广西林业科学2024，Vol.53Issue(1)：71-79,9.DOI:10.19692/j.issn.1006-1126.20240110
广西喀斯特地区植被NPP对高低温气象灾害的响应
Responses of Vegetation NPP to High and Low Temperature Meteorological Disasters in Guangxi Karst Areas
摘要
Abstract
High and low temperature meteorological disasters create significant menace for rocky desertification control and vegetation restoration in Guangxi karst areas.Based on vegetation NPP and temperature data from 2000 to 2021 in Guangxi karst areas,change trends of vegetation NPP and effects of high and low temperature meteorological disasters on vegetation NPP were analyzed by linear trend method,GIS spatial analysis method and correlation analysis method.Results showed that vegetation NPP increased significantly with growth rate of 84.7 gC·m-2/10a and increasing area accounting for 90.4%from 2000 to 2021.Increasing trends were more ob-vious in northeast and center of study areas.All indexes of high temperature disasters had weakly negative ef-fects on vegetation NPP,including≥35℃days,≥37℃days,≥35℃accumulated temperature,≥37℃accumu-lated temperature and maximum temperature.For indexes of low temperature disasters,≤0℃accumulated tem-perature and minimum temperature had weakly negative effects and≤0℃days had weakly positive effect on vegetation NPP.High temperature disasters had relatively strong negative effects on vegetation NPP in middle of study area,while low temperature disasters had different negative effects on vegetation NPP among different indexes.High temperature disasters had greater negative effects on vegetation NPP of different forest species than low temperature disasters in terms of intensity and range.When high temperature disasters occurred,nega-tive effect intensity for bamboo forest NPP was greater than those for other forest species,and negative effect range for eucalypt forest NPP was greater than those for other forest species,with average area accounting for 78.0%.When low temperature disasters occurred,negative effect intensity for eucalypt forest NPP was greater than those for other forest species,and negative effect range for broad-leaved forest NPP was greater than those for other forest species,with average area accounting for 53.5%.关键词
喀斯特地区植被/NPP/气象灾害/高温/低温/广西Key words
vegetation in karst area/net primary productivity/meteorological disaster/high temperature/low temperature/Guangxi分类
林学引用本文复制引用
陈燕丽,李明志,谢映,莫伟华,罗永明..广西喀斯特地区植被NPP对高低温气象灾害的响应[J].广西林业科学,2024,53(1):71-79,9.基金项目
广西科技厅重点研发计划项目(桂科AB21238010,桂科AB20159022) （桂科AB21238010,桂科AB20159022）
广西自然科学基金项目(2020GXNSFAA238046) （2020GXNSFAA238046）
2021年度广西高校中青年教师科研基础能力提升项目(2021KY1922) （2021KY1922）
