干旱区地理2025，Vol.48Issue(9)：1555-1566,12.DOI:10.12118/j.issn.1000-6060.2024.759
2001-2024年锡林郭勒盟草原净初级生产力时空特征及对影响因子的响应
Spatiotemporal characteristics of net primary productivity and its response to influencing factors in Xilin Gol League grassland from 2001 to 2024
摘要
Abstract
CO2 emission reduction is a globally shared concern today,and the voluntary carbon offset(or seques-tration increase)market for natural ecosystems,along with its operational models,holds immense development potential.As one of the key natural carbon sinks,grasslands have received widespread attention.This study focus-es on the Xilin Gol League in Inner Mongolia of China as the research area,utilizing the Google Earth Engine platform to obtain MODIS data,meteorological reanalysis data,and vegetation coverage data.Based on the Carn-egie-Ames-Stanford approach(CASA)model,the spatiotemporal dynamics of grassland net primary productivity(NPP)from 2001 to 2024 in Xilin Gol League were analyzed.The study investigates the impact of land cover change and climate change on grassland NPP through land use dynamics,partial correlation,and contribution in-dex methods,providing a reference for achieving carbon peak and carbon neutrality goals in the region.The re-sults indicate that:(1)From 2001 to 2024,grassland NPP in Xilin Gol League showed a fluctuating upward trend,with a multi-year average of 302.86 g C∙m-2∙a-1 The annual NPP distribution displayed a trend of gradual de-crease from the northeast to the southwest.(2)The grassland NPP in Xilin Gol League was mainly driven by changes in land use and climate,with a minor influence from geographic factors,with precipitation having the greatest contribution,reaching 0.84.(3)Over the years,the impact of climate change on grassland NPP gradually outweighed that of land use change,especially in meadow steppe,typical steppe,and desert steppe,where contri-bution values reached 96.01%,63.97%,and 93.05%,respectively.关键词
净初级生产力/气候变化/驱动因素/CASA模型/MODIS数据/锡林郭勒盟Key words
net primary productivity/climate change/influencing factors/CASA model/MODIS data/Xilin Gol League引用本文复制引用
张飞,李建,李慧融,谢涛,张雪红,王超,白淑英,宋正姗..2001-2024年锡林郭勒盟草原净初级生产力时空特征及对影响因子的响应[J].干旱区地理,2025,48(9):1555-1566,12.基金项目
国家自然科学基金项目(42171346) （42171346）
风云卫星应用先行计划(FY-APP-2024.0303) （FY-APP-2024.0303）
江苏省自然科学基金项目(BK20241053) （BK20241053）
内蒙古自治区气象局科技创新项目(nmqxkjcx202422)资助 （nmqxkjcx202422）
