浙江农业学报
浙江農業學報
절강농업학보
ACTA AGRICULTURAE ZHEJIANGENSIS
2013年
6期
1390-1396
,共7页
耕地资源%信息系统%综合应用%象山县
耕地資源%信息繫統%綜閤應用%象山縣
경지자원%신식계통%종합응용%상산현
land resource%information system%integrated use%Xiangshan County
基于GIS技术,将象山县土壤图、土地利用现状图及行政区划图相叠置,确定全县耕地地力评价单元985个。根据象山县实际情况和浙江省确定的15个耕地地力评价因子,采用层次分析法,确定各评价因子权重和隶属度,根据综合地力指数等级将耕地划分为三等六级。评价结果显示:目前县内现有耕地20742 hm2,其中一等耕地全为二级,面积为458 hm2,占总面积的2.21%;三级耕地面积为13337.3 hm2,占总面积的64.30%,四级耕地面积为6712.6 hm2,占总面积的32.36%;五级耕地面积为234.1 hm2,占总面积的1.13%。
基于GIS技術,將象山縣土壤圖、土地利用現狀圖及行政區劃圖相疊置,確定全縣耕地地力評價單元985箇。根據象山縣實際情況和浙江省確定的15箇耕地地力評價因子,採用層次分析法,確定各評價因子權重和隸屬度,根據綜閤地力指數等級將耕地劃分為三等六級。評價結果顯示:目前縣內現有耕地20742 hm2,其中一等耕地全為二級,麵積為458 hm2,佔總麵積的2.21%;三級耕地麵積為13337.3 hm2,佔總麵積的64.30%,四級耕地麵積為6712.6 hm2,佔總麵積的32.36%;五級耕地麵積為234.1 hm2,佔總麵積的1.13%。
기우GIS기술,장상산현토양도、토지이용현상도급행정구화도상첩치,학정전현경지지력평개단원985개。근거상산현실제정황화절강성학정적15개경지지력평개인자,채용층차분석법,학정각평개인자권중화대속도,근거종합지력지수등급장경지화분위삼등륙급。평개결과현시:목전현내현유경지20742 hm2,기중일등경지전위이급,면적위458 hm2,점총면적적2.21%;삼급경지면적위13337.3 hm2,점총면적적64.30%,사급경지면적위6712.6 hm2,점총면적적32.36%;오급경지면적위234.1 hm2,점총면적적1.13%。
Based on the GIS technology , the soil map, current land use map and administrative map were overlapped to define the 985 assessing units of the county .Fifteen assessing factors were chosen in view of the actual situation of the county and land fertility assessing factors of Zhejiang Province , and the analytical hierarchy process was employed to define the weights and membership of each factor , then the land was classified into three grades and six levels ac-cording to the integrated fertility index .The results showed that the existing land covered an area of 20742 hm2 .The first grade land all belonged to the second level , and the area was 458 hm2 , 2.21%of the total area;the area of the third level was 13 337.3 hm2 , 64.30%of the total area;the area of the fourth level was 6 712.6 hm2 , 32.36%of the total area , and the area of the fifth level was 234.1 hm2 , 1.13%of the total area .