| 东北地区水稻分布的时空演变特征及驱动机制分析 |
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| 引用本文： | 李宇.东北地区水稻分布的时空演变特征及驱动机制分析[J].测绘与空间地理信息,2021,44(1):73-76,81. |
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| 作者姓名： | 李宇 |
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| 作者单位： | 福州大学 福建省空间信息工程研究中心空间数据挖掘与信息共享教育部重点实验室,福建 福州350116;数字中国研究院(福建) ,福建 福州350116 |
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| 基金项目： | 国家自然科学基金面上基金项目;福建省重点科技项目 |
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| 摘 要： | 研究水稻分布的时空演变特征及驱动机制,对优化农业生产结构至关重要。基于植被物候变化特征、地表水变化特征结合方法识别水稻的空间分布,获取了2001—2017年东北水稻空间分布图,并进行了水稻的时空演变特征及驱动机制研究。研究表明,2001—2017年东北地区水稻呈先略减后直线上升的特点,2017年水稻种植面积约300万hm 2,约为2001年的2倍,增加面积主要分布在黑龙江省的三江平原农垦模式的耕地区域。东北地区水稻种植面积扩张约90%分布在低海拔、距水体较近区域。气温变暖、农业技术的发展、水稻总产值的上涨及农业税减免、稻谷最低收购价等系列惠农政策的实施,促进了东北地区水稻种植面积的大幅扩张。这些发现为将来更加深刻探讨水稻分布对自然-人为因素的响应提供了基础。
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| 关 键 词： | 水稻 东北地区 长时间序列 时空演变 驱动机制 |
Analysis on the Spatio-temporal Evolution Characteristics and Driving Mechanism of Rice Distribution in Northeast China |
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| LI Yu.Analysis on the Spatio-temporal Evolution Characteristics and Driving Mechanism of Rice Distribution in Northeast China[J].Geomatics & Spatial Information Technology,2021,44(1):73-76,81. |
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| Authors: | LI Yu |
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| Institution: | (Key Laboratory of Spatial Data Mining&Information Sharing of Ministry of Education,National Engineering Research Centre of Geospatial Information Technology,Fuzhou University,Fuzhou 350116,China;The Academy of Digital China,Fuzhou 350116,China) |
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| Abstract: | It is very important to study the spatio-temporal evolution characteristics and driving mechanism of rice distribution for optimizing agricultural production structure.The spatial distribution of rice was identified based on the method of combining the change characteristics of vegetation phenology and surface water,the spatial distribution map of rice in northeast China from 2001 to 2017 was obtained,the spatio-temporal evolution characteristics and driving mechanism of rice were studied.The results indicated that the rice in northeast China showed the characteristics of first decreasing and then rising in a straight line from 2001 to 2017.In 2017,The area of rice was about 3 million hectares,which was about twice of that in 2001.The increased rice area was mainly distributed in the cultivated land area of Sanjiang plain in Heilongjiang province,and about 90%of the rice area expansion in northeast China is located in the area with low altitude and close to the water body.The implementation of a series of favorable agricultural policies,such as warming temperatures,the development of agricultural technology,the rise of rice output,the agricultural tax reduction,and the minimum purchase price of rice,have contributed to the substantial expansion of rice in the northeast.These findings will provide a basis for further study on the response of rice distribution to natural human factors in the future. |
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| Keywords: | rice Northeast China long time series spatio-temporal dynamics driving mechanism |
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