近14年安徽省耕地资源安全的时空特征
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国家自然科学基金项目“豫西末次盛冰期以来季风事件的高分辨率石笋记录与气候意义”(41372177)


Spatiotemporal Characteristics in Cultivated Land Resources Security in Anhui Province
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    摘要:

    [目的]探究近14 a安徽省耕地资源安全时空特征,为安徽省社会经济发展和耕地保护提供依据。[方法]从耕地资源数量、质量和生态安全3个方面选取27个评价指标,构建耕地资源综合安全评价体系。[结果]①安徽省耕地数量和质量安全程度分别呈下降和上升趋势,生态安全等级较为稳定,综合安全呈缓慢上升趋势;②耕地资源数量安全总体呈皖东、皖北高于皖南的空间格局;质量安全呈现皖中、皖南高于皖北的特征;生态安全表现为皖中部和皖南较低,其余较高的空间格局;综合安全与数量安全空间分布具有相似性,且在时间上,低安全等级地市呈现"集中-分散"的空间特征,高安全程度地市反之。③近14 a安徽省耕地资源数量、质量和生态安全的主要障碍因子具有明显的时间变化特征。[结论]安徽省耕地资源安全情况不容乐观,各地区需因地制宜,提高安全保障程度。

    Abstract:

    [Objective] The spatio-temporal characteristics of cultivated land resources security in Anhui Province in recent 14 years were illustrated, in order to provide directions for economic development and land resource protection.[Methods] In terms of 27 selected indicators from three aspects as quantitative security, qualitative security and ecological security, an integrated assessment system of cultivated land resources was established.[Results] ① The quantitative and qualitative security of cultivated land resources showed decreasing and increasing trends, respectively. Ecology security remained stable, and the integrated security showed an upward trend. ② The spatial characteristics of quantitative security showed high values in the east and North of Anhui Province and low values in the South of Anhui Province; the values of qualitative security were higher in the middle and south of Anhui Province; moreover, the ecological security in the middle and south regions was lower than that in other areas; the spatial characteristics of integrated security of cultivated land resources was similar to that of quantitative security. The cities with low integrated security levels presented a characteristics of concentration to dispersal, and it was opposite for the high integrated security level cities. ③ The main obstacle factors of quantitative, qualitative and ecological security of cultivated land resources showed an obvious variation features.[Conclusion] The situation of the cultivated land resources security in Anhui Province was still severe. Appropriate method, therefore, should be taken to improve the level of security.

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吴艳飞,徐羽,徐刚.近14年安徽省耕地资源安全的时空特征[J].水土保持通报,2017,37(6):236-241

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  • 收稿日期:2016-09-11
  • 最后修改日期:2016-09-24
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  • 在线发布日期: 2018-01-19
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