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 given area of grassland within a specific utilization period. The actual livestock carrying capacity was compiled from statistical yearbooks and statistical data provided by animal husbandry management departments of each province (autonomous region), prefecture-level city and prefecture in the Qinghai-Tibet Plateau. There are multiple statistical metrics in the statistical data, such as livestock inventory, slaughter volume, slaughter rate, and year-end livestock population. This dataset uniformly adopts the year-end livestock inventory as the calculation standard for actual livestock carrying capacity based on the statistical data of each region. A multiple linear regression was conducted between the actual livestock carrying capacity from the statistical yearbooks, population density, Net Primary Productivity (NPP), and topographic relief to establish a spatialization model for actual livestock carrying capacity. Raster data of actual livestock carrying capacity (sheep unit, MU/km²) was obtained, with a time series from 2000 to 2019 and a spatial resolution of 250 meters. Validation using statistical data from the core pastoral areas of the Qinghai-Tibet Plateau, including Golog Prefecture, Yushu Prefecture, Qamdo City, Nagqu City, Aba Prefecture, Garzê Prefecture, and Gannan Prefecture, showed that the average absolute error of the spatialized results was 27.48 MU/km², and the average relative error was 13.79%. This dataset can be used to analyze the spatiotemporal variation characteristics of actual livestock carrying capacity on the Qinghai-Tibet Plateau, evaluate the grassland carrying capacity characteristics of the plateau, identify overgrazed areas, and has important application value for ecological protection, monitoring and early warning of the Qinghai-Tibet Plateau.

搜集汇总

背景与挑战

背景概述

该数据集提供了青藏高原2000-2019年实际载畜量的空间化产品，基于统计资料和多元线性回归模型生成，空间分辨率为250米。数据集可用于分析载畜量时空变化、评估草地承载能力及识别过度放牧区域，对生态保护和监测具有重要应用价值。