基于土壤和地形约束的耕地识别方法研究——以锦西灌区为例  

Cultivated land identification based on soil properties and terrain features identification:A case study of Jinxi irrigation area

作　　者：李保琦[1] 肖伟华[1] 杨明智[1] 孙青言[1] 宋长虹[2] 侯保灯[1] 董晓勇 

机构地区：[1]中国水利水电科学研究院,北京100038 [2]黑龙江省水利水电勘测设计研究院,哈尔滨150080 [3]青海省水利水电勘测设计研究院,西宁810000

出　　处：《中国农业大学学报》2017年第8期74-82,共9页Journal of China Agricultural University

基　　金：黑龙江省水利科技项目(201305);国家自然科学项目(51679252)

摘　　要：为探讨土壤特性和地形特征这2个最为核心的耕地资源限制因子影响下的可用于耕地的土地资源,在前人研究的基础上,综合考虑土壤类型及其性质和地形影响,以ArcGIS分析工具为平台,构建耕地资源识别模型,对锦西灌区内可用于耕地的土地进行识别分析。结果表明:在锦西灌区1 200.59km^2的土地中,568.33km^2适宜耕地,较适宜耕地的面积为5.92km^2,改良后适宜的面积为564.15km^2,仅62.19km^2不适宜耕地,不适宜耕地部分包括受土壤因素限制的34.19km^2和受地形影响的32.00km^2,综合考虑两方面的因素所得面积为62.19km^2。与传统的识别方法比较,本研究所构模型对最核心的限制因素进行综合考虑,可更全面、更客观、更精准的识别可用于耕地的土地资源。Cultivated land resource identification is one of the most important technology to guarantee the safety of food strategy.Based on existing research,from the aspects of precipitation,productivity of cultivated land,potentiality of grain production and quality of cultivated land,a new model based on soil property and terrain features is presented to identify cultivated land resource in Jinxi irrigation area.The model is presented on the platform of ArcGIS.The results show that：Of the total 1 200.59km^2,568.334km^2 is the most suitable for cultivation;5.92km^2 is more suitable to cultivate;The area of cultivated land reaches 564.15km^2 after revision and the rest do not fit cultivate.By taking account of two features,the cultivated land is about 62.19km^2.Compared to traditional methods,the new model is more comprehensive,objective and precise.

关 键 词：耕地识别 土壤属性 地形特性 锦西灌区 

分 类 号：Q938.13[生物学—微生物学]