广西林业科学2026，Vol.55Issue(2)：179-186,8.DOI:10.19692/j.issn.1006-1126.20260209
融安县杉木中龄林土壤化学性质与生态化学计量特征研究
Study on Soil Chemical Properties and Ecological Stoichiometric Characteristics of Middle-aged Cunninghamia lanceolata Plantations in Rong'an County
摘要
Abstract
In order to systematically evaluate degree of soil acidification and status of soil nutrient abundance or deficiency,and provide data basis for targeted cultivation of medium-diameter and large-diameter timbers and sustainable management of Cunninghamia lanceolata in Rong'an county,taking 15-year-old middle-aged C.lanceolata plantations distributed in 9 townships of Rong'an county as research objects,soil samples were collected from 0-20 and 20-40 cm soil layers for determination of relevant soil indicators and calculation of ecological stoichiometric ratios.Results showed that soil in study area was acidic,with pH values ranging from 4.40 to 5.66.Soil total nitrogen content in study area was generally at high level,and available nitrogen content in 0-20 cm soil layer was generally sufficient,but individual township exhibited low available nitrogen content in 20-40 cm soil layer.Soil total phosphorus content in study area was generally sufficient,but available phos-phorus content was extremely low.Potassium deficiency was observed in some townships.Soil C∶N,C∶P and N∶P in study area were low.N∶P ranged from 2.19 to 5.11,suggesting that soils in middle-aged C.lanceolata planta-tions might be limited by nitrogen.Soils in middle-aged C.lanceolata plantations in Rong'an county were se-verely acidified,with extremely low phosphorus availability and localized deficiencies in nitrogen and potassi-um supply.In order to improve soil quality for future cultivation of medium-diameter and large-diameter tim-bers,integrated measures such as acid reduction and phosphorus activation should be adopted.关键词
土壤/化学性质/生态化学计量/中大径材/杉木Key words
soil/chemical property/ecological stoichiometry/medium-diameter and large-diameter timbers/Cunninghamia lanceolata分类
农业科技引用本文复制引用
戴俊,周利玲,肖国兴,王何鸣剑,余齐援,杨建佳,唐建雄,陈琴..融安县杉木中龄林土壤化学性质与生态化学计量特征研究[J].广西林业科学,2026,55(2):179-186,8.基金项目
广西林科院研究团队项目(2024RT04) （2024RT04）
广西林业科技推广示范项目(2023GXLK15) （2023GXLK15）
国家重点研发计划子课题(2021YFD2201301-3) （2021YFD2201301-3）
