| 文高辉,张紫怡,田雨萌,方龙俊,王子诚,丁学谦,黄瑶.长江中下游粮食主产区耕地面源污染时空分异特征[J].农业环境科学学报,2024,43(1):133-142. |
| 长江中下游粮食主产区耕地面源污染时空分异特征 |
| Temporal and spatial characteristics of cultivated land non-point source pollution in the main grainproducing areas of the middle and lower Yangtze region |
| 投稿时间：2023-03-07 |
| DOI：10.11654/jaes.2023-0168 |
| 中文关键词: 耕地面源污染 空间分异 迁移轨迹 冷热点分析 粮食主产区 长江中下游 |
| 英文关键词: cultivated land non-point source pollution spatial differentiation migration trajectory cold and hot spot analysis main grain producing areas middle and lower Yangtze region |
| 基金项目:国家自然科学基金项目（41801190）；湖南省自然科学基金面上项目（2023JJ30407）；国家级大学生创新创业训练计划支持项目（202110542045）；湖南师范大学大学生创新创业训练计划项目（2021152） |
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| 中文摘要: |
| 为揭示长江中下游粮食主产区耕地面源污染时空规律，利用长江中下游粮食主产区58个市（州、区）统计数据，采用空间分析模型、重心模型、冷热点分析等方法分析了2009—2019年长江中下游粮食主产区耕地面源污染时空分异特征。结果表明：长江中下游流域整体以及赣湘鄂皖4省2009—2019年耕地面源污染总量和强度总体均呈现出“先升后降”的变化趋势，其中湖北省的耕地面源污染强度与总量均位于前列。2009—2019年耕地面源污染强度总体表现为“西高东低”的空间分布特征，其中江西省整体上一直保持为低污染强度，湖北省则为高污染强度聚集区。长江中下游粮食主产区耕地面源污染强度重心变化呈现出“区间震荡”的规律，且长江中下游粮食主产区耕地面源污染强度重心迁移呈现明显的阶段特征。2009—2019年长江中下游粮食主产区耕地面源污染强度呈现出明显的空间聚集态势，总体表现为“东冷西热”的空间分布格局。因此，长江流域中游段特别是湖北省和湖南省是未来进一步推进耕地面源污染防治的重点区域，要统筹好国家粮食安全和耕地生态安全双重目标。 |
| 英文摘要: |
| In order to reveal the temporal and spatial patterns of non-point source pollution in cultivated land within the main grainproducing areas of the middle and lower reaches of the Yangtze River, we used statistical data for 58 cities（prefectures and districts）in this area from 2009 to 2019. These data were analyzed using spatial analysis models, barycenter models, cold and hot spot analysis, and other methods. The results revealed that the total amount and intensity of cultivated land non-point source pollution in the middle and lower Yangtze region and the four provinces of Jiangxi, Hunan, Hubei, and Anhui from 2009 to 2019 showed a trend of an initial rise and subsequent fall, among which the intensity and total amount of cultivated land non-point source pollution in Hubei Province were the most pronounced. From 2009 to 2019, the non-point source pollution intensity of cultivated land was generally characterized by a spatial distribution that was high in the west and low in the east, of which Jiangxi Province generally remained a low pollution area, whereas Hubei Province was found to be an area of high pollution concentrations. The change of the center of gravity of the non-point source pollution intensity of the cultivated land is characterized by the law of“interval shock”, and the shift in the center of gravity of the non-point source pollution intensity of the cultivated land shows obvious stage characteristics. From 2009 to 2019, the non-point source pollution intensity of cultivated land showed an obvious spatial gathering trend, which was generally characterized by a spatial distribution pattern of cold in the east and hot in the west. On the basis of these findings, we established that in order to coordinate the dual goals of national food security and the ecological security of cultivated land, the middle reaches of the Yangtze River Basin, particularly the provinces of Hubei and Hunan, are key areas for further promoting the prevention and control of farmland non-point source pollution in the future. |
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