2010-2050年（40年）中国酸沉降阶段临界负荷（考虑土地利用类型）

以1:400万《中国土壤图》等为基础数字化，应用arcgis9.3以原始矢量和栅格数据为基础，赋予矢量数据新的属性值（如：风化速率、盐基饱和度、阳离子交换容量、植被的盐基粒子和氮吸收速率等）。然后，将矢量属性数据栅格化，并通过栅格计算得到2010-2050年（40年）中国酸沉降的阶段临界负荷（考虑土地利用情况）。使用改进的简单质量平衡模型，在原有模型基础上考虑了土壤酸化现状。Digitized based on the 1:4,000,000-scale Soil Map of China and other relevant datasets. Using ArcGIS 9.3 based on the original vector and raster data, new attribute values including weathering rate, base saturation, cation exchange capacity, base cation uptake and nitrogen uptake rates of vegetation, etc. were assigned to the vector data. Subsequently, the vector attribute data were rasterized, and the stage-wise critical loads of acid deposition in China over the 40-year period from 2010 to 2050 were calculated via raster computation, with land use conditions taken into consideration. The improved simple mass balance model was employed, which incorporated the current status of soil acidification based on the original model framework.

搜集汇总

背景与挑战

背景概述

该数据集提供了2010-2050年中国酸沉降阶段临界负荷的栅格数据，考虑了土地利用类型和土壤酸化现状，数据精度为0.1°×0.1°，适用于地理学和环境科学研究。数据基于1:400万《中国土壤图》等基础数据，使用arcgis9.3软件处理生成。