江西农业大学学报2026，Vol.48Issue(1)：153-164,12.DOI:10.3724/aauj.2026014
不同种植模式甜龙竹林土壤养分及化学计量特征
Soil nutrient content and stoichiometric characteristics of Dendrocalamus brandisii forests in different planting patterns
摘要
Abstract
[Objective]To investigate the effects of different planting patterns of Dendrocalamus brandisii on soil nutrient content and stoichiometric characteristics,and to provide a scientific basis for the sustainable management of D.brandisii forests.[Method]Four planting patterns were selected in Mengjiao,a village in Cangyuan County,Yunnan Province,for analysis:D.brandisii×Camellia sinensis(ZC),D.brandisii×Betula alnoides(ZX),D.brandisii×Juglans regia(ZH),and D.brandisii pure forest(CK).Soil samples from the 0-20 cm layer were collected to determine soil organic carbon(SOC),total nitrogen(TN),total phosphorus(TP),and other nutrient indicators.Soil nutrient content,stoichiometric characteristics,and their correlations were analyzed,and a principal component analysis(PCA was conducted to evaluate the comprehensive soil fertility of different planting patterns.[Result](1)Soil total nutrient content responded differently to planting patterns.SOC was significantly higher in ZC than in other patterns(P<0.05),while no significant differences were observed among the other three patterns(P>0.05).TN varied significantly across patterns(P<0.05).TP was significantly higher in CK and ZC than in ZX and ZH(P<0.05).Total potassium(TK)was the highest in CK,significantly exceeding other patterns(P<0.05),with no significant differences among ZC,ZX,and ZH(P>0.05).Soil available nutrients showed less sensitivity to planting patterns:available nitrogen(AN)was significantly higher in ZC than in others(P<0.05),while available phosphorus(AP)was the highest in ZH(P<0.05).Available potassium(AK)was the highest in CK,significantly surpassing ZX and ZH(P<0.05).(2)Soil stoichiometric ratios exhibited varied responses.C∶N,C∶P,and P∶K ratios showed no significant differences among patterns(P>0.05).C∶K,N∶P,and N∶K ratios were the highest in ZC.Specifically,C∶K in ZC was significantly higher than in CK(P<0.05)but not significantly different from ZX and ZH(P>0.05).N∶P and N∶K in ZC were significantly higher than in all other patterns(P<0.05).(3)Correlation analysis revealed strong relationships between soil nutrients and stoichiometric ratios.SOC was positively correlated with C∶P,C∶K,N∶P,and N∶K(P<0.01).TN showed positive correlations with N∶P,N∶K(P<0.01),and C∶K,P∶K(P<0.05).AN was positively correlated with N∶P,N∶K,and P∶K(P<0.01)and with C∶K(P<0.05).TP was positively correlated with P∶K(P<0.05).TK was negatively correlated with C∶K and P∶K(P<0.01)and with N∶K(P<0.05).AP and AK showed no significant correlations with stoichiometric ratios.(4)Principal component analysis indicated the comprehensive soil fertility ranking as:ZC>CK>ZX>ZH.[Conclusion]In summary,different mixed tree species create varying microenvironments within the forest,resulting in differences in soil nutrient profiles.The ZC pattern demonstrates the best overall soil fertility among the planting strategies studied.关键词
种植模式/甜龙竹林/土壤养分/化学计量特征Key words
planting patterns/Dendrocalamus brandisii forest/soil nutrients/stoichiometric characteristics分类
农业科技引用本文复制引用
李建伟,辉朝茂,包豪峰,李皓婷,朱书红,刘蔚漪..不同种植模式甜龙竹林土壤养分及化学计量特征[J].江西农业大学学报,2026,48(1):153-164,12.基金项目
"十四五"国家重点研发计划项目(2023YFD220120302)、云南省基础研究项目(202201AT070053)和云南省农业联合专项项目(202301BD070001-123) Project supported by the National Key R&D Program of China during the 14th Five-Year Plan Period(2023YFD 220120302),the Yunnan Provincial Basic Research Program(202201AT070053)and the Yunnan Provincial Ag-ricultural Joint Special Project(202301BD070001-123) 西南林业大学竹藤科学研究院运行经费项目同时对本研究给予了资助,谨致谢意! （2023YFD220120302）
