草业学报2024，Vol.33Issue(3)：13-23,11.DOI:10.11686/cyxb2023150
灵武白芨滩不同年限柠条固沙林林下草本群落演替规律及机制
Succession mechanism and dynamics in artificial Caragana korshinskii sand-fixing forests of different ages in Baijitan of Lingwu
摘要
Abstract
This research explored the relationship between the succession sequence of the understory plant community and environmental factors in Caragana korshinskii plantations.We investigated the herbaceous communities in C.korshinskii forests of different ages(3,5,10,20,30,40,50,60 and 70 years)and determined the soil physical and chemical properties.Two-way indicator species analysis(TWINSPAN),detrended correspondence analysis(DCA)and redundancy analysis(RDA)were used for quantitative classification and sequencing.The relationship between community distribution and environmental factors was analyzed.It was found that:1)27 quadrats in nine plots were divided into a series of four community types by TWINSPAN:Corispermum mongolicum+Agriophyllum squarrosum community→Psammochloa villosa+Artemisia sphaerocephala community→Setaria viridis+Chenopodium album community→Artemisia scoparia+Stipa breviflora community.2)The results of TWINSPAN and DCA were consistent,and DCA further confirmed the rationality of the TWINSPAN classification.3)According to the RDA,soil organic carbon and soil pH value were the environmental factors that significantly affected the distribution of the herbage community under the C.korshinskii forest,explaining 19.3%and 13.6%,and contributing 37.5%and 26.5%(P<0.05).This research identifies the species succession and its driving factors in the understory herbaceous community in the sand-fixing forest of Baijitan.The results provide a theoretical basis for desertification control and scientific management of the Baijitan nature reserve.关键词
白芨滩自然保护区/林下植被/排序/演替序列/环境因子Key words
Baijitan nature reserve/understory vegetation/ordination/succession sequence/environmental factors引用本文复制引用
于双,李小伟,王瑞霞,杨君珑,马龙..灵武白芨滩不同年限柠条固沙林林下草本群落演替规律及机制[J].草业学报,2024,33(3):13-23,11.基金项目
宁夏自然科学基金(2022AAC03080),宁夏高等学校一流学科建设(草学学科)资助项目(NXYLXK2017A01)和宁夏草原监测项目(2023)资助. （2022AAC03080）
