摘要
耕地资源是人类生存和发展的基础性资源,科学判定耕地空间分布特征,对促进耕地保护及空间优化布局等方面具有重要意义。选用耕地质量的国家利用等别,应用空间自相关分析方法来探究汉源县耕地利用等别空间分布特征。结果表明:①汉源县耕地质量状况较好,耕地利用等别主要分布在7~11等,7~8等为高等质量地,占全县耕地面积的10.27%;9~11等为中等质量地,占全县耕地面积的89.73%;高等地主要分布在唐家乡、富春乡、九襄镇等乡镇,中等地各个乡镇均有分布。②全局自相关结果显示,全局Moran’s I指数为0.648947,汉源县耕地质量有显著空间集聚性,局部自相关结果显示汉源县中部有低—低的低值聚集区和四周有高—高的高值聚集区2个显著相关性区域,高—低聚集区和低—高聚集区零星分布区域。该研究结果可为调整和补划基本农田、评价更新耕地质量、管理土地资源及农业生产提供科学依据。
Cultivated lands are among the most fundamental resources for the existence and development of mankind.Scientific analysis of the spatial distribution characteristics of cultivated land utilization grade is highly useful in the protection and resource optimization of cultivated lands.Based on the national cultivated land quality grade,the spatial distribution characteristics of cultivated land utilization grade in Hanyuan County was studied by using spatial autocorrelation analysis method.The results showed that①The cultivated land utilization grade in Hanyuan County was good and mainly distributed from level 7 to 11.Level 7-8 was the high-grade land,accounting for 10.27%of cultivated land area in Hanyuan County,which was mainly distributed in Tangjia,Fuxiang and Jiuxiang towns.Level 9-11 was medium-grade land,up to 89.63%of the cultivated land area in Hanyuan County and distributed in all villages and towns.②The global autocorrelation results show that the global Moran’s I is about 0.648947,indicating that the quality of cultivated land in Hanyuan County has significant characteristics of spatial agglomeration.The local autocorrelation results show that there are two significant correlation regions,the low-low low value accumulation area in the middle and the high-high high value accumulation area in the surrounding,while the high-low and low-high accumulation areas are scattered sporadically.The research results provide scientific evidence to adjust and rearrange basic farmlands,to evaluate and update the quality of cultivated land,to manage land resources and promote agricultural production.
作者
周佳松
夏建国
龙丹
ZHOU Jia-song;XIA Jian-guo;LONG Dan(Sichuan Land Consolidation and Rehabilitation Center,Chengdu,Sichuan 610045;College of Resources,Sichuan Agricultural University,Chengdu,Sichuan 611130)
出处
《安徽农业科学》
CAS
2020年第8期84-88,91,共6页
Journal of Anhui Agricultural Sciences
关键词
耕地利用等别
空间自相关分析
空间分布特征
汉源县
Cultivated land utilization grade
Spatial autocorrelation analysis
Spatial distribution characteristics
Hanyuan County
