三江源产草量（2000-2016）

该数据包含的是2000-2016年三江源产草量数据，单位kg/(ha·a)。通过结合1 : 100万比例尺的草地类型分布图，综合考虑研究区草地类型的空间分布、气候因素、地形地貌、土壤情况等，以及采样点的分布，将研究区草原划分为高寒草甸、高寒草原、温性草原三个草原区。基于已建立的NDVI与对应样方产草量干重的数据库，分区构建地面–遥感相结合的产草量估算模型，得到产草量。三江源地区是我国重要的江河发源地，分析该地区多年草地产草量的时空动态变化，探讨产草量与其他环境因子的关系，对于在未来气候变化情景下合理管理草地、指导畜牧业发展具有重要意义。This dataset contains grassland yield data of the Three-River Source Region from 2000 to 2016, with the unit of kg/(ha·a). By integrating the 1:1,000,000-scale grassland type distribution map, and comprehensively considering the spatial distribution of grassland types, climatic factors, topography, soil conditions, as well as the distribution of sampling points in the study area, the grasslands in the region were divided into three grassland zones: alpine meadow, alpine steppe, and temperate steppe. Based on the established database correlating NDVI with the dry weight of grass yield from corresponding sampling quadrats, we constructed integrated ground-based and remote sensing grass yield estimation models for each zone to generate the final grass yield dataset. As an important source of major rivers in China, analyzing the spatiotemporal dynamics of multi-year grassland yield in the Three-River Source Region and exploring the relationship between grass yield and other environmental factors is of great significance for the rational management of grasslands and the guidance of animal husbandry development under future climate change scenarios.

搜集汇总

背景与挑战

背景概述

该数据集包含2000-2016年三江源地区产草量数据，空间分辨率为0.01° - 0.05°，基于NDVI与地面样方数据结合建立的估算模型生成，单位为kg/(ha·a)。数据对研究草地时空动态变化、指导畜牧业发展具有重要价值。