长春市城郊农田防护林体系生态效益计量

The ecological benefit measurement of farmland shelterbelt in suburb of Changchun

以长春市城郊农田防护林为研究对象,采用替代价值法计量其生态效益的货币价值,结果表明:生态效益计量的内容包括水源涵养、水土保持、农田增产、遏制盐渍化蔓延、调节气候与改善环境、净化空气、吸滞尘埃、降低噪声8个方面,吸滞尘埃、降低噪声效益没有可替代的计算方法,其余6项生态效益的货币价值约为790 807万元.a-1。

The currency value of ecological benefit was measured by replacement method for farmland shelterbelt of Changchan suburb. There were totally 8 items evaluated, including water conservation, soil conservation, increasing farmland production, containment of salinization, adjusting climate and improving environment, air purification, dust absorption and reducing noise. The currency value for ecological benefit of 6 items was 7. 908 07 billion yuan.a^-1 except the dust absorption and reducing noise which could not measurod by replace- ment method.