次生演替过程中土壤磷组分及有效性研究进展  

Changes in soil phosphorus fractions and its availability during secondary succession:a review

作　　者：张卓婷 陶然[1] 罗如熠 周俊[3] 李子豪 赵春章 庞学勇[2] ZHANG Zhuoting;TAO Ran;LUO Ruyi;ZHOU Jun;LI Zihao;ZHAO Chunzhang;PANG Xueyong(College of Ecology and Environment,Chengdu University of Technology,Chengdu,610059,China;CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization and Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province,Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610213,China;Chengdu Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610213,China)

机构地区：[1]成都理工大学生态环境学院,成都610059 [2]中国科学院成都生物研究所,中国科学院山地生态恢复与生物资源利用重点实验室,生态恢复与生物多样性保育四川省重点实验室,成都610213 [3]中国科学院水利部成都山地灾害与环境研究所,成都610213

出　　处：《应用与环境生物学报》2024年第1期176-185,共10页Chinese Journal of Applied and Environmental Biology

基　　金：国家自然科学基金项目(32171756,42107323);四川省科技计划项目(2022YFS0499,2023NSFSC1222)资助。

摘　　要：磷是植物生长发育所需的重要营养元素.次生演替是陆地退化生态系统恢复的重要途径,但土壤磷缺乏会对次生演替过程中的植物生长造成限制,因此深入理解次生演替对土壤磷组分的影响,对解决生态系统恢复过程中养分管理具有重要意义.在介绍土壤磷循环和磷组分的基本概念及生态学意义的基础上,对次生演替过程中不同土壤磷组分的变化规律、影响因素及其磷有效性进行全面梳理和分析.发现在次生演替过程中,高活性的树脂磷(Resin-P)没有特定的变化规律;较高活性的碳酸氢钠无机磷和有机磷(NaHCO3-Pi和NaHCO3-Po)随演替逐渐增加,主要与凋落物归还、有机质积累和微生物群落变化有关;中等活性的氢氧化钠无机磷和有机磷(NaOH-Pi和NaOH-Po)在演替过程中无明显变化趋势,可能受到土壤pH值和矿物离子(如铁和铝)的影响;中等活性的原生矿物磷(Primary mineral P)在大多数情况下会随着次生演替而降低.由于土壤有机质和微生物组成等与土壤磷组分显著相关,为提高次生演替过程中土壤磷有效性,应重点关注次生演替过程中土壤的理化特性(例如土壤pH值、含水量和有机质)以及微生物群落(例如溶磷菌群落)的变化;同时,也应该关注次生演替过程中土壤磷形态转化对磷有效性的影响;此外,还应加强对磷循环生物学机制的探究,为应对陆地生态系统植被恢复过程中生产力下降提供科学依据.Phosphorus(P)is an important nutrient required for plant growth and development.Secondary succession is an important method to restore degraded terrestrial ecosystems;however,soil P deficiency can limit plant growth during secondary succession.Therefore,a deeper understanding of the effects of secondary succession on soil P fractions is important for nutrient management in ecosystem restoration.Based on the basic concepts and ecological significance of soil P cycling and fractions,this study comprehensively summarizes and analyzes the changes,influencing factors,and phosphorus availability in different soil P fractions during secondary succession.The content of highly active resin P displayed no specific change pattern during secondary succession.The contents of moderately active sodium bicarbonate extractable inorganic P and organic P(NaHCO3-Pi and NaHCO3-Po)increased gradually with succession,mainly due to litter return,organic matter accumulation,and microbial community changes.NaOH-Pi and NaOH-Po contents showed no significant changes during succession,possibly due to the influence of soil pH and mineral ions(such as iron and aluminum).The content of moderately active primary mineral P generally decreased with secondary succession.As soil organic matter and microbial composition are significantly correlated with soil P fractions,the focus should be on the physicochemical properties of soil(such as soil pH,water content,and organic matter)and changes in microbial communities(such as phosphate-solubilizing bacterial communities)during secondary succession to improve soil P availability.Attention should also be given to the impact of soil P transformation on P availability during secondary succession.In addition,efforts should be made to strengthen the exploration of the biological mechanisms of P cycling to provide a scientific basis for addressing theproductivity decline in vegetation restoration during terrestrial ecosystem recovery.

关 键 词：土壤磷组分 有效磷 磷循环 无机磷 有机磷 生态恢复 

分 类 号：S714.2[农业科学—林学]