中国稳态硫沉降临界负荷和氮沉降临界负荷

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、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，通过栅格计算最后得到用稳态法确定的中国硫沉降临界负荷和氮沉降临界负荷。使用的模型为改进的简单质量平衡模型。

Digitized based on the 1:4,000,000-scale Soil Map of China and other relevant cartographic materials. Using ArcGIS 9.3, new attribute values (e.g., weathering rates, base cations in vegetation, nitrogen uptake rates, etc.) were assigned to the vector data based on the original vector and raster datasets. Subsequently, the vector attribute data was rasterized, and the critical loads of sulfur and nitrogen deposition for China, determined via the steady-state method, were finally derived through raster calculations. The model adopted for this workflow was the modified simple mass balance model.

搜集汇总

背景与挑战

背景概述

该数据集提供了2009年中国稳态硫沉降和氮沉降的临界负荷数据，基于1:400万《中国土壤图》数字化，使用arcgis9.3软件处理，数据质量良好。数据集由清华大学贡献，适用于地理学领域的研究。