%0 Journal Article %T 基于Biome-BGC模型的1979~2018年青藏高原生态系统总初级生产力时空变化格局研究
Spatio-Temporal Variations Pattern Study of Gross Primary Productivity of 1979~2018 in the Qinghai-Tibet Plateau Based on the Biome-BGC Model %A 施翔 %A 廖玮杰 %A 尚明 %A 阮秀 %A 李世禧 %A 白磊 %J Geographical Science Research %P 457-468 %@ 2168-5770 %D 2024 %I Hans Publishing %R 10.12677/gser.2024.132044 %X 在气候变化的背景下，青藏高原作为“世界屋脊”，对全球气候变化具有重要影响。研究这一地区的碳循环格局对于实现中国碳中和目标至关重要。本研究使用高分辨率的中国气象数据集驱动Biome-BGC模型，分析了1979~2018年青藏高原总初级生产力(GPP)的时空变化以及其对环境因子的响应。研究结果显示，青藏高原大部分地区的平均GPP在0至250 gC·m^？²·yr^？¹之间，而东部部分地区GPP高达1250~1500 gC·m^？²yr^？¹。过去40年间，青藏高原GPP整体呈现上升趋势，BGC模型模拟的最大值达到约350 gC·m^？²·yr^？¹，与GLASS和微波遥感数据相似。不同植被类型的GPP都呈正增长趋势，其中森林的GPP最高，达974.45 gC·m^？²·yr^？¹，沙漠最低，仅28.07 gC·m^？²·yr^？¹。草地和灌木地随温度和降雨量上升而大幅增加GPP，达到1200 gC·m^？²·yr^？¹左右的峰值，而裸土呈现波动模式，峰值约70 gC·m^？²·yr^？¹。GPP的频率分布也随环境条件变化而变化。这些发现加深了我们对青藏高原GPP变化和植被对气候变化响应的理解。
Under climate change, the Qinghai-Tibet Plateau, known as the “Roof of the World”, plays a significant role in global climatic variations. Studying its carbon cycle patterns is crucial for achieving China’s carbon neutrality goals. This research, using high-resolution Chinese meteorological datasets to drive the Biome-BGC model, analyzed the spatial and temporal variations of the total gross primary productivity (GPP) of the Qinghai-Tibet Plateau from 1979 to 2018 and its response to environmental factors. The findings revealed that the average GPP in most areas of the plateau ranged from 0 to 250 gC·m^？2·yr^？1, with some eastern regions reaching as high as 1250~1500 gC·m^？2·yr^？1. Over the past 40 years, the plateau’s GPP generally showed an increasing trend, with the BGC model simulating a maximum GPP of around 350 gC·m^？2·yr^？1, consistent with GLASS and microwave remote sensing data. All vegetation types exhibited a positive growth trend in GPP, with forests recording the highest (974.45 gC·m^？2·yr^？1) and deserts the lowest (28.07 gC·m^？2·yr^？1). Grasslands and shrublands showed significant GPP increases with rising temperatures and precipitation, peaking around 1200 gC·m^？2·yr^？1, while bare soil displayed a fluctuating pattern, peaking at approximately 70 gC·m^？2·yr^？1. The frequency distribution of GPP also varied with environmental conditions. These results deepen our quantitative understanding of GPP changes and vegetation responses to climate change in the Qinghai-Tibet Plateau. %K 土地利用，草地，森林，CMFD，GPP
Land Use %K Grassland %K Forest %K CMFD %K GPP %U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=85776