生态学杂志2025，Vol.44Issue(4)：1135-1143,9.DOI:10.13292/j.1000-4890.202504.009
毛竹根际土壤磷组分对氮和生物炭添加的响应
Responses of phosphorus fractions in rhizosphere soil of Moso bamboo to nitrogen and biochar additions
摘要
Abstract
Moso bamboo(Phyllostachys edulis)forests,an important forest resource in subtropical China,are fa-cing phosphorus(P)limitation and nitrogen(N)-P imbalance caused by N deposition.Although biochar has the potential to improve soil quality,its role in addressing N-induced P limitation is still unclear.We investigated the main and interactive effects of N(0,30,and 90 kg N·hm-2·a-1)and biochar(0,20,and 40 t·hm-2)addi-tion on P fractions(CaCl2-P,Citrate-P,Enzyme-P,and HCl-P)in the rhizosphere soil of Moso bamboo forests.The results showed that the addition of N or biochar alone significantly increased Citrate-P,available phosphorus,contents and microbial biomass phosphorus in rhizosphere soil,but significantly decreased soil pH(P＜0.05).Un-der the conditions of N addition,biochar addition significantly increased rhizosphere soil CaCl2-P,Citrate-P,and Enzyme-P contents(P＜0.05).Under the conditions of biochar addition,N addition significantly increased rhizo-sphere soil CaCl2-P,Citrate-P contents,and their proportions,but significantly decreased soil pH(P＜0.05).There was a significant negative correlation between soil pH and CaCl2-P or Citrate-P content in the rhizosphere soil(P＜0.05).The activity of acid phosphatase was a key driver affecting the content of Enzyme-P.In summary,bio-char addition can alleviate N-induced P limitation by increasing soil P availability.These findings provide a scienti-fic reference for the sustainable management of Moso bamboo forests under the context of global change.关键词
毛竹林/磷组分/生物炭/氮添加/酶活性Key words
Moso bamboo/phosphorus fraction/biochar/nitrogen addition/enzyme activity引用本文复制引用
王潇,王艺雄,季杭翔,施曼,王会来,宋新章,李全..毛竹根际土壤磷组分对氮和生物炭添加的响应[J].生态学杂志,2025,44(4):1135-1143,9.基金项目
国家自然科学基金项目(32125027和31930075)、浙江省自然科学基金资助项目(LQ23C160006)和浙江农林大学人才启动项目(2022LFR006和2021LER060)资助. （32125027和31930075）
