文献类型：期刊文献

中文题名：神农架4种典型人工林对土壤团聚体分布及稳定性的影响

英文题名：Effects of four typical plantations on the distribution and stability of soil aggregates in Shennongjia

作者：胡琛[1,2] 贺云龙[1,2] 崔鸿侠[3] 黄金莲[1,2] 唐万鹏[3] 马国飞[4] 雷静品[1,2] 荣道军[5]

第一作者：胡琛

机构：[1]中国林业科学研究院林业研究所国家林业和草原局林木培育重点实验室,北京100091;[2]南京林业大学南方现代林业协同创新中心,江苏南京210037;[3]湖北省林业科学研究院,湖北武汉430075;[4]神农架国家公园管理局,湖北神农架442421;[5]广东省樟木头林场,广东东莞523616

年份：2020

卷号：40

期号：12

起止页码：125-133

中文期刊名：中南林业科技大学学报

外文期刊名：Journal of Central South University of Forestry & Technology

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：中央级公益性科研院所基本科研业务费专项资金(CAFYBB2019SY002);科技协同创新与攻关课题(2019SNJ001);国家林业局生态站监测运行补助项目(2019132066)。

语种：中文

中文关键词：神农架;人工针叶林;团聚体稳定性;土壤肥力

外文关键词：Shennongjia;artificial coniferous forest;aggregate stability;soil fertility

分类号：S714

摘要：【目的】土壤团聚体是指示土壤结构和土壤肥力的重要指标。探究神农架典型人工林土壤团聚体的分布特征和稳定性以及稳定性指标与土壤理化性质的关系。【方法】以神农架4种典型针叶人工林(落叶松林、华山松林、水杉林和柳杉林)土壤0~10 cm层为研究对象,采用沙维诺夫法分析土壤团聚体特征,并进一步分析了土壤理化性质及其与团聚体稳性指标和土壤大团聚体含量的关系。【结果】落叶松林土壤风干大团聚体含量显著低于其他3种林分,4种林分土壤水稳性大团聚体含量从低到高顺序为水杉林、落叶松林、华山松林、柳杉林。落叶松林和柳杉林风干团聚体MWD(平均质量直径)显著低于水杉林和华山松林,落叶松林和水杉林水稳性团聚体MWD显著低于华山松林和柳杉林,4种林分风干团聚体MWD与水稳性团聚体MWD差值大小顺序为落叶松林<柳杉林<华山松林<水杉林。华山松林和柳杉林的土壤有机碳、全氮、全磷和镁含量显著高于落叶松林和水杉林。土壤团聚体水稳性与土壤有机碳、全氮和全磷含量呈极显著的正相关关系。土壤容重、孔隙度、pH值、钾含量和钠含量主要与土壤风干团聚体的分布关系显著。【结论】研究结果说明土壤团聚体特征可以指示不同林分土壤肥力和土壤结构特征,不同林分土壤团聚体的分布可以为本区域的人工针叶林可持续经营管理与评价提供参考。
【Objective】Soil aggregate is an important indicator of soil structure and soil fertility.This paper aimed to explore the distribution characteristics and stability of soil aggregates and relationships between stability indexes and soil physical and chemical characters of typical plantations in Shennongjia.【Method】Four types of typical coniferous plantations’(Larix gmelinii forest,Pinus armandii forest,Metasequoia glyptostroboides forest and Cryptomeria fortunei forest)soil in 0-10 cm layer were taken as the research objects of Shennongjia.The characteristics of soil aggregates was determined byСаввинов.The correlation between the physical and chemical characters of soil and stability index of aggregates,the physical and chemical characters of soil and content of soil macroaggregates were further analyzed.【Result】The content of air-dried macroaggregates in the L.gmelinii forest was significantly lower than in the other 3 forest stands.The content of soil water-stable macroaggregates(particle size>0.25mm)under the four forests followed the order from smallest to largest was M.glyptostroboides forest,L.gmelinii forest,P.armandii forest,C.fortunei forest.The MWD(mean weight diameter)of air-dried aggregates of L.gmelinii and C.fortunei forests were significantly lower than those of P.armandii and M.glyptostroboides forests.The MWD of water-stable aggregates of L.gmelinii and M.glyptostroboides forests were significantly lower than those of P.armandii and C.fortunei forests.The discrepancy between the MWD of air-dried aggregates and water-stable aggregates of the four forest stands followed the order L.gmelinii forest