内蒙古大兴安岭森林固碳能力时空变化及气象因素影响分析  

The Research of Spatial and Temporal Variation Characteristic andMeteorological Influencing Factors of Forest Carbon Sequestration CapacityIn Great Xing'an Mountains

作　　者：曲学斌 王雅莹 李丹[2] 赵岳冀 张岚彪 QU Xuebin;WANG Yaying;LI Dan;ZHAO Yueji;ZHANG Lanbiao(Hulun Buir Meteorological Bureau,Inner Mongolia 021008,China;Center of Ecology and Agricultural Meteorology of Inner Mongolia,Hohhot 010050,China)

机构地区：[1]呼伦贝尔市气象局,内蒙古呼伦贝尔021008 [2]内蒙古自治区生态与农业气象中心,内蒙古呼和浩特021008

出　　处：《沙漠与绿洲气象》2024年第6期117-123,共7页Desert and Oasis Meteorology

基　　金：内蒙古自治区自然科学基金(2024LHMS0412,2024MS04007和2023QN05021);内蒙古自治区气象局创新项目(nmqxkjcx202319)。

摘　　要：为了更好地开展内蒙古大兴安岭森林固碳能力评估和持续性保护工作,利用净生态系统碳交换量数据和气象观测数据,对大兴安岭森林的净生态系统生产力(Net Ecosystem Productivity,NEP)时空变化及其气象影响因素进行分析。研究表明:1999—2019年,大兴安岭森林NEP为252.4 g C·m^(-2)a^(-1),年变化趋势平均为0.1 g C·m^(-2)a^(-1),整体呈稳定的碳汇功能。年内的NEP存在明显的碳源、碳汇季节性转换,仅在5—8月呈现碳汇,其余月份为碳源。气温与NEP在非生长季普遍呈显著负相关,而在生长季普遍呈显著正相关,且生长季最高气温对NEP的影响高于平均气温和最低气温。NEP在生长季普遍与降水呈显著负相关、与日照呈显著正相关,干旱对大兴安岭森林的固碳能力影响不大。In order to better carry out the evaluation and sustainable protection of forest carbon sequestration capacity in great xing'an Mountains in Inner Mongolia,using the net ecosystem carbon exchange data and meteorological observations to analyze the net ecosystem productivity of forest in great xing'an Mountains in Inner Mongolia.The results showed that from 1999 to 2019,the annual average NEPof great xing'an Mountains was 252.4 gC·m^(-2)a^(-1),and its average annual trend is 0.1gC·m^(-2)a^(-1),indicating a stable carbon sink function.There are obvious seasonal changes of carbon source and sink in NEP during the year.Only from May to August,there is a carbon sink,and the other months are carbon sources.There is a generally significantly negative correlation between temperature and NEP in nongrowing season,while a significantly positive correlation in growing season.Moreover,the influence of the maximum temperature on NEP in growing season is stronger than that of the mean temperature and the minimum temperature.During the growing season,NEP generally exhibits a significant negative correlation with precipitation and a positive correlation with sunshine hours.Drought has little effect on the carbon sequestration capacity of forests in great xing'an Mountains in Inner Mongolia.

关 键 词：大兴安岭 净生态系统生产力 时空变化 气候影响 

分 类 号：X171[环境科学与工程—环境科学]