突泉县国家级公益林生态效益分析

Analysis of Ecological Benefits of National Public Welfare Forests in Tuquan County

文章以突泉县国家级公益林为研究对象,将研究区域按不同林地类型划分为针叶林、阔叶林和灌木林,计算2020年突泉县国家级公益林地固土保肥、涵养水源、固碳释氧、防风固沙四种生态服务功能的物质量和价值量,并与2009年进行对比,进而分析公益林生态效益变化情况。结果表明:2020年国家级公益林生态效益价值达96.01亿元,较2009年增长19.76亿元;从不同林分类型生态效益价值看,灌木林(53.45亿元)>阔叶林(41.85亿元)>针叶林(0.72亿元);从生态服务功能类型看,固土保肥价值(88.56亿元)>涵养水源价值(3.30亿元)>固碳释氧价值(3.02亿元)>防风固沙价值(1.13亿元)。突泉县国家级公益林充分发挥多种防护功能,进一步改善了区域人居环境。

This paper takes the national public welfare forests in Tuquan County as the research subject and divides the study area into different forest types,including coniferous forests,broadleaved forests,and shrub forests.The paper calculates the mass and value of four ecological service functions of the national public welfare forest land in Tuquan County in 2020,namely soil conservation and fertilizer retention,water source protection,carbon sequestration and oxygen release,and windbreak and sand fixation,and compares them with those in 2009 to analyze the changes in the ecological benefits of the public welfare forests.The results show that the ecological benefit value of the national public welfare forests in 2020 reached 9.601 billion yuan,an increase of 1.976 billion yuan compared to 2009.Looking at the ecological benefit value of different forest types,the order is shrub forests(5.345 billion yuan)>broad-leaved forests(4.185 billion yuan)>coniferous forests(0.072 billion yuan).In terms of types of ecological service functions,the value of soil conservation and fertilizer retention(8.856 billion yuan)>water source protection(0.330 billion yuan)>carbon sequestration and oxygen release(0.302 billion yuan)>windbreak and sand fixation(0.113 billion yuan).The national public welfare forests in Tuquan County have fully exerted multiple protective functions,further improving the regional living environment.