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喀斯特石漠化演变胁迫变化关系及胁迫阈值模型研究——以广西都安为例 被引量:4

Study on Relation Between Evolution and Its Stress Factors of Karst Rocky Desertification and Its Stress Threshold Value Model——Taking Du'an of Guangxi as an Example
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摘要 本文以广西都安瑶族自治县的6个乡镇为例,运用回归统计原理和数学拟合方法建立胁迫阈值模型并求取胁迫阈值,然后通过胁迫阈值,选取1988、1999、2005三个时间段作为时间研究点,分别从时间序列和空间序列对6个研究点进行石漠化程度演变的研究,揭示了石漠化程度演变的规律。分析结果表明,人类不合理的干预是喀斯特土地石漠化发生的主导因素,为喀斯特石漠化规划治理提供了理论参考。 Taking six towns of Du'an of Guangxi as the example,stress threshold power model of rocky desertification evolution was established by the mathematics curve fitting.Stress threshold value was calculated by modeling analysis.The change law of rocky desertification level was revealed by studying the model of six towns in three phases.The results showed that the mankind unreasonable intervention is the dominant factor of rocky desertification.Its provide theory reference for rocky desertification area recovery plan.
出处 《农业现代化研究》 CSCD 北大核心 2011年第4期492-496,共5页 Research of Agricultural Modernization
基金 国家自然科学基金(编号:40871250) 广西自然科学基金重点项目(编号:0832021Z) 广西自然科学基金北部湾重大专项(编号:2011GXNSFE018003) 广西新世纪"十百千"人才工程专项(编号:2007224)
关键词 胁迫响应 胁迫阈值 阈值模型 石漠化 广西都安 stress response stress threshold value threshold value model rocky desertification Du'an of Guangxi
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