生态学杂志2025，Vol.44Issue(8)：2548-2556,9.DOI:10.13292/j.1000-4890.202508.028
不同恢复年限下辽东栎林土壤线虫群落特征
Soil nematode community characteristics in Quercus liaotungensis forest under different restoration years
摘要
Abstract
Vegetation restoration is considered as one of the most effective approaches for enhancing the ecological environment of the Loess Plateau.Investigating the variations in the abundance and structure of soil nematode com-munity within Quercus liaotungensis forest across different restoration durations,along with their underlying driving factors,can offer valuable theoretical support for scientific management of forest ecosystems on the Loess Plateau.With abandoning farmland as the control,changes of soil nematode community of Quercus liaotungensis with the stand age of 30,60,and 120 years were studied in Ziwu Mountain,Loess Plateau.The results showed that:(1)The dominant genera of soil nematode in Q.liaotungensis forest differed among restoration durations,with Filenchus being the co-dominant genus and Criconemoides becoming a new dominant genus in 60 and 120 years old planta-tions.(2)There was no significant change in total soil nematode density with increasing durations of restoration.Soil nematode community structure in 30 years old Q.liaotungensis forest was significantly different from abandoned farmland,60 and 120 years old Q.liaotungensis forest.(3)The proportion of bacterivores showed a trend of first increase and then decrease with increasing restoration years,while that of omnivores-predators showed a fluctuating increasing trend.The proportion of bacterivores significantly and positively correlated with litter biomass and domi-nant bacterial taxa.The proportion of fungivores was significantly positively correlated with soil ammonium nitrogen and significantly correlated with dominant bacterial and fungal taxa.The proportion of plant-parasitic nematodes was significantly and positively correlated with dominant bacterial and fungal taxa.The proportion of omnivores-predators was significantly and negatively correlated with the dominant fungal taxa.(4)Soil ammonium nitrogen,dissolved organic carbon,and bacterial community structure were the major factors influencing soil nematode community changes in Q.liaotungensis forest with different restoration years.Our results indicated that restoration duration sig-nificantly affected the structure of soil nematode communities in Q.liaotungensis forest,and that soil ammonium ni-trogen and dominant microbial taxa may be the main factors driving the changes in soil nematode community during vegetation restoration.关键词
森林恢复年限/辽东栎林/线虫群落/营养类群Key words
forest restoration duration/Quercus liaotungensis forest/nematode community/trophic group引用本文复制引用
马辉珍,闫本帅,王慧玲,吴春晓,王云霞,王国梁..不同恢复年限下辽东栎林土壤线虫群落特征[J].生态学杂志,2025,44(8):2548-2556,9.基金项目
十四五国家重点研发计划项目(2022YFF1300400)、国家自然科学基金专项类项目(42041005-3B)、国家自然科学基金项目(42077456)资助. （2022YFF1300400）
