新农村建设中土地利用变化及其生态健康评价——以江津郎家村为例

Land Use Change and Ecology Health Assessment in the Construction of a New Socialist Countryside——A Case Study at Langjia Village of Jiangjin

基于郎家村的土地利用变更调查数据和新农村建设总体规划,分析其在新农村建设前后土地利用变化及其生态健康状况。结果表明:新农村建设后,郎家村土地利用结构变化显著,林地、园地、建设用地明显增加,未利用地大大减少;土地利用变化速度较快;土地利用程度进一步提高,处于快速的发展期;不同土地利用结构下,各生态子系统的相对生态价值高低悬殊,对区域生态健康的贡献程度表现不一,总体上处于比较理想的健康状态。

Based on the data of land use alteration and the general plan for the construction of a new countryside in Langjia village, the authors analyze its land use change and ecology health condition during the new rural construction. The results indicate that after the new rural construction, changes in land use structure in Langjia are notable. Forest land, garden land and construction land have increased obviously and unused land has dwindled. The pace of land use change is quite quick; land use degree has further improved. In short, it is at a stage of rapid development. Under different land use structures, there is a great disparity irrelative ecological value of sub--ecosystems, which play various roles in regional ecological health. In general, the situation of ecological health there is satisfactory.