摘要
农户对耕地的利用已从最初获取满足自身生存需求转向消费需求，这一转变促使耕作半径逐渐成为了以农业生产为收入来源农户获取耕地高效产出的关键，基于耕作半径预测纯农型农户集聚区规模既保障农户经济效益最大化又促进村域土地高效利用．研究以重庆市沙坪坝区白林村为样区，利用ArcGIS9．3空间分析功能，结合地形位指数与分布指数确定优势地形位上的纯农型农户集聚区，借助于耕作半径和适度人口数确定其规模．研究表明：81％的耕地与87％的农村居民点分布在1～4级地形位上，其分布指数大于1，为耕地及农村居民点分布的优势地形位；优势地形位上纯农型农户集聚区耕作半径最小为179m，最大为255m，纯农型农户集聚区耕作半径应控制在255m范围内；纯农型农户集聚区规模控制在0．33～1．04hm2范围内最适宜．
The motive of rural households on the use of cultivated tand has undergone a gradual substantial conversion from the initial survival needs to the consumption demand, which is the key to promoting the rural households, mainly depending on agricultural benefit, to achieve the best possible result from the cultivated land. Calculating the clustering scale of pure agricultural rural households based on farming radi us not only enhances farmers＇ maximization of economic benefit, but also efficiently promotes land use. The paper takes Bailin village of Shapingba district of Chongqing as the sample and ArcGIS9.3 as the p form, combines the spatial analysis function of GIS with terrain niche and its distribution index to conf at the clustering area of pure agricultural rural households on the advantageous terrain niche index and, final ly, defines the slustering scale by means of cultivated radius and optimum population size. The results show that 81% of the cultivated land and 87% of the rural settlements are distributed mainly on the terrain niches between Level 1 and Level 4, which are the advantageous terrain niche of cultivated land and rural settlements, for their distribution indexes are greater than 1; that on the advantageous terrain niche, the farming radius in the clustering area of pure agricultural rural households varies from 179 to 255 meters, and so the farming radius should be kept below 255 meters; and that the optimum clustering scale of pure agricultural rural households in the village is in the range of 0.33--1.04 ha.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第11期133-140,共8页
Journal of Southwest University(Natural Science Edition)
基金
国家科技支撑计划课题"西南山地生态安全型村镇社区与基础设施建设关键技术研究与示范"(2013BAJ10B07-04A)
关键词
纯农型农户
优势地形位
耕作半径
集聚规模
丘陵区
pure agricu scale
hilly ltural rural households
advantageous terrain niche
farming radius
clustering area
