气象与环境学报2024，Vol.40Issue(6)：70-77,8.DOI:10.3969/j.issn.1673-503X.2024.06.009
2001-2021年内蒙古东部森林生产力和碳素利用率时空变化及其对干旱的响应
Spatiotemporal variations of productivity and carbon use efficiency of forests in Eastern Inner Mongolia and their responses to drought from 2001 to 2021
摘要
Abstract
The present study selected MODIS data and meteorological observation data from Inner Mongolia Au-tonomous Region between 2001 and 2021,and analyzed the seasonal variations of the Wetness Index in this re-gion,as well as the response characteristics of the net primary productivity(NPP),gross primary productivity(GPP),and carbon use efficiency(NPP/GPP)of the forest ecosystem in eastern Inner Mongolia to drought.The results showed that the average NPP and GPP of the forests in eastern Inner Mongolia were 418.79 g C·m-2·a-1 and703.12 g C·m-2·a-1,respectively,and the NPP/GPP ratio was 0.59.The spatial distributions of NPP and GPP were higher in the north and lower in the south,while the NPP/GPP ratio decreased from northwest to south-east.From 2001 to 2021,the NPP and GPP of the forests in eastern Inner Mongolia shifted from a stable pattern to a fluctuating growth pattern,with the NPP/GPP ratio showing a weak increasing trend,indicating an enhanced car-bon sequestration capacity.In the eastern part of the Greater Khingan Range,the NPP and GPP showed an increas-ing trend,while the northern region showed a decreasing trend,and the overall change in NPP/GPP was relatively small.Summer drought had a stronger inhibitory effect on the increase of NPP and GPP,while autumn drought had a certain degree of influence on the NPP/GPP.关键词
总初级生产力(GPP)/净初级生产力(NPP)/碳素利用率(NPP/GPP)/湿润度指数Key words
Gross Primary Productivity(GPP)/Net Primary Productivity(NPP)/Carbon Use Efficiency(NPP/GPP)/Wetness Index分类
天文与地球科学引用本文复制引用
赵晶,李丹..2001-2021年内蒙古东部森林生产力和碳素利用率时空变化及其对干旱的响应[J].气象与环境学报,2024,40(6):70-77,8.基金项目
内蒙古自治区气象局科研项目(nmqxkjcx202319)和内蒙古自然科学基金(2024MS04007)共同资助. （nmqxkjcx202319）
