根据民乐县土地利用变更和二调数据,运用灰色预测法和平均增长率法对民乐县地类规模的规划面积进行预测.利用农田生态系统生物量因子和生态服务价值当量因子,进行民乐县土地利用结构和生态服务价值分析.研究表明:民乐县土地利用结构多样性指数和均匀度指数增加而优势度指数降低,土地利用趋于多样化和均匀化;各地类中林地生态服务价值贡献最大,土地利用生态服务价值总体呈增加趋势;土地利用结构与土地利用生态服务价值呈线性相关,通过增加林地、园地等生态用地面积,提高土地利用集约度;土地利用结构的调整有利于促进土地利用的多样化和均匀化,进而增加生态系统稳定性和提高生态系统服务价值的经济价值,指导土地结构调整和合理利用土地.
Based on land use change data and the second land use survey data, the grey prediction method and average growth rate method were applied to all types of land use in MiMe County's planning area, in order to carry a forecast. Replying farmland ecosystem biomass factors and revising formula correction factor coefficient of ecological service value equivalency factors, we analyzed the response relationship of land use structure and ecosystem services value change. The results showed that land use structure diversity index and evenness index were increasing while the dominance index became lower; land use itself was more diversified and homogenized. The forest constitued the greatest contribution value of ecosystem services, while land use value of ecosystem services was in a overall increasing trend. Land use structure and land use ecosystem service value were linearly correlated. By increasing the area of forest, garden and other ecological land and by improving land use intensity, the land use structure adjustment was conducive to promoting the diversification of land use and homogenization. This can increase the stability of ecosystems and improve the economic value of ecosystem services and, at the same time, djust the land use structure and guide more rational land use.