砒砂岩区1999-2008年沙棘生态工程环境资源价值评价

Value Evaluation for Environmental Resource on Seabuckthorn Ecological Project in Arsenic Sandstone Area During 1999~2008

实施10年（1999-2008年）的中国晋陕蒙砒砂岩区沙棘生态工程，在中国水土流失最为严重的砒砂岩区新增沙棘保存面积1642.83km2。本文选用了7个一级指标、15个二级指标、35个三级指标，评价了这一浩大的沙棘单项生态工程的环境资源价值。估算的工程结束年（2008年）沙棘环境资源价值为100.17亿元，为工程总投资2.7亿元的37.1倍。文中建议，保育土壤、涵养水源、防风固沙等具有外部经济性的指标，其价值可以通过国家制定有关政策、征收有关税收来实现；而固碳制氧目前已是国际社会关注的一个热点，可通过开展国际碳贸易来得到经济效益。

China seabuckthorn ecological project has been implemented for a decade （from 1999 to 2008） with an increasing seabuckthorn area of 1642.83km2 in the arsenic Sandstone Areas of Shanxi, Shaanxi and Inner Mongolia-the most serious soil erosion area in China. The vast seabuckthorn Project ’s value in environmental resource is assessed via 7 indicators on first-level, 15 indicators on second-ary level and 35 indicators on third level in this research. By the end of 2008, the seabuckthorn envi-ronmental resource value is about 10.017 billion RMB Yuan, which equals 37.1 times of the project’s total investment of 0.27 billion RMB Yuan. It is proposed in paper that the external economical values such as soil and water conservation, windbreak and sand-fixation can be realized through relative na-tional policies and taxes; carbon-fixation and oxygen-producing value can be achieved through interna-tional carbon trade.