Soil nutrient content and stoichiometric characteristics of Dendrocalamus brandisii forests in different planting patterns
Year: 2026
Type: article
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.
DOI: 10.3724/aauj.2026014
Language: English
Subfield: Education
Field: Social Sciences
Domain: Social Sciences
SDGs: Life on land, Zero hunger
Open Access status: bronze
OpenAlex ID: W7128478259
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