摘要
耕地后备资源是耕地的主要补充来源,在耕地占补平衡方面发挥着重要作用。本文以渭北台塬区白水县为研究区,利用GIS空间分析和叠加功能,基于DEM数据、土壤数据及二调基础数据,选取地形坡度、土壤质地、林木郁闭度和耕作便利度4个限制因子,对其他草地耕地后备资源进行分析。结果表明白水县宜耕后备资源总面积2 959.35公顷,占后备资源总面积的13.5%,空间分布不均。研究结果对渭北台塬区同类地区耕地后备资源分析具有一定的参考意义。
Reserved land resources are the main supplementary sources of cultivated land,it plays an important role in the balance of cultivated land.In this paper,take baishui county of Weibei plateau area as a research area.Useing GIS's spatial analysis and overlay capabilities to analysis reserved land resources,based on DEM data,soil data and basic data of the second national land use change survey.Four limiting factors,terrain slope,soil texture,canopy density and tillage convenience were selected.The results showed that the total area of tillage reserve resources in baishui county is 2 959.35 hectares,accounting for 13.5% of the total reserved land resources,and the spatial distribution is relatively uneven.The results can be a reference for the analysis of reserved land resources in the same area of Weibei plateau area.
关键词
耕地后备资源
渭北台塬区
白水县
reserve resources for cultivated land
Weibei plateau area
Baishui county
