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首页> 外文期刊>International journal of applied earth observation and geoinformation >GlobeLand30 maps show four times larger gross than net land change from 2000 to 2010 in Asia
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GlobeLand30 maps show four times larger gross than net land change from 2000 to 2010 in Asia

机译:Globeland30地图显示比亚洲2000年至2010年的净土地更大的四倍

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摘要

This article uses the GlobeLand30 maps of land cover to characterize the difference between years 2000 and 2010 in Asia. Methods of Intensity Analysis and Difference Components dissect the transition matrix for nine categories: Barren, Grass, Cultivated, Forest, Shrub, Water, Artificial, Wetland and Ice. Results show that Barren, Grass, Cultivated, and Forest each account for more than 21% of Asia at both 2000 and 2010, while transitions among those four categories account for more than half of the temporal difference. Nearly ten percent of Asia shows overall temporal difference, which is the sum of three components: quantity, exchange and shift. Quantity accounts for less than a quarter of the temporal difference, while exchange accounts for three quarters of the temporal difference. The largest quantity components at the category level are a net gain of Barren and net losses of Grass and Shrub. Shrub demonstrates the most intensive loss and gain relative to a category's size. The largest and most intensive transitions to Barren are from Grass and Shrub. The largest and most intensive transition to Artificial is from Cultivated. Error information is not available for GlobeLand30 concerning 2000 or temporal change, but a confusion matrix is available for the global extent at 2010. This article applies methods to interpret the difference between two time points when a confusion matrix is available for only the latter time point. If the 2010 global confusion matrix reflects errors in Asia, then such errors could help to explain some of the gross gain of Barren and the counter-intuitive loss of Artificial. If the GlobeLand30 data indicate true change, then gross change in Asia is 4.4 times larger than net change.
机译:本文使用全球陆地30地图,以表征亚洲2000年和2010年之间的差异。强度分析方法和差异组件对九个类别的过渡矩阵分析:贫瘠,草,栽培,森林,灌木,水,人造,湿地和冰。结果表明,在2000年和2010年,贫瘠,草,培养和森林每次占亚洲的21%以上,而这四个类别的转型则占时间差异的一半以上。近10%的亚洲显示了整体时间差异,这是三个组件的总和:数量,交换和转变。数量占时间差异的不到四分之一,而交换账户的时间差异为四分之三。类别级别的最大数量成分是草和灌木的贫瘠和净损失的净收益。灌木展示了相对于类别规模最强烈的损失和增益。对贫瘠的最大和最密集的过渡都来自草和灌木。对人工的最大和最密集的过渡是从培养的。关于2000或时间变化的全球范围内的全球范围内没有出现错误信息,但在2010年的全球范围内可用。本文适用方法来解释仅当混淆矩阵仅适用后一个时间点时的两个时间点之间的差异。如果2010年全球混乱矩阵反映了亚洲的错误,那么这种错误可以有助于解释贫瘠的一些总增长和人造的反向直观丧失。如果Globeland30数据表明真正的变化,那么亚洲的总变化比净变化大4.4倍。

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