乡镇耕地整理对耕地景观破碎度的影响研究  

Impacts of farmland consolidation on farmland landscape.

作　　者：邓劲松[1] 王珂[1] 李君[1] 徐俊锋[1] 沈掌泉[1] 高玉蓉[1] 

机构地区：[1]浙江大学环境与资源学院,杭州310029

出　　处：《应用生态学报》2006年第1期41-44,共4页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(40201021);浙江省科技厅资助项目(2004c33089)

摘　　要：耕地整理是社会经济发展到一定阶段,对耕地利用由粗放型向集约型转变的客观要求,是当前和今后相当长时期我国土地整理的主要内容.全国各地尤其是经济发达地区的耕地整理工作开展迅速,但由于目前我国耕地整理尚处于初级阶段,大多数地区耕地整理的主要目标和基本动力仍是增加耕地数量,实践中往往偏重耕地整理的经济效益,而耕地景观保护则未引起足够重视.本文以桐乡市3个乡镇为研究对象,以土地生产率、土地利用率和投资能力作为评价因素,采用综合评分法对耕地整理强度进行分级;在ARCINFO和ERDAS地理信息系统软件支持下,运用景观破碎度指数、斑块数量、斑块密度等分析了耕地整理对耕地景观破碎度的影响及景观破碎度和整理强度的相互关系.结果表明,耕地整理使得耕地景观破碎度升高,耕地被分割、破碎的程度加剧;随着整理强度的增加,耕地景观破碎化程度相应增加.因此,在开展耕地整理时,必须遵循可持续发展的基本原理,注重耕地景观保护,朝着生态环境保育型土地整理方向发展.Farmland consolidation is the act of regulating, improving, and comprehensively renovating the structure, quality, and layout of field, water, road, forestry, and village in the countryside in a certain area by means of administration, economy, law, and engineering techniques according to the goal and usage defined by land use planning, so as to improve farmland use rate and its output rate, to increase farmland area, and to achieve better productive, living, and ecological environment. Recently, farmland consolidation has been carried out all over the country, especially in its economy-developed regions. But, unscientific planning and unsuitable farmland consolidation engineering have negative effects on field ecological system. In this paper, based on the technology of GIS and RS, the basic theories and methods of landscape ecology and a compositive grading method were applied to analysis the dynamics of farmland landscape fragmentation in Tongxiang county. The results showed that the farmland landscape fragmentation in this county was strongly affected by consolidation, More attention should be paid to the protection of farmland landscape during consolidation, and to avoid or decrease the negative effects resulted from unscientific planning and unsuitable farmland consolidation engineering.

关 键 词：耕地整理 景观破碎度 潜力系数 综合评分法 

分 类 号：F301.2[经济管理—产业经济]