广西桉树人工林生态效益分析与评价

Ecological Benefit Analysis and Evaluation of Eucalyptus robusta Plantations in Guangxi

[目的]评价广西桉树人工林生态效益,筛选出能够促进桉树发展的主要技术指标。[方法]通过调查分析广西8个代表性地区的桉树人工林经营发展现状,采用文献查找借阅、实证研究、定量化研究与定性化研究相结合的方法,对广西桉树人工林发展进行生态效益评价。[结果]桉树人工林单项生态服务价值量从小到大依次为净化空气价值、水源涵养价值、固碳释氧价。生态健康价值=固碳释氧价值+水源涵养价值+净化空气价值。广西各地区桉树人工林生态健康价值平均为16.51万元/(hm2·a)。[结论]该研究可为更好地发展广西地区桉树人工林生态效益提供理论依据。

[Objective]To evaluate the ecological benefits of Eucalyptus robusta plantations in Guangxi and to screen out the main technical indexes for promoting the development of Eucalyptus robusta. [Method]By investigating and analyzing the present situation of Eucalyptus robusta plantation management in 8 representative areas of Guangxi,using the methods of literature search,borrowing,empirical research,quantitative research and qualitative research,the ecological benefits of Eucalyptus robusta plantations in Guangxi were evaluated. [Result]The value of individual ecological services of Eucalyptus robusta plantations from small to large followed by the value of clean air,water conservation value,carbon fixation and oxygen release. Ecological health value = carbon fixation and oxygen release value ＋ water conservation value ＋ clean air value. The average ecological health value of Eucalyptus robusta plantations in different areas of Guangxi was 165. 1 thousand yuan/（ hm2·a）.[Conclusion]The study can provide a theoretical basis for better ecological benefits of Eucalyptus robusta plantations in Guangxi.