北京山区土地利用转移的系统性和随机性

doi:10.6046/gtzyyg.2010.04.17

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从统计学的角度出发，通过深入分析土地利用转移矩阵，将北京山区土地利用转移过程分为系统转移和随机转移。从同时发生的系统性增加和系统性减少推断出土地利用变化的优势信息有：高覆盖度草地和其他林地转换为耕地；耕地和疏林地转换为其他林地；疏林地转换为高覆盖度草地；耕地和高覆盖度草地转换为水域；耕地转换为建设用地。其中耕地向其他林地和建设用地转移的面积都很大，且系统性转换优势明显；其他林地转换为耕地、疏林地转换为高覆盖度草地虽然不具有数量上的转换优势，但该转换属于很强的系统性转换。该方法能快速挖掘最具系统优势的土地利用转移信息，有助于科研人员将土地利用格局和变化过程联系起来，为土地资源管理提供有用信息。

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关键词 ：优势物种, 光谱鉴别方法, 光谱导数, 吸收特征

Abstract：

As an important part of Beijing’s suburbs, the mountainous area of Beijing has both the characteristics of metropolitan suburbs and the features of mountains, and so its land use pattern is different from other areas. Based on statistics, the authors separated land-use transformations of the mountainous area of Beijing to random and systematic transitions through an in-depth analysis of land use transition matrix. A land-use transition is random if a land-use category gains from other categories in proportion to the availability of those other losing categories, or if a category loses to other categories in proportion to the size of those other gaining categories. Any large deviation from those proportions is referred to as a systematic transition. From the concurrent incidence of systematic gains and losses, it is concluded that the most dominant signals of change find expression in the following aspects: the conversion of higher coverage grassland and other woodland to cropland, the conversion of cropland and sparse woodland to other woodland, the conversion of sparse woodland to higher coverage grassland, the conversion of cropland and higher coverage grassland to water areas and the conversion of cropland to built-up areas. The transition areas from cropland to other woodland and built-up areas are relatively large and have obvious advantages for systematic transitions. While the areas of transitions from other woodland to cropland and from sparse woodland to higher coverage grassland are relatively small, the transitions are still attributed to dominant signals of change. This method is simple and practical and enables scientists to focus their research on the most important land transitions, which will help in linking patterns to processes and in management of land resources.

Key words： Dominant vegetation Hyperspectral indexes Spectral derivation Absorbtion property

收稿日期: 2009-11-27 出版日期: 2011-08-02

:	TP 79
	P 271

基金资助:

国家科技支撑计划课题“水土保持调节功能时空数据集成与分析”(编号： 2006BAC08B0405)。

作者简介: 魏显虎（1978-），男，博士研究生，主要从事遥感图像处理、国土资源与生态环境遥感研究。

引用本文:

魏显虎, 张增祥, 胡顺光, 刘芳. 北京山区土地利用转移的系统性和随机性[J]. 国土资源遥感, 2010, 22(4): 77-84.
WEI Xian-Hu, ZHANG Zeng-Xiang, HU Shun-Guang, LIU Fang. Random and Systematic Land-use Transitions in Mountainous Area of Beijing. REMOTE SENSING FOR LAND & RESOURCES, 2010, 22(4): 77-84.

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https://www.gtzyyg.com/CN/10.6046/gtzyyg.2010.04.17 或 https://www.gtzyyg.com/CN/Y2010/V22/I4/77

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