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-  2014 

都市农业景观破碎化过程对生态系统服务价值的影响——以西安市为例

DOI: 10.11821/dlyj201406010

Keywords: 都市农业景观,破碎化过程,生态系统服务,西安市

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Abstract:

摘要: 利用西安市土地利用解译图及社会经济数据,在界定都市农业景观的前提下,分析西安市都市农业景观破碎化过程,在此基础上分析都市农业景观破碎化对生态系统服务价值的影响。结果表明:① 1999-2011 年,西安市都市农业景观的斑块密度、分离度指数增加,都市农业景观呈破碎化趋势;② 都市农业景观分离度与都市农业生态系统服务总价值及各项价值均呈较强的负相关关系;破碎化过程中废物处理及土壤形成价值减少量最大,同时食物生产价值减少率最大,减少了12.73%,娱乐文化减少的价值量及减少率最小,为1.93%;③ 耕地、林地、水域呈景观破碎化趋势,而园地聚集度上升,同时耕地、林地、水域的生态系统服务价值下降,园地生态系统服务价值增加

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