A soil particle-size distribution dataset for regional land and climate modelling in China
A soil particle-size distribution dataset for regional land and climate modelling in China
复制标题
用于中国区域土地和气候模拟的土壤粒径分布数据集
DOI：
10.1016/j.geoderma.2011.01.013
复制
发表时间：
2012-02-01
期刊：
影响因子：
6.1
通讯作者：
Yuan, Hua
中科院分区：
文献类型：
--
作者：
Shangguan, Wei;Dai, Yongjiu;Yuan, Hua
基于美国农业部（USDA）中国区域土地和气候模型的标准，我们开发了一个多层土壤粒度分布数据集（砂、粉和粘土含量）。以中国1:10万比例尺土壤图和第二次全国土壤调查的8595个土壤剖面为出发点。由于图单元和剖面的土壤分类名称不完全相同，我们尽可能地将不一致的土壤剖面重新分类到相应的土壤类型中。采用多边形链接法，综合考虑土壤剖面与地图多边形之间的距离、剖面的样本量和土壤分类信息，将土壤剖面与地图多边形连接起来。为了进行比较，还通过将地图单元和具有相同土壤类型的土壤剖面连接起来，生成了土壤类型链接。所得土壤组分质量可靠。总体而言，地图多边形链接比土壤类型链接或协调世界土壤数据库提供更好的结果。该数据集分辨率为1公里，可用于区域尺度的陆地和气候模拟。(C) 2011 Elsevier B.V.版权所有
We developed a multi-layer soil particle-size distribution dataset (sand, silt and clay content), based on USDA (United States Department of Agriculture) standard for regional land and climate modelling in China. The 1:1,000,000 scale soil map of China and 8595 soil profiles from the Second National Soil Survey served as the starting point for this work. We reclassified the inconsistent soil profiles into the proper soil type of the map as much as possible because the soil classification names of the map units and profiles were not quite the same. The sand, silt and clay maps were derived using the polygon linkage method, which linked soil profiles and map polygons considering the distance between them, the sample sizes of the profiles, and soil classification information. For comparison, a soil type linkage was also generated by linking the map units and soil profiles with the same soil type. The quality of the derived soil fractions was reliable. Overall, the map polygon linkage offered better results than the soil type linkage or the Harmonized World Soil Database. The dataset, with a 1-km resolution, can be applied to land and climate modelling at a regional scale. (C) 2011 Elsevier B.V. All rights reserved.