基于遥感与GIS的低丘红壤区耕地开发潜力评价  

Evaluation of potential for exploiting arable land in low hilly red soil region in Lanxi based on remote sensing and GIS

作　　者：张秀英[1] 朱晓芸[1] 王珂[1] 沈掌泉[1] 许红卫[1] 丁晓东[1] 罗鹏[1] 俞志强[2] 

机构地区：[1]浙江大学农业遥感与信息技术应用研究所,杭州310029 [2]浙江省地理信息中心,杭州310029

出　　处：《农业工程学报》2008年第3期114-118,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家科技支撑项目“基层农村综合信息服务技术集成与应用”(2006BAD10A07);浙江省围垦局(J40514)资助项目

摘　　要：以遥感和GIS技术为支撑,对浙江省兰溪市的低丘红壤区的耕地开发潜力进行了评价。以地形、土壤以及开发程度为基础,构建评价指标体系,采用综合指数法计算各单元的综合得分,并将潜力值分为四个等级。评价结果表明:适宜开发、允许开发、限制开发和不适宜开发的低丘红壤资源分别为3151.53、8790.71、8840.64和35175.25 hm2。评价结果与各指标的相关分析表明,开发潜力与坡度和土地利用现状存在强相关,与其他指标的相关性很低。坡度在≤6°、6～15°和15～25°的范围内,适宜开发的资源分别占总量的50.57%、43.36%和6.07%,允许开发的分别占12.67%、42.59%和44.75%。适宜开发的资源主要由果园和疏林地组成,二者占总量的74.68%;允许开发的资源主要由园地构成,二者占总量的88.95%。允许开发和适宜开发的资源在各城镇之间的分布极其不平衡。实地考察显示,耕地后备潜力评价与当地实际情况比较吻合。The potential for exploiting arable land in low hilly red soil region of Lanxi, Zhejiang Province was evaluated based on the technique of remote sensing and GIS. Terrain, soil and land use pattern were considered in the assessment system. The integrated evaluation indices were computed based on these factors, and the results were then grouped into four grades. The assessment results showed that the arable lands with feasible, permitted, limited, and unallowed exploiting potential were 3151.53, 8790.71, 8840.64 and 35175.25 hm^2, respectively; slope and land use had high correlation coefficient with exploiting potential; in the region with the slope of ≤6°, 6～15° and 15～25°, the arable land with feasible exploiting potential accounted for 50.57%, 43.36% and 6.07%, and the permitted arable land accounted for12.67%, 42.59% and 44.75%, separately. Sparse forest and orchard mainly constituted the arable land with feasible exploiting potential, and their total areas occupied 74.68%; orchard mainly composed that with permitted exploiting potential, and its area occupied 82.33%; and the arable lands with feasible and permitted exploiting potentials were lopsidedly distributed in town regions. Compared with the ground truth, the assessment results were acceptable.

关 键 词：耕地潜力评价 遥感 GIS 低丘红壤 兰溪 

分 类 号：O159[理学—数学] F301.24[理学—基础数学]