基于分形理论的喀斯特地区土地利用动态分析--以广西都安瑶族自治县为例

来源 :中国自然资源学会 | 被引量 : 0次 | 上传用户:woainami
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基于喀斯特地区的广西都安瑶族自治县1977年航片数据,1988年、1999年和2005年遥感影像数据,通过分形模型,计算出这4个时相各土地类型的分形维数和稳定性指数,结合28年来各土地类型的面积及斑块数量变化情况,定量分析其土地利用空间格局变化,并以此为依据,探讨各土地利用类型的复杂性和稳定性,分析喀斯特地区土地利用空间格局变化的原因.结果表明:28年来,各地类间的稳定性指数差别很大,同一地类不同时期的稳定性指数也有较大差别.这种变化与喀斯特地区先天脆弱的地质——生态背景有关外,还与各种垦荒、毁林、政策、管理保护等人为因素密切相关.
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