西南林业大学学报2024，Vol.44Issue(3)：77-85,9.DOI:10.11929/j.swfu.202303033
毛竹扩张对幕阜山区森林土壤碳氮磷含量及生态化学计量特征的影响
Effects of Moso Bamboo Expansion on Soil Carbon,Nitrogen,Phosphorus and Ecological Stoichiometry Characteristics of Forest in Mufu Mountain Area
摘要
Abstract
To study the effect of moso bamboo expansion on soil carbon(C),nitrogen(N)and phosphorus(P)into different stands,we selected 2 continuous interfaces from a moso bamboo stand to its surrounding Chinese fir forest and broad-leaved forest in Mufu mountain area as the research objects.The contents of SOC,TN,TP,NO3--N,NH4+-N and their ecological stoichiometric ratios in different forest types were analyzed.The results showed that the contents of SOC,TN,TP and NH4+-N decreased gradually with the increase of soil depth under the 2 expansion patterns,except the content of NO3--N changed irregularly.During the expansion of moso bam-boo to Chinese fir forest,there was no significant difference in SOC,TN and TP contents in the same soil layer.However,during the expansion of bamboo to broad-leaved forest,the SOC and TN contents in 0-10 cm soil layer of bamboo forest decreased by 27.71％and 30.45％compared to those in broad-leaved forest and d-ecrease 36.67％and 31.11％compared to bamboo broad-leaved mixed forest,while there was no significant difference in 10-20 cm and 20-30 cm soil layers.Moso bamboo expansion had no significant effect on TP content in each soil layer of Chinese fir forest and broad-leaved forest.The expansion of moso bamboo to Chinese fir forest increased NH4+-N content both in 0-10 cm and 20-30 cm soil layers,and the expansion to broad-leaved forest increased NH4+-N content in 10-20 cm soil layer and NO3--N content in 20-30 cm soil layer.There was no significant ef-fect of moso bamboo expansion to Chinese fir forest on soil C/N,C/P and N/P,while the expansion to broad-leaved forest resulted in a significant decrease in N/P in 0-10 cm soil layer and a significant increase in C/N in 10-20 cm soil layer.In conclusion,the expansion of moso bamboo to Chinese fir forest had no significant effect on the SOC,TN and TP contents,but increased the content of NH4+-N in surface and deep soil layer.However,the expansion of moso bamboo to broadleaved forest resulted in a significant decrease in SOC and TN contents in surface soil,and a significant increase in NH4+-N contents in middle soil and NO3--N content in deep soil layer.关键词
毛竹扩张/杉木林/阔叶林/土壤养分/生态化学计量/幕阜山区Key words
Moso bamboo expansion/Chinese fir forest/broad-leaved forest/soil nutrient/ecological stoi-chiometry/Mufu mountain area分类
农业科技引用本文复制引用
王晓荣,胡兴宜,龚苗,辜忠春,戴薛,夏少丹,刘清平,牛红玉..毛竹扩张对幕阜山区森林土壤碳氮磷含量及生态化学计量特征的影响[J].西南林业大学学报,2024,44(3):77-85,9.基金项目
湖北省自然科学基金项目(2021CFB505)资助 （2021CFB505）
国家自然科学基金项目(31870416)资助. （31870416）
