秦岭地区近20年来土地利用/土地覆盖变化及分析
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F301.24

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教育部优秀青年教师资助计划;中国科学院资助项目


Land-Use/Cover Change and Analysis from 1982 to 2002 in Qin Ling Area
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    摘要:

    秦岭地区是中国南北自然环境的天然分界线,是我国自然环境特征形成的一个重要组成部分。利用RS和GIS技术,分析了近20年来秦岭地区土地利用/土地覆盖在数量、结构、类型和空间分布上的变化情况。并对土地利用/土地覆盖变化的驱动力作了进一步探讨,得出以下结论:20年间秦岭地区土地利用/土地覆盖变化林地、草地和建设用地呈增长趋势,耕地、水域和未利用地则呈减少趋势,林地基本呈稳定状态,增幅仅为0.70%,但增加和减少的面积均较大;耕地减少的幅度较大。减幅为158838.02hm^2。主要转变为林地、草地和建设用地,并且多为优质良田;建设用地高速增长,增幅为47.46%,主要源于耕地,草地也呈增加态势,增幅为10.99%,主要源于林地与耕地;该区土地利用/土地覆盖变化的驱动力主要为:人口压力、经济因素、宏观政策等,且这3方面不是孤立的,而是相互影响、相互制约的,它们共同作用影响着秦岭地区的土地利用/土地覆盖的变化。

    Abstract:

    Area in Qinling is the natural boundary of the Chinese between south and north. It is the important forming constituent of our country natural environment character. By the help of RS and GIS, it analyzed the quantities, inner structure, types and spatial distribution features of the dynamic changes of Qinling area in last twenty years. Furthermore,the driving forces of the LUCC were analyzed in detail. The conclusions were. The woodland, grassland and construction land area were decreased. The cultivated land, water and no-use land were increased. The woodland area change was more steady, increased only by 0. 70%, but the area of change was greater ; The cultivated land area were decreased greatly, decreased by 158 838. 02 hm^2, which changed mainly into woodland, grassland and construction and had the high quality. The construction land area was increased greatly,increased by 47.46%, which came mainly from the cultivated land. The grassland area was increased too,increased by 10.99%, which came mainly from the woodland and cultivated land;The driving forces of the LUCC in Qinling were the economic development, the pressure of the increase of population and adjustment of the macro policy.

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胥彦玲,刘康,秦耀民,李怀恩,姜凌.秦岭地区近20年来土地利用/土地覆盖变化及分析[J].水土保持学报,2006,(2):144~148

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  • 收稿日期:2005-06-02
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