三江平原典型地区水田分布格局变化特征
发布时间：2019-02-19 21:59
【摘要】：研究目的:以三江平原最具代表性的七星河地区为研究区,基于1990年、2002年和2014年遥感影像数据,揭示自20世纪90年代农业结构调整以来水田分布格局变化规律。研究方法:GIS空间分析和标准差椭圆分析法。研究结果:(1)七星河地区呈现阶段性的水田化特点。1990年水田占耕地总面积的12.56%,处于水田化初始阶段,2002年和2014年水田面积占比分别是31.85%和37.06%,均处于水田化中期阶段。(2)七星河地区水田基本呈东北—西南的分布态势,空间分布阶段性极化,整体水田分布逐渐收缩,且呈现北移东扩的特征。(3)七星河地区前期以旱地和未利用地的水田化为主,其中旱地水田化规律性弱,方向性不明显,后期则基本为旱地水田化,综合极化特征突出,未来七星河地区水田化进程将会进一步放缓。研究结论:七星河地区水田分布格局的演化规律将对区域耕地资源合理利用与高效管理提供重要的理论依据。
[Abstract]:Objective: based on the remote sensing image data of 1990, 2002 and 2014, the study area of Qixing River in Sanjiang Plain was used to reveal the change rule of paddy field distribution pattern since the agricultural structure adjustment in 1990s. Research methods: GIS space analysis and standard deviation elliptic analysis. The results are as follows: (1) in Qishinghe area, the paddy field accounts for 12.56% of the total cultivated land in 1990, and it is in the initial stage of paddy field. The proportion of paddy field area in 2002 and 2014 is 31.85% and 37.06%, respectively. (2) the paddy fields in Qishinghe area are basically distributed from northeast to southwest, the spatial distribution is polarized at different stages, and the whole paddy field distribution gradually shrinks. (3) in the early stage of Qishinghe area, the paddy field of dry land and unused land is the main one, in which the regularity of paddy field in dry land is weak, the directionality is not obvious, and in the latter stage, it is basically paddy field in dry land, and the comprehensive polarization characteristic is prominent. In the future, the process of paddy field in Qixing River area will be further slowed down. Conclusion: the evolution law of paddy field distribution pattern in Qishinghe area will provide important theoretical basis for rational utilization and efficient management of regional cultivated land resources.
【作者单位】： 东北大学土地管理研究所;
【基金】：国家自然科学基金项目(41571165) 中央高校基本科研业务费资助项目(N152410002-8)
【分类号】：S127
，
本文编号：2426922
[Abstract]:Objective: based on the remote sensing image data of 1990, 2002 and 2014, the study area of Qixing River in Sanjiang Plain was used to reveal the change rule of paddy field distribution pattern since the agricultural structure adjustment in 1990s. Research methods: GIS space analysis and standard deviation elliptic analysis. The results are as follows: (1) in Qishinghe area, the paddy field accounts for 12.56% of the total cultivated land in 1990, and it is in the initial stage of paddy field. The proportion of paddy field area in 2002 and 2014 is 31.85% and 37.06%, respectively. (2) the paddy fields in Qishinghe area are basically distributed from northeast to southwest, the spatial distribution is polarized at different stages, and the whole paddy field distribution gradually shrinks. (3) in the early stage of Qishinghe area, the paddy field of dry land and unused land is the main one, in which the regularity of paddy field in dry land is weak, the directionality is not obvious, and in the latter stage, it is basically paddy field in dry land, and the comprehensive polarization characteristic is prominent. In the future, the process of paddy field in Qixing River area will be further slowed down. Conclusion: the evolution law of paddy field distribution pattern in Qishinghe area will provide important theoretical basis for rational utilization and efficient management of regional cultivated land resources.
【作者单位】： 东北大学土地管理研究所;
【基金】：国家自然科学基金项目(41571165) 中央高校基本科研业务费资助项目(N152410002-8)
【分类号】：S127
，
本文编号：2426922
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