1 General information Journal of Geographical Sciences is an international academic journal that publishes papers of the highest quality in physical geography,natural resources,environmental sciences,geographic inform...1 General information Journal of Geographical Sciences is an international academic journal that publishes papers of the highest quality in physical geography,natural resources,environmental sciences,geographic information sciences,remote sensing and cartography.Manuscripts come from different parts of the world.展开更多
1 General information Journal of Geographical Sciences is an international academic journal that publishes papers of the highest quality in physical geography,natural resources,environmental sciences,geographic inform...1 General information Journal of Geographical Sciences is an international academic journal that publishes papers of the highest quality in physical geography,natural resources,environmental sciences,geographic information sciences,remote sensing and cartography.Manuscripts come from different parts of the world.展开更多
1 General information Journal of Geographical Sciences is an international academic journal that publishes papers of the highest quality in physical geography, natural resources, environmental sciences, geographic inf...1 General information Journal of Geographical Sciences is an international academic journal that publishes papers of the highest quality in physical geography, natural resources, environmental sciences, geographic information sciences, remote sensing and cartography. Manuscripts come from different parts of the world.展开更多
为探究生态脆弱区景观生态风险对土地利用格局变化的响应机制,并预测景观生态风险变化趋势,本文以武陵山片区为研究对象,基于2010年、2015年及2020年3期土地利用数据,通过基于景观格局指数的景观生态风险评价模型,揭示武陵山片区景观生...为探究生态脆弱区景观生态风险对土地利用格局变化的响应机制,并预测景观生态风险变化趋势,本文以武陵山片区为研究对象,基于2010年、2015年及2020年3期土地利用数据,通过基于景观格局指数的景观生态风险评价模型,揭示武陵山片区景观生态风险时空演变特征;采用斑块生成土地利用(Patch Generating Land Use Simulation,PLUS)模型,并结合多元数据动态模拟2030年不同情境下景观生态风险空间分布特征和变化趋势。结果显示:(1)2010—2020年,武陵山片区景观生态风险处于中等水平,低风险区面积持续增加,整体生态风险呈下降趋势;(2)景观生态风险的空间集聚效应逐年增强,高-高聚类集中分布在西北部,坡度较大的耕地区域主要为高风险和较高风险等级,并随着时间推移范围愈大且集聚性越强;(3)2030年自然发展、生态保护及耕地保护3种状态下的景观生态风险集聚性减弱,说明高风险区与低风险区之间的界限模糊化,风险分布趋于分散,但景观生态风险绝对值增加。建议未来加强低风险区的景观连通性并警惕高风险区的局部生态危机。展开更多
文摘1 General information Journal of Geographical Sciences is an international academic journal that publishes papers of the highest quality in physical geography,natural resources,environmental sciences,geographic information sciences,remote sensing and cartography.Manuscripts come from different parts of the world.
文摘1 General information Journal of Geographical Sciences is an international academic journal that publishes papers of the highest quality in physical geography,natural resources,environmental sciences,geographic information sciences,remote sensing and cartography.Manuscripts come from different parts of the world.
文摘1 General information Journal of Geographical Sciences is an international academic journal that publishes papers of the highest quality in physical geography, natural resources, environmental sciences, geographic information sciences, remote sensing and cartography. Manuscripts come from different parts of the world.
文摘为探究生态脆弱区景观生态风险对土地利用格局变化的响应机制,并预测景观生态风险变化趋势,本文以武陵山片区为研究对象,基于2010年、2015年及2020年3期土地利用数据,通过基于景观格局指数的景观生态风险评价模型,揭示武陵山片区景观生态风险时空演变特征;采用斑块生成土地利用(Patch Generating Land Use Simulation,PLUS)模型,并结合多元数据动态模拟2030年不同情境下景观生态风险空间分布特征和变化趋势。结果显示:(1)2010—2020年,武陵山片区景观生态风险处于中等水平,低风险区面积持续增加,整体生态风险呈下降趋势;(2)景观生态风险的空间集聚效应逐年增强,高-高聚类集中分布在西北部,坡度较大的耕地区域主要为高风险和较高风险等级,并随着时间推移范围愈大且集聚性越强;(3)2030年自然发展、生态保护及耕地保护3种状态下的景观生态风险集聚性减弱,说明高风险区与低风险区之间的界限模糊化,风险分布趋于分散,但景观生态风险绝对值增加。建议未来加强低风险区的景观连通性并警惕高风险区的局部生态危机。
