青藏高原实际载畜量数据集（2000-2019）

实际载畜量指一定面积的草地，在一定的利用时间段内，实际承养的家畜数量。实际载畜量通过青藏高原各省（区）、市（州）的统计年鉴和畜牧管理部门提供的统计资料整理得到，在统计资料中有存栏量、出栏量、出栏率、年末牲畜数量等多种统计口径，本数据集根据各区域统计资料情况统一采用年末牲畜存栏量作为实际载畜量计算标准。利用统计年鉴中的实际载畜量与人口密度、NPP、地形起伏度进行多元线性回归，建立了实际载畜量空间化模型，得到实际载畜量（羊单位，MU/km2）栅格数据，时间序列为2000-2019年，空间分辨率为250米。利用青藏高原核心牧区的果洛州、玉树州、昌都市、那曲市、阿坝州、甘孜州、甘南州的统计资料验证表明，空间化的绝对误差平均为27.48 MU/km2，相对误差平均为13.79%。本数据集可以分析青藏高原实际载畜量的时空变化特征，评估青藏高原草地承载特征，提取过渡放牧区域，对青藏高原生态保护、监测及预警具有重要应用价值。Actual livestock carrying capacity refers to the actual number of livestock raised on a certain area of grassland within a specific utilization period. This dataset is compiled from statistical yearbooks and statistical materials provided by animal husbandry authorities of all provinces (regions), prefecture-level cities and autonomous prefectures in the Qinghai-Tibet Plateau. There are multiple statistical calibers in the statistical materials, including livestock on hand inventory, slaughtered livestock quantity, slaughter rate, and year-end livestock population. This dataset uniformly takes the year-end livestock on hand inventory as the calculation standard for actual livestock carrying capacity based on the availability of regional statistical data. A multiple linear regression was conducted using the actual livestock carrying capacity data from statistical yearbooks, combined with population density, Net Primary Productivity (NPP), and topographic relief, to establish a spatialization model for actual livestock carrying capacity, producing raster data of actual livestock carrying capacity (sheep unit, MU/km²) with a time series covering 2000 to 2019 and a spatial resolution of 250 meters. Validation was carried out using statistical data from the core pastoral areas of the Qinghai-Tibet Plateau, namely Golog Tibetan Autonomous Prefecture, Yushu Tibetan Autonomous Prefecture, Qamdo City, Nagqu City, Aba Tibetan and Qiang Autonomous Prefecture, Garzê Tibetan Autonomous Prefecture, and Gannan Tibetan Autonomous Prefecture, and the results showed that the average absolute error of the spatialized results was 27.48 MU/km², with an average relative error of 13.79%. This dataset enables analysis of the spatio-temporal variation characteristics of actual livestock carrying capacity on the Qinghai-Tibet Plateau, evaluation of the grassland carrying capacity of the plateau, and identification of overgrazing areas, holding important application value for ecological conservation, monitoring and early warning on the Qinghai-Tibet Plateau.