基于生态系统服务供需的陕西省土地整治空间分区

Land Consolidation Zoning in Shaanxi Province based on the Supply and Demand of Ecosystem Services

研究目的:根据生态系统服务供给和需求的空间差异及平衡状况进行陕西省土地整治空间格局的划分,形成基于生态系统服务供需匹配的土地整治分区方案。研究方法:采用价值当量法核算生态系统服务的供给量,选取社会经济指标定量化表征生态系统服务的需求量,依据生态系统服务的供需匹配类型得到土地整治分区的结果。研究结果:按照生态系统服务供给和需求的空间差异及匹配类型,采用"地区+典型地貌类型"的命名方法将全省划分为6大土地整治区。其中,北部风沙滩地土地整治区和关中平原土地整治区属于"低供给—高需求"类型;黄土丘陵沟壑土地整治区属于"低供给—低需求"类型;黄土台塬土地整治区属于"高供给—高需求"类型;秦岭山地土地整治区和汉中—安康盆地土地整治区属于"高供给—低需求"类型。根据各种类型区的特点明确了各自的土地整治方向。研究结论:陕西省不同地区生态系统服务的供需匹配状况存在较大差异,应该在明确不同匹配类型区域土地整治重点方向的基础上实施差异化整治措施,进一步提高土地整治的效益。

The purpose of the paper is to divide the spatial region of land consolidation and to form a land consolidation zoning scheme by studying the spatial differences and the equilibrium of ecosystem service supply and demand in different regions of Shaanxi Province.The revised value method is used to calculate the supply of ecosystem services in the study area,and the socio-economic indicators are selected to quantitatively characterize the demand for ecosystem services to carry out the land consolidation zoning scheme.Based on the spatial differences,the matching types of ecosystem service supply and demand and the “region + typical landform type” naming method,the province is divided into 6 major land consolidation areas.The Northern Wind Beach Area Land Consolidation Area and the Guanzhong Plain Land Consolidation Area are the type of “low supply-high demand”;the Loess Hilly and Gully Land Consolidation Area belongs to the “low supply-low demand” type;Loess Plateau Land Consolidation Area belongs to “high supply-high demand” type;Qinling Mountain Land Consolidation Area and Hanzhong-Ankang Basin Land Consolidation Area belong to “high supply-low demand” type.Combining the characteristics of each type,the land consolidation directions of various land consolidation were proposed.In conclusion,there are great differences in the matching of supply and demand of ecosystem services in different regions of Shaanxi Province,and differentiated land consolidation measures should be identified on the basis of clarifying the key directions of different matching types to further improve the benefits of land consolidation.