农业工程学报Issue(24)：298-307,10.DOI:10.3969/j.issn.1002-6819.2014.24.037
考虑耕地生态质量的基本农田划定方法
Demarcating method of prime farmland considering ecological quality of cultivated land
摘要
Abstract
Evaluating the quality of cultivated land comprehensively and systematically is an important prerequisite in performing, demarcating, and conducting high standards of prime farmland scientifically. Taking Tunchang county, Hainan Province as an example, these indexes are chosen to evaluate the quality of cultivated land in the paper as following: topography, erosion condition of soil, ecological system service value, flood disaster, connection, etc, on the basis of comprehensive consideration of nature quality and location condition. It shows that the ecological quality is very important in prime farmland evaluation, and index system is improved. The result: 88.91% of cultivated land is demarcated into prime farmland, with comprehensive evaluating score equal or larger than 70, mainly in the central south and north of the platforms and plains regions of Tunchang country. Contrastive analysis was studied between the method of this paper (method 1) and natural quality of agricultural land (method 2) in demarcating prime farmland. Cultivated land of the study area is classified into four type regions, namely: Type region I, Type region II, Type region III, Type region IV. Among them, Type region I is described as the farmland area demarcated by the above two methods, which is the largest part (84.49%) and has some essential characteristics such as good nature quality, convenient location convenient, less natural disasters, and soil erosion, as well as fairly flat land. Except that, prime farmland is close to towns or rural settlements in spatial distribution, and their average patch area is large and is in the obviously centralized distribution, which is easy to agricultural scaled production and mechanization. Type region II is chosen through method 2, only occupies 4.42%of the area, but distributes in every town. This kind of cultivated land is mainly west and east of the mountainous and hilly regions. The patches are much smaller than Type region I or Type region III, and the connection degree is small too. The area of Type region III is equal to Type region II, but the difference of their count is significant because of the average patch area. Considering ecological quality influence, the natural quality of cultivated land is no longer the key factor in demarcating prime farmland, which is of equal importance. A striking feature of prime farmland is the trend towards flat, connective area or concentrated areas of towns, which is near to Type region I and is the second option to demarcate prime farmland except for Type region I. All kinds of indexes are very poor in Type region IV which is eliminated by both methods 1 and 2 in demarcating prime farmland. Its area only occupies 6.68% of the total cultivated land. Conclusion: The method proposed in this paper is more scientific and reasonable, which will help to maintain stable quality and avoid cuts to the amount of cultivated land. Furthermore, it can not only provide scientific basis for evaluating of farmland into basic farmland but also provide a new idea for the quality evaluation of cultivated land and basic farmland delimitation.关键词
土地利用/生态/地理信息系统/耕地/质量/基本农田/划定Key words
land use/ecology/geographic information systems (GIS)/cultivated land/quality/prime farmland/demarcation分类
管理科学引用本文复制引用
任艳敏,唐秀美,刘玉,潘瑜春..考虑耕地生态质量的基本农田划定方法[J].农业工程学报,2014,(24):298-307,10.基金项目
国家自然科学基金 （）
