海螺沟冰川退缩区原生演替序列土壤主要矿质元素的迁移特征及影响因素  

Migration Characteristics and Influencing Factors of Main Mineral Elements in Soil of Primary Succession Sequence in Hailuogou Glacier Retreat Area

作　　者：杨丹荔 罗辑[2] YANG Danli;LUO Ji(Neijiang Normal University,Tuojiang River Basin High-quality Development Research Center,Neijiang Sichuan 641100,China;Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Key Laboratory of Mountain Surface Processes and Ecological Regulation,Chengdu 610041,China)

机构地区：[1]内江师范学院沱江流域高质量发展研究中心,四川内江641100 [2]中国科学院、水利部成都山地灾害与环境研究所山地表生过程与生态调控重点实验室,成都610041

出　　处：《地球与环境》2023年第1期27-35,共9页Earth and Environment

基　　金：第二次青藏高原综合科学考察项目(2019QZKK0307);国家自然科学基金项目(41771062)。

摘　　要：以海螺沟冰川退缩区土壤序列为载体,研究近120年土壤发育过程中主要矿质元素在土壤各层的迁移特征及影响因素。结果表明:(1)随土壤的发育,表层土壤中P、K、Ca、Mg、Cu、Fe、Mn、Na、Ni、Zn等10种矿质元素的含量均呈不同程度的下降,但在土壤C层中的分布较为均匀;(2)除K、Cu、Fe、Mn、Na、Ni在表层土壤中的含量低于全国平均值以外,其余土层的含量均高于全国平均值;(3)主成分分析显示,表层土壤中K、Ca、Mg、Fe、Cu、Na、Ni含量为主因子1,这主要与其来源为矿物风化有关,而P和Zn含量为主因子2,说明除受矿物风化的影响外,在较大程度上还受凋落物分解以及外源性输入的影响;(4)除P、Cu和Zn在表层土壤表现出明显的富集以外,K、Na、Ca、Mg、Mn、Ni、Fe随土壤发育均未表现出富集特征;(5)土壤pH是影响矿质元素在土壤中迁移的重要化学因素。Based on the soil sequence in the Hailuogou Glacier retreat area, the migration characteristics and influencing factors of major mineral elements were studied in different soil layers during soil development in the past 120 years. The results showed that:(1) With the development of soil, the contents of P, K, Ca, Mg, Cu, Fe, Mn, Na, Ni, Zn in the surface soil showed a decreasing trend, but the distribution in the soil C layer was more uniform;(2) Except that the contents of K, Cu, Fe, Mn, Na and Ni in surface soil were lower than the national average, the contents of other soil layers were higher than the national average;(3) Principal component analysis showed that the contents of K, Ca, Mg, Fe, Cu, Na and Ni in the surface soil were the main factor 1, which was primarily related to the mineral weathering, and the contents of P and Zn were the main factor 2, indicating that in addition to mineral weathering, they were also greatly affected by litter decomposition and exogenous input;(4) Except that P, Cu and Zn showed obvious enrichment in the surface soil, K, Na, Ca, Mg, Mn, Ni and Fe did not show enrichment characteristics with soil development;(5) The pH of soilwas an important chemical factor affecting the migration of mineral elements in the soil.

关 键 词：矿质元素 土壤发育 迁移特征 冰川退缩区 

分 类 号：S153[农业科学—土壤学] P595[农业科学—农业基础科学]