调查法,研究乡村旅游地碳汇机理问题。乡村旅游地自然系统与陆地生态系统具有较强的耦合关系,乡村旅游地碳汇资源是乡村系统中能够清除、吸收、贮存大气CO_2的陆地生态区域,包括农田耕地系统、乡村林地系统、乡村湿地系统与乡村草地系统,具有类型多样、数量丰富、品质有异、动态变化等特征。乡村旅游地自然系统中的绿色植被从大气中获取CO_2,经由光合作用形成有机物质,部分通过植物凋落分解转化成为土壤碳,其碳汇价值由既密切联系又有区别的碳吸收价值与碳储存价值组成。定量地估算乡村旅游地碳汇水平以及基于碳源/碳汇估算的乡村旅游地碳中和实现路径等问题值得进一步研究。

Rural tourist places, most located in the vast land of rural areas, are often rich in carbon sink. This paper discusses the issue of carbon sequestration mechanism in these places with the methods of literature analysis and field survey. The results indicate that there is a strong coupling relationship between natural system and terrestrial ecosystem of rural tourist places. Carbon sink is a land ecoregion in rural system capable of cleaning, absorbing and storing CO2. It includes farmland system, rural forest system, rural wetland system and rural grass system, and is characterized by varied types, large number, excellent quality, dynamic change, etc. Green vegetation in natural system of rural tourist places absorbs CO2 from the atmosphere, and turns it into organic compounds through photosynthesis, and some of these compounds turn into soil carbon after they fall onto ground and decompose. The value of carbon sink lies in carbon absorption and carbon storage, which are closely related to each other but at meantime in differences. Quantitative evaluation of the value of carbon sink, the carbon-neutral approach according to carbon source/carbon sink estimation and some other issues in rural tourist places are worthy of further study.