基于RUSLE模型的吉林省湿地土壤保持服务功能研究

Research on Service Function of Wetland Soil Conservation in Jilin Province Based on RUSLE Model

本文以除水稻田外所有的吉林省湿地类型为对象,利用遥感影像结合湿地调查数据、实测样点数据、相关统计数据,采用通用土壤侵蚀方程(RUSLE)估算湿地土壤保持服务功能。结果表明:吉林省土壤保持总价值为56.03亿元,不同类型湿地土壤保持价值(元,所占百分比)排序为河流湿地(22.68亿元,40.48%)>沼泽湿地(18.29亿元,32.64%)>人工湿地(9.72亿元,17.35%)>湖泊湿地(5.34亿元,9.53%),湿地土壤保持价值白山地区和吉林地区偏高,四平地区和辽源地区偏低。保护和提高吉林省湿地土壤保持功能不仅具有很大的生态效益,还具有极高的经济价值。

In this paper,all wetland types except paddy fields in Jilin province were taken as objects,utilizing remote sensing images combined with wetland survey data,measured sample data and related statistical data,we used the universal soil erosion equation(RUSLE)to estimate wetland soil conservation service functions.The results showed that the total value of soil conservation in Jilin wetland was 5.60×109Yuan.The soil conservation values rank by the type of wetlands as follows(Yuan,proportion in total value in all wetlands in Jilin),river wetlands(2.27×109Yuan,40.48%)>marsh wetlands(1.83×109Yuan,32.64%)>artificial wetland(9.72×108Yuan,17.35%)>lake wetlands(5.34×108Yuan,9.53%),the soil conservation values of wetland was higher in Baishan and Jilin,but lower in Siping and Liaoyuan.Protecting and improving the soil conservation function of wetland in Jilin province has great ecological benefits and economic value.