牡丹江森林生态系统服务功能重要性评价

Evaluation on the Importance of Forest Ecosystem Services in Mudanjiang

为解决牡丹江森林生态系统服务功能对生态管理需求的重要性缺乏全面评估的问题,以黑龙江省牡丹江市森林生态系统为研究对象,参考《生态保护红线划定技术指南》及当地自然地理特征,通过水源涵养、水土保持、防风固沙及生物多样性维护4个生态服务功能评估指标,构建生态系统服务功能重要性评价模型。结果表明,牡丹江市森林覆盖率达67.40%,2000—2020年森林植被净初级生产力(NPP)平均为(730.06±56.64)g/(m^(2)·a),且呈现出极显著的增加趋势;单项评价表明,当地森林生态系统的重要性级别最高的为水土保持功能,综合评价表明,生态系统服务功能“极重要”等级面积最大,占森林总面积的48.74%,集中分布的区域有宁安市西南和穆棱市南部。结果可为当地优化生态保护策略,协调区域发展供科学依据。

In order to solve lack of comprehensive assessment of forest ecosystem service functions on ecological management needs in Mudanjiang City,taking the forest ecosystem of Mudanjiang City in Heilongjiang Province as the research object,referring to the'Technical Guidelines for Delineation of Ecological Protection Red Line'and the local physical and geographical characteristics,a model for evaluating the importance of forest ecosystem service functions was constructed through four ecological service function evaluation indicators:water conservation,soil and water conservation,wind prevention and sand fixation and biodiversity conservation.The results showed that the forest coverage rate in Mudanjiang City reached 67.40%and the average net primary productivity of forest vegetation was(730.06±56.64)g/(m^(2)·a)from^(2)000 to 2020,which showing a significant increasing trend.From the single evaluation index,the importance of soil and water conservation function for the local forest ecosystem was the highest.From the comprehensive evaluation results,the area of extremely important grade of the ecosystem service function was the largest,accounting for 48.74%of the total forest area,which was concentrated in the southwest of Ning'an City and the south of Muling City.The results could provide scientific basis for optimizing local ecological protection strategies and coordinating regional development.