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首页> 外文期刊>GIScience & remote sensing >Intensity Analysis to communicate land change during three time intervals in two regions of Quanzhou City, China
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Intensity Analysis to communicate land change during three time intervals in two regions of Quanzhou City, China

机译：泉州市两个地区三个时间间隔内土地变化变化的强度分析

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摘要

Intensity Analysis is a mathematical framework to express differences within a set of categories that exist at multiple time points. The original version of Intensity Analysis communicated land change in one region during time intervals that have various durations. Our new manuscript modifies Intensity Analysis' equations and graphics to compare various regions during time intervals that have the same duration. This manuscript also combines Intensity Analysis with a method to express change as the sum of three components: quantity, exchange, and shift. We give two new insights concerning interpretation, which apply also to the original version of Intensity Analysis. First, we quantify the proportion of each change that is attributable to the start size of the category versus the deviation from a uniform intensity. Second, we clarify that a category's gain intensity expresses the percentage of the category's end size that derives from the gain during the time interval, while a category's uniform transition intensity indicates the aggressiveness of the category's gain. We illustrate the approach by comparing the Inland versus the Coastal regions of Quanzhou City, China. Inputs are GIS maps at 1995, 2000, 2005, and 2010 that show six land categories: Built, Cultivated, Forest, Garden, Unused, and Water. Change as a percentage of the Coastal region is greater than change as a percentage of the Inland region during each time interval. Exchange between categories is the largest component of change in each region during each interval. Cultivated loses and Built gains more intensively than the uniform change intensity in each region during each time interval. Built's gain targets Cultivated intensively in each region during each interval. Built's targeting explains most of the transition from Cultivated to Built in the Inland region, while Cultivated's size explains most of the transition from Cultivated to Built in the Coastal region. If the data are sufficiently accurate, then these results strengthen the concern for the transition from Cultivated to Built, as the loss of Cultivated land threatens food security in China. Scientists can apply Intensity Analysis by using free software available at .
机译：强度分析是一个数学框架，用于表达在多个时间点存在的一组类别中的差异。强度分析的原始版本传达了一个区域在不同持续时间的时间间隔内的土地变化。我们的新手稿修改了强度分析的方程式和图形，以比较持续时间相同的时间间隔内的各个区域。该手稿还结合了强度分析和一种将变化表示为三个组成部分的总和的方法：数量，交换和转移。我们给出了有关解释的两个新见解，这些见解也适用于强度分析的原始版本。首先，我们量化归因于类别起始大小的每个更改的比例与相对于统一强度的偏差。其次，我们要弄清类别的增益强度表示在该时间间隔内从增益得出的类别最终大小的百分比，而类别的均匀过渡强度表示类别增益的激进性。我们通过比较中国泉州市的内陆地区和沿海地区来说明这种方法。输入的是1995年，2000年，2005年和2010年的GIS地图，其中显示了六个土地类别：已建，耕地，森林，花园，未使用和水。在每个时间间隔内，变化占沿海地区的百分比大于变化变化占内陆地区的百分比。类别之间的交换是每个时间间隔内每个区域变化的最大组成部分。在每个时间间隔内，每个区域的耕种损失和建筑收益要比均匀变化强度更集中。建筑物的增益目标是在每个间隔中在每个区域集中耕种。 Built的目标解释了内陆地区从耕种到建筑的大部分过渡，而Cultivated的规模则解释了沿海地区从耕种到建筑的大部分过渡。如果数据足够准确，那么这些结果就加剧了人们对从耕地向建筑过渡的担忧，因为耕地的流失威胁着中国的粮食安全。科学家可以使用的免费软件来应用强度分析。

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  • 来源
    《GIScience & remote sensing》 |2020年第2期|21-36|共16页
  • 作者

  • 作者单位

    Hengyang Normal Univ Coll City & Tourism & HIST Hengyang Base UNESCO Dept Geog & Geog Informat Syst Hengyang Hunan Peoples R China;

    Clark Univ Sch Geog Worcester MA 01610 USA;

    Shanxi Wocheng Inst Ecol & Environm Big Data Res Ctr Taiyuan Shanxi Peoples R China;

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  • 正文语种 eng
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  • 关键词

    GIS; intensity Analysis; land change; Quanzhou City; China; region;

    机译：地理信息系统强度分析;土地变化;泉州市中国;地区;

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