世界林业研究2025，Vol.38Issue(6)：10-18,9.DOI:10.13348/j.cnki.sjlyyj.2025.0108.y
氮添加对人工林土壤磷组分的影响研究进展
Research Progress in Effects of Nitrogen Addition on Soil Phosphorus Fractions in Forest Plantations
摘要
Abstract
Phosphorus is a key limiting nutrient for plant growth in terrestrial ecosystems,particularly evident in highly weathered tropical and subtropical forests.Under the background of increasing nitrogen deposition globally,how to efficiently utilize the potential phosphorus source in soil has become a research hotspot to improve the productivity and ecological function of forest plantations.Understanding the effects of nitrogen addition on soil phosphorus components is of great significance for clarifying the mechanism of phosphorus cycle in forest plantations,evaluating its sustainability and guiding scientific management.This paper reviews the effects of nitrogen addition on soil phosphorus fractions and its driving mechanism,and introduces the application of Hedley phosphorus classification system to the characterization of soil phosphorus forms.The findings demonstrate that nitrogen addition mainly regulates soil labile phosphorus and moderately available phosphorus,and has a limited effect on difficult-to-use phosphorus.This process is driven by multiple mechanisms:at the abiotic level,nitrogen input causes soil acidification and changes the adsorption-desorption equilibrium of phosphorus by iron-aluminum oxides;at the biological level,the imbalance of nitrogen and phosphorus stoichiometry induces the transformation of microbial community structure and function,and phosphate-solubilizing microorganisms and mycorrhizal fungi regulate the spatial and temporal distribution of phosphorus through enzymatic reaction and mycelial expansion.Plants form synergistic interactions with microorganisms through active pathways such as community regeneration and succession,root strategy adjustment,secretion release,and root enzyme secretion,and jointly drive the activation and transformation of rhizosphere phosphorus.Future research will focus on how to optimize the simulation method of nitrogen deposition,analyze the mechanism of phosphorus cycling on aggregate scale,and explore the functional genes of phosphorus metabolism,so as to provide a scientific basis for the soil phosphorus management of forest plantation and sustainable forest management under the background of nitrogen deposition.关键词
氮添加/磷组分/非生物机制/生物机制Key words
nitrogen addition/phosphorus fraction/abiotic mechanism/biotic mechanism分类
农业科技引用本文复制引用
李静凯,朱丽琴,刘萍渝,肖铃莉,严文瑾,方芮,黄荣珍,樊后保..氮添加对人工林土壤磷组分的影响研究进展[J].世界林业研究,2025,38(6):10-18,9.基金项目
江西省自然科学基金面上项目"杉木人工林土壤团聚体磷组分及其微生物特征对长期氮添加的响应"(20242BAB25348) （20242BAB25348）
江西省自然科学基金重点项目"长期氮沉降背景下森林土壤GHGs排放时空变化及其微生物作用机制"(20232ACB205007) （20232ACB205007）
国家自然科学基金地区项目"林冠氮沉降与干旱胁迫对杉木人工林碳水关系的影响机制"(32460297) （32460297）
江西水利电力大学国家级大学生创新创业训练计划资助项目"长期氮添加对杉木人工林土壤团聚体磷组分和微生物特征的影响"(202511319005). （202511319005）
