矿区耕地生态位变化研究——以陕西省榆林市为例

Research on Farmland Ecological Niche Change in Mining Areas: With Yulin City,Shaanxi Province as an Example

矿产资源的开发引起土地破坏、土地利用结构发生变化、人地矛盾突出,对耕地保护产生了巨大的压力。以生态位理论为指导,以榆林市为研究对象,建立矿区耕地生态位模型,利用关联分析方法,研究矿区的发展对区域耕地资源的影响。结果表明:在社会经济发展水平较低的时候,耕地在当地自然和社会经济层面起着主导作用,耕地生态位值较大,耕地保护压力较小;随着经济的发展,耕地的生态位值也呈现下降趋势,耕地保护压力较大。

Exploitation of mineral resources has caused destruction of land and posed a great pressure on farmland protection because of the change of land use structure and the evident contradiction between population and land resources. Guided by the ecological niche theory and taking Yulin City as the object of research, this paper studies the effect of mining development on farmland resource by building the model of farmland ecological niche in mining areas and employing the method of correlation analysis. The results show that when the social and economic development level is relatively low, farmland plays a dominant role in local nature and social economy, the value of farmland niche being larger and the pressure on farmland protection smaller. With the economic development, the value of farmland ecological niche assumes a downward trend, creating greater pressure on the protection of farmland.