Global Distribution and Density of Constructed Impervious Surfaces.
Global Distribution and Density of Constructed Impervious Surfaces.
复制标题
构造不透水的全球分布和密度。
DOI：
10.3390/s7091962
复制
发表时间：
2007-09-21
期刊：
影响因子：
--
通讯作者：
Nemani R
中科院分区：
文献类型：
--
作者：
Elvidge CD;Tuttle BT;Sutton PC;Baugh KE;Howard AT;Milesi C;Bhaduri B;Nemani R
我们提出了第一个全球库存的空间分布和密度的建筑不透水表面面积（伊萨）。伊萨的示例包括道路、停车场、建筑物、车道、人行道和其他人造表面。虽然需要高空间分辨率来观察这些特征，但新产品基于伊萨的两个粗略分辨率指标（卫星观测到的夜间灯光亮度和人口计数）报告了一平方公里网格上伊萨的估计密度。该模型使用美国地质调查局的30米分辨率伊萨进行校准。名义上，产品是2000-01年的，因为夜间灯光和参考数据都来自这两年。我们发现，美国陆地面积的1.05%是不透水表面（83，337平方公里），世界陆地面积的0.43%（579，703平方公里）是建造的不透水表面。中国拥有的伊萨比任何其他国家都多（87，182平方公里），但人均伊萨只有67平方米，而美国为297平方米。伊萨在世界主要流域的分布表明，伊萨损害的流域主要集中在美国，欧洲，日本，中国和印度。作者认为，改进该产品的下一步是包括来自世界各地更多地区的参考伊萨数据。
We present the first global inventory of the spatial distribution and density of constructed impervious surface area (ISA). Examples of ISA include roads, parking lots, buildings, driveways, sidewalks and other manmade surfaces. While high spatial resolution is required to observe these features, the new product reports the estimated density of ISA on a one-km2 grid based on two coarse resolution indicators of ISA – the brightness of satellite observed nighttime lights and population count. The model was calibrated using 30-meter resolution ISA of the USA from the U.S. Geological Survey. Nominally the product is for the years 2000-01 since both the nighttime lights and reference data are from those two years. We found that 1.05% of the United States land area is impervious surface (83,337 km2) and 0.43 % of the world's land surface (579,703 km2) is constructed impervious surface. China has more ISA than any other country (87,182 km2), but has only 67 m2 of ISA per person, compared to 297 m2 per person in the USA. The distribution of ISA in the world's primary drainage basins indicates that watersheds damaged by ISA are primarily concentrated in the USA, Europe, Japan, China and India. The authors believe the next step for improving the product is to include reference ISA data from many more areas around the world.