油茶林分生态效益的计量分析

Quantitative analysis on ecological benefit of Camellia oleifera stand

采用计量方法对油茶生态效益进行分析研究,能为油茶林分的生态经营提供参考依据。根据湖南省桃源县农业局、水利局等单位提供的统计资料和实地调查的结果,采用效益物替代法和货币置换法对湖南省桃源县油茶林分的生态效益进行了计量分析。结果表明:该县油茶林分的生态效益总计为1.44×105万元;其保持水土的效益最大,约占88%,其中保肥效益为99 681.17万元,占70%,固土效益为26 593.14万元,占18%;涵养水源效益占10%,制造氧气、固定二氧化碳两部分效益各占1%左右。其生态效益与经济效益的比值为2.95∶1,略小于覃正亚等人的研究结果。

In order to provide the basis for ecological management of Camellia oleifera stand, ecological benefit of C. oleifera stand in Taoyuan County were analyzed by using the methods of benefit matter substitution and monetary replacement. Some data was provided by Agriculture Bureau, Water Conservancy Bureau and other government departments, and some was the results of field survey. The results showed that total ecological benefit of C. oleifera stand was 1.44~103 million Yuan. The soil and water conservation benefit was the greatest, accounted for about 88%, in which the fertilizer conservation benefit was 996.811 7 million Yuan, accounted for 70%, and the soil-fixation benefit was the rest. The water conservation benefit accounted for 10%, both oxygen production and carbon dioxide fixation benefits were accounted for about I%. The ratio of ecological benefit to economic benefit was 2.95 ： 1.