奉新县耕地经营规模在地形梯度上的分布特征

Distribution characteristics of farmland operation scale at different terrain gradients in Fengxin County

在奉新县农村土地承包经营权确权调查资料基础上,利用数理统计法和GIS空间分析法,引入地形位指数和分布指数,对奉新县农户的耕地经营规模在不同地形梯度上的分布特征进行了研究。结果显示:1)奉新县全县49 891户农户的平均耕地规模为6.31块/户和0.66 hm^2/户,80%以上的农户为小规模经营。2)农户耕地经营规模受地形因素影响显著,两者呈负相关性关系。3)耕地承包地块数在10块以上或者耕地承包面积在1 hm^2以上的农户,其耕地的分布指数都在地形位指数等级1的区域达到最大值,随着地形位指数的增加,主体地位迅速被农户耕地经营规模较小的所取代。4)不同等级的农户耕地承包地块数和承包面积在不同的地形上有着不同的优势分布区间。这些都为新形势下的农村土地工作提供重要参考与借鉴。

Based on the survey data of rural land contractual management right to register ownership in Fengxin County, and through the terrain niche index and distribution index and applying correlation analysis, regression analysis, GIS spatial analysis method, this paper studies the distribution characteristics of farmland operation scale in different terrain gradients. Results show： 1） the average size of farmland operation scale in Fengxin County, which contains 49 891 households, is 6.31 block/household and 0.66 hm2/household. More than 80% of farmers run at a small-scale; 2） farmland operation scale was significantly affected by terrain factors, and there was a negative correlation between them; 3） for those farmers who have more than 10 plots or the contracted area is above 1 hm2, and their distribution index of arable land reached the maximum level in the grade 1 area of terrain niche index, while the dominant position was quickly replaced by those farmers with small operation scale, as the increasing of terrain niche index; and 4） the contracted land plots of different grades and the contracted area of different grades have their own different dominant distribution intervals. All these conclusions provide important reference for rural land management under the new situation.