耕地“非粮化”特征识别与优化调控研究———以广西百色市右江区为例.

Accurately identifying the spatial characteristics of “non-grain” cultivated land and proposing control measures have positive significance for accurate control of “non-grain” cultivated land. Taking Youjiang District as the research area, this paper identified the spatial characteristics of “non-grain” cultivated land in Youjiang District from the aspects of land type composition, slope distribution, landscape pattern, spatial adjacency, farming distance and transportation convenience. This paper proposed optimization and control measures for different types of “ non-grain” cultivated land to in order to guide cultivated land to grow food. The results show that: The total amount of “non-grain” cultivated land in Youjiang District has reached 308. 38 km², mainly dry land, followed by garden land and forest land. The slope of “non-grain” cultivated land is mainly greater than 6°, and when the terrain slope is less than 25°, the area of “non-grain” cultivated land increases with the increase of slope grade. “Non-grain” cultivated land is fragmented, with high spatial proximity to gardens and woodlands, and strong interaction. The closer to rural settlements (less than 800 m) and roads ( less than 1 200 m), the larger the proportion of “ non-grain” cultivated land, and the spatial distribution of “non-grain”cultivated land is affected by cultivation distance and transportation convenience. [ABSTRACT FROM AUTHOR]