Spatial distribution dataset of ecosystem quality in Sanjiangyuan National Park (2010-2020)

As one of the first batch and largest national parks in China, Sanjiangyuan National Park quantitatively evaluates the quality of the ecosystem. It not only clarifies the ecological background status, but also understands the ecological construction status of the national park, providing a healthy and stable ecosystem, coping with climate change, and warning ecological security risks for Sanjiangyuan National Park Mitigating the degradation process and other aspects can provide scientific basis and decision-making services. This dataset selects the vegetation coverage and net primary productivity of Sanjiangyuan National Park from 2010 to 2020 as key indicators to measure the ecosystem quality of Sanjiangyuan National Park. Among them, vegetation coverage refers to the proportion of the vertical projection of vegetation on the ground to the total area of the study area, calculated using the pixel binary model. Net primary productivity refers to the total capacity determined and the total amount of organic matter produced minus the amount consumed by vegetation respiration, which directly reflects the production capacity of vegetation communities under natural environmental conditions, characterizes the quality status of terrestrial ecosystems, and is calculated using the EC-LUE model developed based on vorticity related carbon flux site data. This dataset calculates the values of two indicators before and after the pilot implementation of the Sanjiangyuan National Park system (2016) (2010-2015 and 2016-2020), standardizes them, and finally merges them into the spatial distribution dataset of the ecosystem quality of Sanjiangyuan National Park. 

作为中国首批设立且规模最大的国家公园之一，三江源国家公园（Sanjiangyuan National Park）对生态系统质量开展定量评估。本次评估既明晰了生态本底现状，也掌握了国家公园的生态建设态势，可为三江源国家公园构建健康稳定的生态系统、应对气候变化、预警生态安全风险以及减缓生态系统退化进程等方面提供科学依据与决策支撑。本数据集选取2010至2020年三江源国家公园的植被覆盖度（Vegetation Coverage）与净初级生产力（Net Primary Productivity）作为衡量其生态系统质量的核心指标。其中，植被覆盖度指植被在地面的垂直投影面积占研究区总面积的比例，采用像素二分模型（Pixel Binary Model）进行计算。净初级生产力指植被在自然环境条件下所生产的有机物质总量减去自身呼吸消耗后的剩余总量，可直接反映植被群落的生产能力，表征陆地生态系统的质量状况，本数据集采用基于涡度相关碳通量站点（Vorticity-related Carbon Flux Site）数据构建的EC-LUE模型（EC-LUE Model）进行计算。本数据集分别计算了三江源国家公园体制试点实施前后（以2016年为节点，即2010-2015年与2016-2020年）两项指标的数值，经标准化处理后，最终整合为三江源国家公园生态系统质量空间分布数据集。

搜集汇总

背景与挑战

背景概述

该数据集为三江源国家公园2010年至2020年生态系统质量的空间分布数据集，通过植被覆盖度和净初级生产力作为关键指标进行定量评估。数据集以2016年国家公园体制试点实施为分界点，计算并标准化了两个时期的指标值，旨在为生态系统健康、气候变化应对和生态安全风险预警提供科学依据。