湖北省玉米种植区域空间格局探究.docVIP

湖北省玉米种植区域空间格局研究 　　摘要：采用一种集遥感、洛伦兹曲线、基尼系数和空间几何重心在内的作物分布格局监测方式研究湖北省玉米的空间分布特征。结果显示，该方法能够量化表达作物分布的空间差异性并指明作物分布的集聚地。湖北省内玉米种植结构不均衡特征明显，区域间差异巨大，基尼系数高达0.606，玉米的空间分布重心偏居于宜昌市远安县境内；鄂西山区和鄂北的丘陵岗地是湖北省玉米的主要种植区，在江汉平原和鄂东地区则仅有少量的玉米零散分布。另通过多种方法综合研究湖北省玉米种植格局特征，为科学调整湖北省玉米种植结构，提升玉米生产能力提供科学依据 关键词：作物分布格局；遥感监测；空间分布；洛伦兹曲线；空间几何重心法 中图分类号：S513 文献标识码：A 文章编号：0439-8114（2016）14-3601-04 DOI：10.14088/j.cnki.issn0439-8114.2016.14.016 Abstract：An integrated monitoring method based on remote sensing technology， Lorenz Curve， Gini Coefficient and spatial geometric gravity was used to study the spatial distribution characteristics of corns in Hubei province. The results revealed that this method can quantify the difference of crops in spatial distribution as well as indicate the gathering place of crop distribution. Moreover， the results also showed that the unbalanced distribution of crop planting is very prominent in Hubei Province and huge differences existed in different regions The Gini coefficient is as high as 0.606. The space gravity center of corn distribution with lattitude 31°18′N and longtitude 111°22′E lies in Yuan’an County of Yichang city， which is located in the west of Hubei province. The main planting regions of corn are in the mountain regions of western Hubei province and in the hilly regions of northern Hubei province. In this work， the corn planting pattern in Hubei province was studed by the comprehensive research methods， which will help to provide scientific basis to the adjustment of the corn planting structure and the improvement of corn production. Key words： corn distribution pattern；remote sensing monitoring；spatial distribution；Lorenz curve；Geometric center of gravity 农作物的空间分布格局反映了人类农业生产在空间范围内利用农业生产资源的状况，是了解农作物种类、结构和分布特征的重要信息，也是进行作物结构调整和优化的依据[1]。过去农作物种植信息的获取通常用的方法是统计汇总，该方法可以获取农作物种植结构及其变化的详细信息，但用于大范围作物信息获取时往往会费时、费力、费财。同时，由于对下级单位数据上报的依赖，所获取的作物信息存在明显的时间滞后性[2] 遥感技术因具有宽范围、高时效、低成本等优点，现已成为快速获取农作物种植面积及变化信息的主要技术手段[3]。利用遥感技术进行作物播种面积的研究，对掌握不同作物空间格局动态变化规律有着重要的意义。虽然遥感技术