青藏高原防风固沙服务数据集（1990、2000、2010、2020）

防风固沙服务是指风蚀发生时植被对土壤的固定量。该数据集提供了1990、2000、2010和2020年青藏高原地区1km空间分辨率的防风固沙服务。该数据集综合生态系统类型、气候、土壤、地形等多源遥感数据资料，利用修正风蚀方程评估而成（数据单位：kg/m2/a）。利用沙尘暴频率站点观测数据（48个有效气象站）进行辅助验证，发现实际风蚀量与沙尘暴频率存在显著的相关性（R2=0.62, p<0.01）。通过数据公开和免费下载服务的方式，为青藏高原防风固沙服务动态变化的相关研究提供基础数据支持，也为该地区的可持续管理提供科学依据。Windbreak and sand fixation service is defined as the quantity of soil retained by vegetation during wind erosion events. This dataset provides windbreak and sand fixation service data for the Qinghai-Tibet Plateau with a spatial resolution of 1 km in the years 1990, 2000, 2010, and 2020. This dataset was developed by integrating multi-source remote sensing data and relevant information including ecosystem types, climate, soil, and topography, and was evaluated using the Revised Wind Erosion Equation (RWEQ) (Data unit: kg/m²/a). Subsidiary validation was conducted using observational sandstorm frequency data from 48 valid meteorological stations, which revealed a significant correlation between actual wind erosion amount and sandstorm frequency (R²=0.62, p<0.01). Through open data access and free download services, this dataset provides basic data support for studies on the dynamic changes of windbreak and sand fixation service on the Qinghai-Tibet Plateau, and offers scientific foundations for the sustainable management of this region.

搜集汇总

背景与挑战

背景概述

该数据集包含1990-2020年青藏高原防风固沙服务的1km分辨率栅格数据，采用修正风蚀方程评估，数据单位为kg/m2/a。数据集通过48个气象站观测验证，为研究青藏高原生态变化和可持续管理提供科学依据。