东北地区水田分布格局的时空变化分析

发布时间：2018-05-10 17:24

本文选题：水田 + 时空格局　；参考：《农业现代化研究》2017年04期

【摘要】：东北地区是我国重要的商品粮基地,水稻尤其是粳稻主产区。本文基于东北地区2000-2015年水田空间数据,结合河流数据,采用GIS空间模型和数理统计方法,分析水田分布格局的时空变化,旨在为耕地资源利用与农业现代化研究提供依据。结果表明:1)东北地区水田主要集中分布于东北三大平原的沈阳-长春-哈尔滨一线以及主要河流沿岸区域。2000-2015年东北地区水田由419.15万hm2增加至603.49万hm~2,增加了184.34万hm~2,年均递增2.93%。2)辽宁、吉林和黑龙江省水田年均变化率分别为-1.06%、0.11%和6.04%,水田相对变化率分别为0.36、0.04、2.06,黑龙江省水田变化幅度高于东北地区平均水平。近15 a东北地区水田重心由长春市向北偏东移动至哈尔滨市,移动距离为159.92 km,移动速度为10.66 km/a。3)东北地区水田变化面积随着与主要河流距离增加而减少,但水田变化优势区在距主要河流35-45 km处。而各省域水田变化河流分异特征也具有一定的差异。
[Abstract]:Northeast China is an important commodity grain base in China. Rice, especially japonica rice, is the main producing area. Based on the paddy field spatial data from 2000 to 2015 in Northeast China and river data, this paper uses GIS spatial model and mathematical statistical method to analyze the temporal and spatial changes of paddy field distribution pattern in order to provide the basis for the study of cultivated land resource utilization and agricultural modernization. The results showed that the paddy fields in Northeast China were mainly distributed in the Shenyang-Changchun-Harbin line in the three main plains of Northeast China and the main riparian areas. From 2000 to 2015, the paddy fields in the Northeast region increased from 4.1915 million hm2 to 6.0349 million hmm-2, an increase of 1.8434 million hmc2. The average annual increase is 2.93%) Liaoning, The average annual variation rates of paddy fields in Jilin and Heilongjiang provinces were -1.060.11% and 6.04, respectively, and the relative variation rates of paddy fields were 0.36 0. 04% and 2. 06, respectively. The variation range of paddy fields in Heilongjiang Province was higher than the average level in Northeast China. In recent 15 years, the center of gravity of paddy field in Northeast China moved from Changchun to Harbin from north to east. The moving distance was 159.92 km, and the moving speed was 10.66 km / a.3.The variation area of paddy field in Northeast China decreased with the increase of distance with the main rivers. But the dominant area of paddy field is 35-45 km away from the main river. There are also some differences in the characteristics of river differentiation in the paddy fields in each province.
【作者单位】：东北农业大学资源与环境学院;黑龙江省农垦科学院科技情报研究所;
【基金】：国家自然科学基金项目(41571167) 黑龙江省自然科学基金项目(D201401)~~
【分类号】：F323.211

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