中国30m分辨率的降雨侵蚀力图（1981-2010年）

本数据集表示了中国范围内多年平均年降雨侵蚀力（单位：MJ•mm/(ha•h•a)，即[兆焦耳•毫米/(公顷•小时•年)]）。利用全国范围内603个气象站1981-2010年逐日降水量资料，运用降雨侵蚀力日模型计算多年平均年降雨侵蚀力，并利用克里金插值方法进行空间内插，得到全国范围内多年平均年降雨侵蚀力。其数据格式为ESRI-grid格式，空间坐标系采用WGS1984标准，空间精度为30m*30m，全国范围内共分为1024幅。数据集共包括黑龙江、新疆等33个省（市、区）最小粒度数据集。

This dataset presents the multi-year average annual rainfall erosivity across China, with the unit of MJ·mm/(ha·h·a) (i.e., Megajoule·millimeter/(hectare·hour·year)). It was developed using daily precipitation data from 603 meteorological stations nationwide during 1981–2010. The daily rainfall erosivity model was employed to calculate the multi-year average annual rainfall erosivity, followed by spatial interpolation via the Kriging method to generate the nationwide multi-year average annual rainfall erosivity grid data. The data is stored in ESRI-Grid format, adopts the WGS1984 spatial coordinate system, has a spatial resolution of 30m × 30m, and is divided into 1024 tiles across the entire country. The dataset covers the finest-grained data for 33 provinces, municipalities and autonomous regions including Heilongjiang, Xinjiang and others.

搜集汇总

背景与挑战

背景概述

该数据集提供了中国1981-2010年间30米分辨率的降雨侵蚀力空间分布图，基于全国603个气象站数据通过克里金插值方法生成，适用于水土保持等地理科学研究。数据采用ESRI-grid格式存储，空间参考为WGS1984坐标系，具有较高的空间精度和质量可靠性。