毛竹—阔叶树混交林土壤异质性时空变化特征研究进展  

Research Progress on Temporal and Spatial Characteristics of Soil Heterogeneity in Phyllostachys edulis-Broadleaf Mixed Forests

作　　者：黄凯雯 张瑜飞 高洪娣 陆启帆 宁祎琳 吕明亮 毕毓芳 王安可 HUANG Kai-wen;ZHANG Yu-fei;GAO Hong-di;LU Qi-fan;NING Yi-lin;LV Ming-liang;BI Yu-fang;WANG An-ke(China National Bamboo Research Center,Hangzhou 310012,Zhejiang,China;Key Laboratory of State Forestry and Grassland Administration on Bamboo Forest Ecology and Resource Utilization,Hangzhou 310012,Zhejiang,China;Zhejiang Forest Resources Monitoring Center,Hangzhou 310020,Zhejiang,China;Forestry Bureau of Kecheng District,Quzhou 324000,Zhejiang,China)

机构地区：[1]国家林业和草原局竹子研究开发中心,浙江杭州310012 [2]竹林生态与资源利用国家林业和草原局重点实验室,浙江杭州310012 [3]浙江省森林资源监测中心,浙江杭州310020 [4]衢州市柯城区林业局,浙江衢州324000

出　　处：《竹子学报》2024年第4期18-29,共12页Journal of Bamboo Research

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2021MA011);浙江省省院合作林业科技项目(2019SY01);浙江省重点研发计划项目(2020C02008)。

摘　　要：【目的】毛竹—阔叶树混交林(下称竹阔混交林)是由毛竹(Phyllostachys edulis)和阔叶树种所组成的较为复杂的森林,研究其土壤异质性的时空变化特征对于竹阔混交林生态系统稳定性维护和多功能效益发挥具有重要意义。【方法】通过搜集和整理文献,归纳总结了竹阔混交林土壤在物理性质、化学性质和生物学特性方面相较于毛竹纯林和阔叶树纯林的空间异质性,以及在日变化和年变化方面的时间异质性,并分析了竹阔混交林毛竹根系性状对土壤的响应。【结果】(1)竹阔混交林土壤密度较大而土壤孔隙度较小,土壤含水量和稳定性介于其他2种林分之间,土壤质地表现为壤土,土壤渗透性能好于毛竹纯林;(2)竹阔混交可以提高毛竹纯林土壤有机质、碳氮磷含量及其比例、其他化学元素含量和土壤培肥能力,而土壤pH值的变化不同研究给出了不同的结论;(3)竹阔混交可以提高阔叶树纯林土壤微生物生物量、感染强度、多样性和固碳潜力,竹阔混交林土壤酶活性或高或低于毛竹纯林,土壤微生物受磷限制的程度较毛竹纯林更轻;(4)竹阔混交会降低毛竹林的土壤日温度,不同季节竹阔混交林土壤呼吸速率、含水量、有机物和无机物含量相较于其他2种林分存在差异,毛竹林正向演替可以提高土壤渗透性和土壤微生物碳氮磷含量;(5)毛竹根系有上浮的趋势,且毛竹在竹阔混交林中可能拥有更强的吸收能力。【结论】现有研究对于竹阔混交林土壤异质性时空变化特征做了比较系统地阐述,对其机理进行了假设和验证。后续可以在林龄结构、复层模式、林分密度、林分海拔和毛竹根系等方面针对竹阔混交林植物与土壤的互作进行深入研究,建立更加科学的竹阔混交林评价体系,指导衰退的毛竹低产林快速合理地向竹阔混交林转化。【Objective】Phyllostachys edulis-broadleaf mixed forests(hereafter referred to as bamboo and broadleaf mixed forests)are complex forests composed of Ph.edulis and broadleaf trees,and the study of the spatial and temporal characteristics of soil heterogeneity is important for maintaining the stability of bamboo and broadleaf ecosystem and multi-functional benefits of bamboo and broadleaf mixed forests.【Method】By collecting and organizing the literature,this paper summarizes the spatial heterogeneity of the soil in terms of physical,chemical and biological properties,and temporal heterogeneity in terms of daily and annual changes in the soil of bamboo and broadleaf mixed forests compared with pure bamboo forests and pure broadleaf forests,and analyzes the response of Ph.edulis root system to the soil in bamboo and broadleaf mixed forests.【Result】(1)The soil density of bamboo and broadleaf mixed forests is larger while the soil porosity is smaller,and the soil water content and stability are between the other two forest stands.The soil texture is loamy,and the soil infiltration performance is better than that of pure bamboo forests.(2)Bamboo and broadleaf mixed forests can improve the organic matter,content of carbon,nitrogen and phosphorusand their ratios,other chemical elements content and soil fertilization capacity of pure bamboo forests,and the change of soil pH value in different studies gives different conclusions.(3)Bamboo and broadleaf mixing can improve soil microbial biomass,infection intensity,diversity and carbon sequestration potential in pure broadleaf forests.Soil enzyme activity in bamboo and broadleaf mixed forests is either higher or lower than that in pure bamboo forests,and soil microorganisms are less restricted by phosphorus than in pure bamboo forests.(4)Bamboo and broadleaf mixing reduces the daily temperature of the soil in bamboo forests.The soil respiration rate,water content,organic matter and inorganic matter contents of bamboo and broadleaf mixed forests in different seasons

关 键 词：竹阔混交林 土壤异质性 毛竹 根系 

分 类 号：S71[农业科学—林学]