Spatiotemporal analysis of land use and land cover change in the Brazilian Amazon.

Spatiotemporal analysis of land use and land cover change in the Brazilian Amazon.
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DOI:
10.1080/01431161.2013.802825
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发表时间:
2013
影响因子:
3.4
通讯作者:
Hetrick S
Hetrick S
中科院分区:
工程技术3区
文献类型:
--
作者:
Lu D;Li G;Moran E;Hetrick S

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本文提供了一个比较分析的土地利用和土地覆被(LULC)的变化与不同的生物物理环境在巴西亚马逊河流域的三个研究领域在多个尺度上,从每像素,多边形,普查部门,研究区。利用1990/1991年、1999/2000年和2008/2010年获取的陆地卫星图像,采用分类后比较方法研究了LULC变化轨迹。一个分类系统,包括六个类-森林,稀树草原,其他植被(次生演替和人工林),农牧场,不透水的表面,和水,设计了这项研究。一种基于层次的分类方法被用来将陆地卫星图像分类成专题地图。本研究显示了不同的时空变化模式,组成和速率之间的三个研究领域,并指出在多尺度上分析LULC变化的重要性。整个研究区域的LULC随时间变化分析提供了变化趋势的总体情况,但详细的变化轨迹及其空间分布可以在每个像素尺度上更好地进行检查。多边形尺度的LULC变化提供了斑块大小随时间变化的信息,而人口普查部门尺度的LULC变化则提供了关于人类活动(例如,城市扩张、道路和土地利用历史)影响LULC变化模式和速率。这项研究表明,有必要在多个尺度上实现变化检测,以更好地了解LULC变化模式和速率的机制。
This paper provides a comparative analysis of land use and land cover (LULC) changes among three study areas with different biophysical environments in the Brazilian Amazon at multiple scales, from per-pixel, polygon, census sector, to study area. Landsat images acquired in the years of 1990/1991, 1999/2000, and 2008/2010 were used to examine LULC change trajectories with the post-classification comparison approach. A classification system composed of six classes – forest, savanna, other-vegetation (secondary succession and plantations), agro-pasture, impervious surface, and water, was designed for this study. A hierarchical-based classification method was used to classify Landsat images into thematic maps. This research shows different spatiotemporal change patterns, composition and rates among the three study areas and indicates the importance of analyzing LULC change at multiple scales. The LULC change analysis over time for entire study areas provides an overall picture of change trends, but detailed change trajectories and their spatial distributions can be better examined at a per-pixel scale. The LULC change at the polygon scale provides the information of the changes in patch sizes over time, while the LULC change at census sector scale gives new insights on how human-induced activities (e.g., urban expansion, roads, and land use history) affect LULC change patterns and rates. This research indicates the necessity to implement change detection at multiple scales for better understanding the mechanisms of LULC change patterns and rates.
使用卫星图像在巴西亚马逊中的土地使用/覆盖分类。
DOI: 10.1590/s0100-204x2012000900004
发表时间: 2012-09
影响因子: 0.8
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发表时间: 2008-06-16
影响因子: 13.5
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发表时间: 1994-05-01
期刊: BIOSCIENCE
影响因子: 10.1
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影响因子: 1.3
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影响因子: 1.7
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