浙江农林大学学报2024，Vol.41Issue(2)：379-386,8.DOI:10.11833/j.issn.2095-0756.20230417
计划烧除对滇中云南松林土壤养分的影响
Effect of prescribed burning on soil nutrient content of Pinus yunnanensis forest in central Yunnan Province
摘要
Abstract
[Objective]This study aims to analyze the impact of evaluate prescribed burning and intervals on soil chemical stoichiometry of carbon(C),nitrogen(N),phosphorus(P),and potassium(K)in Pinus yunnanensis forest.[Method]The study object was P.yunnanensis forest in Xinping Zhaobi Mountain,Yuxi in central Yunnan Province.Soil samples of 0-10 and 10-20 cm soil layers were collected separately from unburned plots(control),plots of 1 year after prescribed burning(T1)and plots of 3 years after prescribed burning(T2),respectively,and the mass fractions of soil C,N,P,and K were measured.The impact of prescribed burning on soil stoichiometry in P.yunnanensis forest was studied.Analysis of variance(ANOVA),Spearman's correlation analysis and principal component analysis(PCA)were used to investigate the effects of different burning intervals on the soil stoichiometry.[Result]Compared with the control,there was no significant change in soil pH in both soil layers(0-10 and 10-20 cm)of T1 plot,while there was a significant increase in soil pH in both layers of T2 plot(P＜0.01).In the 0-10 and 10-20 cm soil layers of T1 and T2 plots,there was no significant variation in total carbon(TC),organic carbon(SOC),total nitrogen(TN),and hydrolysable nitrogen(AN).The available phosphorus(AP)in the 0-10 cm soil layer of T2 plot significantly decreased(P＜0.05),while the available potassium(AK)in both soil layers significantly increased(P＜0.05).The soil carbon-to-nitrogen(C/N)ratio significantly increased only in the 10-20 cm soil layer of T2 plot(P＜0.05).[Conclusion]The impact of the prescribed burning on the quality fraction of soil nutrients in the study area is influenced by such as factors burning interval and soil depth.Both interval time after prescribed burning has no significant impact on C and N contents of soil in P.yunnanensis forest.However,burning has a larger effect on soil pH,C/N ratio,AP,and AK.[Ch,3 fig.3 tab.34 ref.]关键词
计划烧除/土壤养分元素/烧除后间隔时间/云南松林/滇中地区Key words
prescribed burning/soil nutrients/interval after burning/Pinus yunnanensis forest/central Yunnan region分类
农业科技引用本文复制引用
潘慧萍,金建华,张山云,杨菡,杨爱玲,王秋华,李晓娜..计划烧除对滇中云南松林土壤养分的影响[J].浙江农林大学学报,2024,41(2):379-386,8.基金项目
国家自然科学基金资助项目(31901322,32360395) （31901322,32360395）
