基于自然保护地空间管控分区的生态服务价值精细化评估模型

A Refined Assessment Model of Ecological Service Value Based on Spatial Control Zoning of Protected Areas

生态服务价值评估被广泛应用于自然保护地的规划管理中,探索与生态空间管控相关联的精细化评估方法具有重要意义。针对常规当量法生态价值评估模型计算方法复杂、结果粗略的不足,以南岭国家公园为例进行方法优化和精细化评估模型建构:基于生态空间管控分区,以森林质量关键性评价指标——蓄积量为链接,通过关联性分析识别蓄积量与生态服务价值、管控单元得分之间的回归关系,构建与管控单元相结合的生态服务价值精细化评估模型。通过对比验证,2种模型计算结果高度一致,占总面积97.81%的小班差值低于5%;在差值大于10%的区间中,84%的小班面积小于1 hm2,表明2种模型的差值主要集中在小面积区域,而研究提出的模型弥补了当量法小面积价值趋于0的不足,结果更准确。

Ecological service value assessment has been widely used in the planning and management of protected areas,and it is of great significance to explore the refined assessment methods related to ecological space management and control.The conventional equivalent method to calculate the ecological service value assessment model has shortcomings,such as complicated calculation processes and rough results.Taking Nanling National Park as an example,the method optimization and refined assessment model construction were carried out.Based on the ecological space management and control unit,the regression relationship between the forest stock and the value of ecological services and the scores of management and control units was identified by the correlation analysis method with the key evaluation index of forest quality--stand volume as the link,so as to build a refined assessment model of ecological service value combined with the management and control units.Through comparison and verification,the calculation results of the two models are highly consistent,accounting for 97.81%of the total area of the slight class difference is less than 5%.In the interval where the difference is more significant than 10%,84%of the small class area is less than 1 hm2,which indicates that the difference between the two models is mainly concentrated in the small area class.The proposed model makes up for the deficiency of the equivalent method in that the value of ecological services of small area units tends to 0 and makes the calculation result more accurate.