| 魏彦昌,苗鸿,欧阳志云,陈利顶,贵立德.黄土丘陵区四种人工灌木植被生态经济效益分析[J].干旱地区农业研究,2004,(4):158~162 |
| 黄土丘陵区四种人工灌木植被生态经济效益分析 |
| Evaluation of the economic and ecological efficiencies of the four shrubs in hilly areas of the Loess Plateau |
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| DOI：10.7606/j.issn.1000-7601.2004.04.30 |
| 中文关键词: 黄土丘陵区 人工灌木 生态经济效益 |
| 英文关键词:hilly areas of the Loess Plateau shrub Hippohae eco-economic evaluation |
| 基金项目:国家"十五"科技攻关项目(2001BA606A-01) |
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| 中文摘要: |
| 以定西地区常见人工灌木树种柠条、沙棘、红柳、紫穗槐为研究对象,利用生态经济学原理提出其生态经济效益评价的指标体系和评价方法,通过农村社会调查和市场分析并结合影子价格法、机会成本法和影子工程法等方法分别计算四种灌木的生态经济效益。综合效益分析表明,四种灌木树种生态效益大小顺序为沙棘>红柳>柠条>紫穗槐,经济效益大小顺序为紫穗槐>沙棘>红柳>柠条。从总净收益来看,四种灌木生态经济效益总和大小顺序为沙棘>紫穗槐>红柳>柠条。表明沙棘是该区优良的植被恢复灌木树种,适宜在定西地区大面积推广。 |
| 英文摘要: |
| Four shrubberies such as Caragra korshinskii(C), Hippohae rhamnoides L. (H), Tamarix ramosissima(T) and Amorpha fruticosa(A) in Dingxi district were taken as the research subjects. The indicating system and approach of eco-economic efficiency evaluation are put forward in this paper based on the principle of ecological economics. Meantime, through rural social investigation and market analysis as well as shadow price approach, opportunity cost approach and replaced project approach, the eco-economic efficiency of these shrubs are calculated in the paper. The ecological efficiencies of these four shrubs from high to low is H＞T＞C＞A and the economic efficiency of the four shrubs is A＞H＞T＞C. Comprehensive analysis of the ecological efficiencies and economic efficiencies, the order is H＞A＞T＞C. According to researohes, Hippohae is optimal shrubbery for vegetation rehabilitation and is the suitable for extending in Dingxi district. |
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