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农用地转用生态价值评估体系

2012-04-29汪冰孙懿慧李培

湖北农业科学 2012年14期

汪冰 孙懿慧 李培

摘要:引用中国科学院在青藏高原生态价值评估研究中构建的生态指标作为估算农用地转用生态价值的生态指标,在对农田主要作物进一步细分的基础上引入了平衡城市化进程系数作为控制城市化进程速度和加大政策调控力度的因素,重新构建了农用地转用生态价值评估模型。相对以前的评估模型,此模型考虑的生态影响因素更为全面,且能提高政府生态保护力度,评估结果更加准确,从而操作性更强。

关键词:城市化;农用地转用;生态价值;评估体系

中图分类号:F301.3文献标识码:A文章编号:0439-8114(2012)14-2979-04

Farmland Based on Balancing the Process of Urbanization

WANG Bing1,SUN Yi-hui2,LI Pei3

(1. Chinese Academy of Land&Resources Economic Research, Beijing 101149,China; 2. Huazhong Agricultural University, Wuhan 430070,China; 3. China University of Geosciences(Wuhan),Wuhan 430074,China)

Abstract: The ecological influence indices were set up based on the CASecological influence indices, which was created by the research on evaluating the ecological compensation value of Qinghai-Tibet plateau. Based on the further classification of major economic crop and creating balance urbanization process coefficient as a factor controlling the speed of urbanization, a new farmland ecological compensation value evaluation model was designed. Relative to the previous assessment model, this model considered more comprehensive ecological factors, could enhance government efforts in ecological protection, and could make assessment accurate and operational.

Key words: urbanization; farmland conversion; ecological value; assessment system

“十二五”期间,我国经济发展速度加快,资源环境约束也会更加突出。如何在保障可持续发展的基础上,发挥资源的最大效用,促进经济又好又快地发展已成为当前发展的重点问题。农业是我国的基础产业,是发展的根本保障,加强城市化进程中农用地的保护,重视农用地转用的生态价值损失已经愈发凸显出其重要意义。

吕萍等[1]关于农用地转用价值的研究停留在两个层面的指标体系,即经济价值指标和社会保障价值指标,国土资源部发布的《农用地估价规程》(TD/T 1006—2003)[2]也未将生态价值纳入补偿范围。然而,农用地的资源特性使其在利用过程中体现出了明显的外部性,其提供公共物品,如气候调节、水源涵养、休闲娱乐、生物多样性维持等具有正外部性的产品和服务在市场上难以体现[2]。因此,将农用地转用的生态价值评估纳入农用地转用价值评估体系中是非常合理且必要的。……

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