湖北农业科学
湖北農業科學
호북농업과학
2014年
12期
2788-2793
,共6页
耕地地力%耕地生产性能综合指数%模糊隶属度函数%地理信息系统
耕地地力%耕地生產性能綜閤指數%模糊隸屬度函數%地理信息繫統
경지지력%경지생산성능종합지수%모호대속도함수%지리신식계통
farmland fertility%farmland integrated fertility index%fuzzy membership function%geographic information system
以云南勐海县为研究对象，以ArcGIS软件为平台，以DEM分析、栅格计算和空间插值等空间分析技术为核心，结合德尔菲法、层次分析法、模糊隶属度函数和耕地生产性能综合指数(IFI)等方法，确立该县耕地地力的主要影响因子及其权重，建立综合评价体系及其空间计算模型，并对综合评价结果做出分析。研究结果表明，勐海县51575.73 hm2的耕地分为6个等级，一至六级耕地分别占总耕地的14.12%、27.40%、20.17%、17.23%、12.70%、8.38%。勐海县三级以上高质量耕地占60%以上，耕地地力总体情况良好，大力提升三级及其以下耕地的耕作能力是改善本地区耕地质量的主要途径。
以雲南勐海縣為研究對象，以ArcGIS軟件為平檯，以DEM分析、柵格計算和空間插值等空間分析技術為覈心，結閤德爾菲法、層次分析法、模糊隸屬度函數和耕地生產性能綜閤指數(IFI)等方法，確立該縣耕地地力的主要影響因子及其權重，建立綜閤評價體繫及其空間計算模型，併對綜閤評價結果做齣分析。研究結果錶明，勐海縣51575.73 hm2的耕地分為6箇等級，一至六級耕地分彆佔總耕地的14.12%、27.40%、20.17%、17.23%、12.70%、8.38%。勐海縣三級以上高質量耕地佔60%以上，耕地地力總體情況良好，大力提升三級及其以下耕地的耕作能力是改善本地區耕地質量的主要途徑。
이운남맹해현위연구대상，이ArcGIS연건위평태，이DEM분석、책격계산화공간삽치등공간분석기술위핵심，결합덕이비법、층차분석법、모호대속도함수화경지생산성능종합지수(IFI)등방법，학립해현경지지력적주요영향인자급기권중，건립종합평개체계급기공간계산모형，병대종합평개결과주출분석。연구결과표명，맹해현51575.73 hm2적경지분위6개등급，일지륙급경지분별점총경지적14.12%、27.40%、20.17%、17.23%、12.70%、8.38%。맹해현삼급이상고질량경지점60%이상，경지지력총체정황량호，대력제승삼급급기이하경지적경작능력시개선본지구경지질량적주요도경。
To evaluate the farmland fertility of Menghai County in Yunnan province, the ArcGIS software was used to made DEM analysis,raster calculation and spatial interpolation of spatial analysis technology. Menghai County was selected as the study area to establish major factors of influence and their weights for the farmland land productivity. To built a comprehensive evaluation system and spatial computing model with Delphi method,analytic hierarchy process (AHP),fuzzy membership function,farmland integrated fertility index (IFI) and other methods were used. Spatial distribution,area statistics and farmland nutrient analysis for the evaluating results were analyzed. The results showed that 51 575.73 hectares of cultivated land in Menghai County was divided into 6 grades.The percentages of total farmland from Grade 1 to Grade 6 land were 14.12%,27.40%,20.17%,17.23%,12.70% and 8.38%,respectively. GIS method could satisfy the requirements for quantifying and automating farmland fertility evaluation.The cultivated land over Grade 3 occupied more than 60% of total land. The overall situation of cultivated land fertility in Menghai County was good.The government should adjust measures to maintain the existing quality of cultivated land resources,and to enhance the farming ability of cultivated land worse than Grade 3.
