Evaluation Of Land Resource Development In Low-slope Hilly Region

Land resource scarcity is increasingly tensiveowing to rapid population explosion and economic development, especially in Zhejiang province. The development and utilization of the low-slope hilly region is one of the key strategies to ensure the agricultural production.Taking Yuyao city as case study, this study assessed the potential for exploiting land in low-slope hilly region by integrating the technique of remote sensing and GIS in order to provide useful information for decision-makings. Selecting topographical characteristics, vegetation coverage, soil fertility and location conditions as limitation factors, the land utilization potential has been assessed for arable land and constructive land respectively:(1) The low-slope land resource survey was undertaken using the technique of remotesensing and GIS. The results showed that there is a total low-slop hilly area of 23135.13 ha which account for 15.06% of the total land of Yuyao city. This figure exhibits a promising potential for development.(2) The development evaluation of arable land was undertaken using reasonable factors and scientific assessment model. Two methods were compared in which prior consideration for arable and sustainable development were determined to be the assessment goals, respectively. The results indicated that the performance of method with sustainability goal can consist with the future development.(3) The development evaluation of constructive land was undertaken. After considering constructive land requirement, including society, nature, and zoology conditions and so on, building constructive land evaluation factors, choosing AHP to decide the weight of factors, assessing the potential for exploiting of constructive land. The quantitative, systematical and informational suitability assessment for constructive land has initially been achieved.