Evaluation of ecological forest ecosystem services in Zhenhai District, Ningbo
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摘要: 通过在宁波市镇海区的4条生态公益林带设置9个样点,对林带内外的微生物含量、温湿度、负氧离子个数和噪音值进行实地测定,并采集植物叶片样本,分析滞尘量和硫、氯、氟含量.基于以上数据,采用影子工程法和替代费用法等方法对宁波市镇海区生态公益林生态系统服务价值进行评估.结果显示,2008年镇海区生态公益林生态系统服务总价值为16 527.61万元;各项功能的价值量依次为净化大气环境>涵养水源>调节温度>固碳释氧>保护生物多样性>活立木蓄积>固定土壤.并提出了两个影响城市生态公益林生态服务价值评估的因素,分别为:评估对象的植物配置情况、评估体系与方法的选择.Abstract: The concentrations of microbe content, negative-ion and the temperatures, humidities, noises were monitored in 9 sample points in Zhenhai ecological forest belts, combined with the quantitive analysis of pollutants contents and dust accumulation abilities in the leaf samples. Based on these data and by applying the methods of substitution of the expenses, and shadow project, the ecological services of forest ecosystem in Zhenhai District were evaluated. The results showed that in 2008, the total value of ecological forest ecosystem services in Zhenhai District was 1.652 8108 yuan. The sequence of the service function values was as follows: atmosphere environmental purification>water storage>temperature regulation>C fixation and O2 release>biodiversity conservation>provision of forest products>soil conservation soil conservation. Two factors which influence the evaluation of the ecological forest ecosystem services were proposed, including the characteristics of plant communities and the selection of assessment indexes and methods.
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Key words:
- ecological forest /
- forest ecosystem /
- ecosystem services value /
- evaluation
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