人工林土壤团聚体稳定性及影响因素  

Soil Aggregates Stability in Plantations and Its Influencing Factors

作　　者：柯琴 赵隽宇 覃祚玉[1] 石媛媛[1] 宋贤冲[1] 唐健[1] Ke Qin;Zhao Junyu;Qin Zuoyu;Shi Yuanyuan;Song Xianchong;Tang Jian(Guangxi Forestry Research Institute/Guangxi Research and Development Center for New Fertilizer,Nanning 530002,China)

机构地区：[1]广西壮族自治区林业科学研究院/广西林用新型肥料研发中心,南宁530002

出　　处：《世界林业研究》2024年第6期33-39,共7页World Forestry Research

基　　金：中央引导地方科技发展资金项目“森林土壤有机碳GF-5高光谱预测环境协同驱动机制研究项目”(桂科ZY22096012);广西自然科学基金项目“桉树—灰木莲混交人工林根系对土壤有机碳影响机制研究”(2022GXNSFBA035630);广西林科院基本科研业务费项目“桉树林地不同母质发育土壤团聚体形成及稳定机制”(林科202308号);广西优良用材林资源培育重点实验室课题资助项目“红壤区桉树林地土壤团聚体铁氧化物形态特征及团聚体稳定性研究”(2023-A-02-02)。

摘　　要：土壤团聚体稳定性对于增强林地土壤抗侵蚀能力、维持林地土壤肥力、优化森林固碳能力至关重要。土壤团聚体形成和周转是复杂的物理、化学和生物过程,受到多种因素交互影响。由于人工林经营管理的相对粗放性、植物根系的丰富多样性以及土壤有机质来源的广泛性,这类土壤系统中团聚体稳定性及其控制因素尚缺乏系统梳理与总结。文中通过收集整理相关文献,归纳了当前主流的土壤团聚体形成及周转模型假说,剖析土壤有机质、铁铝氧化物和理化性质等土壤内在因素以及采伐剩余物管理、混交经营和施肥等外部营林措施对人工林土壤团聚体形成与稳定性的具体影响,最后从4个方面对未来人工林土壤团聚体稳定性研究进行展望,旨在为实现林地土壤结构可持续提供科学依据。The stability of soil aggregates plays a pivotal role in bolstering the erosion resistance of forest soils,sustaining forest soil fertility,and optimizing carbon sequestration capacity of forests.The processes of soil aggregate formation and turnover,governed by a myriad of interactive physical,chemical,and biological factors,constitute a complex phenomenon.In light of the relatively extensive management practices employed for planted forests,the abundant diversity of plant root systems,and the diverse sources of soil organic matters,there remains a notable gap in the systematic examination and synthesis of soil aggregate stability and its underlying determinants.Through a review of pertinent literature,this paper concludes the prevailing hypotheses regarding soil aggregate formation and turnover and delves into the influences of the intrinsic soil attributes such as organic matter content,iron/aluminum oxides and physicochemical properties and the external forest management strategies including the management of logging residues,the establishment and management of mixed-species forest,and the fertilizer application on the formation and stability of soil aggregates in planted forests.At last,the paper makes a forward-looking prospect on future research on soil aggregate stability in planted forests from four perspectives to provide a robust scientific foundation for achieving soil structure sustainability in forest ecosystem.

关 键 词：人工林 土壤结构 有机质 铁氧化物 营林措施 

分 类 号：S714.2[农业科学—林学] S727.1