| 基于GIS的青海省县级耕地地力评价研究 |
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| 引用本文： | 李月梅,杨文辉,韩燕.基于GIS的青海省县级耕地地力评价研究[J].河南农业科学,2011,40(9):66-69. |
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| 作者姓名： | 李月梅 杨文辉 韩燕 |
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| 作者单位： | 青海省农林科学院土壤肥料研究所,青海西宁,810016 |
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| 基金项目： | 国家“十一五”科技支撑计划项目(2006BAD05B07) |
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| 摘 要： | 采用GIS技术和层次分析法、综合指数法等,对青海省乐都县耕地地力进行科学评价。结果表明,全县24 982.44hm2耕地可分为5级,其中,一等地IFI(地力综合指数)>0.814,面积为858.29hm2,占总面积的3.44%;二等地IFI 0.660～0.814,面积3 621.80hm2,占14.5%;三等地IFI 0.455～0.660,面积8 002.61hm2,占32.03%;四等地IFI 0.390～0.455,面积9 236.56hm2,占36.97%;五等地IFI<0.390,面积3 263.85hm2,占13.06%。并采用归纳法,建立了包含立地条件、理化性状和土壤管理等地力要素的乐都县耕地地力评价指标体系。
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| 关 键 词： | 地理信息系统(GIS) 青海 耕地地力评价 指标体系 |
GIS Evaluation of Integrated Soil Fertilities of Cultivated Lands in Qinghai Province |
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| LI Yue-mei,YANG Wen-hui,HAN Yan.GIS Evaluation of Integrated Soil Fertilities of Cultivated Lands in Qinghai Province[J].Journal of Henan Agricultural Sciences,2011,40(9):66-69. |
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| Authors: | LI Yue-mei YANG Wen-hui HAN Yan |
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| Institution: | LI Yue-mei,YANG Wen-hui,HAN Yan(Soil and Fertilizer Institute,Qinghai Academy of Agricultural and Forestry Science,Xining 810016,China) |
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| Abstract: | GIS technology,layer analysis method and integrated fertility index evaluation method were applied to evaluate the soil fertilities of the cultivated lands in Ledu county,Qinghai pro-vince.The result showed that the cultivated farmland of 24982.44 ha in the whole Ledu county was divided into 5 grades.The integrated fertility index(IFI) of the cultivated land at the first grade was bigger than 0.814,and its area was 858.29 ha,accounting for 3.44%of the total cultivated area;the IFI of the cultivated land at ... |
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| Keywords: | Geographical information system(GIS) Qinghai province Evaluation of integrated fertilities of cultivated lands Index system |
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