| 汪延彬,胡燕凌.基于空间插值的农用地单产水平差异性分析——以甘肃省陇东黄土旱塬区为例[J].干旱地区农业研究,2012,30(5):20~24 |
| 基于空间插值的农用地单产水平差异性分析——以甘肃省陇东黄土旱塬区为例 |
| Analysis of farmland yield level based on spatial interpolation methods——A case of eastern region in Gansu Province |
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| DOI：10.7606/j.issn.1000-7601.2012.05.04 |
| 中文关键词: 农用地单产 空间插值 陇东黄土旱塬区 |
| 英文关键词:farmland yield spatial interpolation eastern region in Gansu Province |
| 基金项目:甘肃省农用地综合生产能力调查与评价项目 |
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| 中文摘要: |
| 利用农用地产能核算外业调查数据，对甘肃省陇东黄土旱塬区农用地理论单产与可实现单产的空间分布特性进行深入分析。方法采用了地统计分析法、泛克里格空间插值法、对比研究法。结果表明：(1)陇东黄土旱塬区南部县区的理论单产普遍高于北部县区，中部县区的理论单产最高；(2)陇东黄土旱塬区可实现单产水平差异较为明显，崆峒区中部的可实现单产最高，合水县东北部、宁县西南部、西峰区南部、泾川县中部及灵台县北部的可实现单产次之；(3)在崆峒区、崇信县、灵台县和泾川县境内存在一条西北——东南走向的较高单产水平带状区域。研究结论：(1)基于地统计分析法的空间插值可用于了解区
域农用地单产水平的空间分布特性；(2)陇东黄土旱塬区中部地区应作为未来农用地管理的重点区域。 |
| 英文摘要: |
| The purpose of this paper is to gain some insight into the spatial distribution feature of theoretical yield level and realizable yield level of the farmland in Gansu eastern region based on calculation of survey data using geostatistical analysis method, universal Kriging spatial interpolation method and comparative research method. The result showed as follows: (1) the theoretical yield level of southern counties was higher than the level of northern counties generally; the counties which lie on the central region had the highest theoretical yield level. (2) The realizable yield level in Gansu eastern region had significant difference. The highest level was located at central region of Kongtong. In northeast region of Heshui, southwest region of Ning, southern region of Xifeng, central region of Jingchuan and northern region of Lingtai, the realizable yield level was relatively high. (3) From northwest to southeast among Kongtong, Cho
ngxin, Lingtai and Jingchuan, there was a band region where the yield level was obviously high. It is concluded that: (1) spatial interpolation method based on geostatistical analysis can be used to discover distribution feature of the whole region. (2) Middle of eastern region in Gansu Province should be the key area about farmland management in future. |
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