元阳梯田不同植被类型土壤养分及酶活性特征
S158.3; [目的]探讨测定元阳梯田不同植被类型的土壤养分含量和土壤酶活性特征.[方法]在元阳梯田核心区域选取6种植被类型(鼠麹草、撑绿竹、野牡丹、杉木、旱冬瓜和樟木),按0~20 cm和20~40 cm 土层进行取样,测定各土层土壤的理化性质(pH、有机碳、总氮、碱解氮、总磷、速效磷、全钾和速效钾)和土壤酶活性(蔗糖酶、脲酶、蛋白酶和过氧化氢酶),分析土壤养分和土壤酶活性间的相关性.[结果]不同植被类型土壤养分和土壤酶活性均随土层深度的增加呈现出降低的趋势,土壤养分表聚现象明显;土壤酶活性间呈现出极显著相关关系,土壤养分间呈现出显著相关和极显著相关关系;土壤碱解氮与蛋白酶、过氧化氢酶和蔗...
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Published in | 广东农业科学 Vol. 49; no. 3; pp. 86 - 95 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | Chinese |
Published |
云南农业大学资源与环境学院,云南昆明650102
2022
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Subjects | |
Online Access | Get full text |
ISSN | 1004-874X |
DOI | 10.16768/j.issn.1004-874X.2022.03.010 |
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Abstract | S158.3; [目的]探讨测定元阳梯田不同植被类型的土壤养分含量和土壤酶活性特征.[方法]在元阳梯田核心区域选取6种植被类型(鼠麹草、撑绿竹、野牡丹、杉木、旱冬瓜和樟木),按0~20 cm和20~40 cm 土层进行取样,测定各土层土壤的理化性质(pH、有机碳、总氮、碱解氮、总磷、速效磷、全钾和速效钾)和土壤酶活性(蔗糖酶、脲酶、蛋白酶和过氧化氢酶),分析土壤养分和土壤酶活性间的相关性.[结果]不同植被类型土壤养分和土壤酶活性均随土层深度的增加呈现出降低的趋势,土壤养分表聚现象明显;土壤酶活性间呈现出极显著相关关系,土壤养分间呈现出显著相关和极显著相关关系;土壤碱解氮与蛋白酶、过氧化氢酶和蔗糖酶间呈极显著相关关系,与脲酶呈显著相关关系;在各植被类型0~40 cm 土壤中,土壤蔗糖酶和脲酶均在杉木土壤中最高,分别为58.42、58.21 mg/g·24h,蛋白酶在旱冬瓜土壤中最高,为247.79 mg/g·h,过氧化氢酶在撑绿竹土壤中最高,为3.76 mg/g·24h.土壤有机碳含量在野牡丹土壤中最高,为24.35 g/kg,总氮和碱解氮在杉木和旱冬瓜土壤中最高,分别为2.24 g/kg和112.46 mg/kg,总磷和有效磷在旱冬瓜和鼠麹草土壤中最高,分别为0.82 g/kg和75.10 mg/kg.[结论]不同植被类型影响着土壤养分含量和土壤酶活性,且土壤养分含量和土壤酶活性呈现垂直分布特征. |
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AbstractList | S158.3; [目的]探讨测定元阳梯田不同植被类型的土壤养分含量和土壤酶活性特征.[方法]在元阳梯田核心区域选取6种植被类型(鼠麹草、撑绿竹、野牡丹、杉木、旱冬瓜和樟木),按0~20 cm和20~40 cm 土层进行取样,测定各土层土壤的理化性质(pH、有机碳、总氮、碱解氮、总磷、速效磷、全钾和速效钾)和土壤酶活性(蔗糖酶、脲酶、蛋白酶和过氧化氢酶),分析土壤养分和土壤酶活性间的相关性.[结果]不同植被类型土壤养分和土壤酶活性均随土层深度的增加呈现出降低的趋势,土壤养分表聚现象明显;土壤酶活性间呈现出极显著相关关系,土壤养分间呈现出显著相关和极显著相关关系;土壤碱解氮与蛋白酶、过氧化氢酶和蔗糖酶间呈极显著相关关系,与脲酶呈显著相关关系;在各植被类型0~40 cm 土壤中,土壤蔗糖酶和脲酶均在杉木土壤中最高,分别为58.42、58.21 mg/g·24h,蛋白酶在旱冬瓜土壤中最高,为247.79 mg/g·h,过氧化氢酶在撑绿竹土壤中最高,为3.76 mg/g·24h.土壤有机碳含量在野牡丹土壤中最高,为24.35 g/kg,总氮和碱解氮在杉木和旱冬瓜土壤中最高,分别为2.24 g/kg和112.46 mg/kg,总磷和有效磷在旱冬瓜和鼠麹草土壤中最高,分别为0.82 g/kg和75.10 mg/kg.[结论]不同植被类型影响着土壤养分含量和土壤酶活性,且土壤养分含量和土壤酶活性呈现垂直分布特征. |
Author | 邸雪嫣 解国玲 石浩 苏友波 吴流通 张智浩 |
AuthorAffiliation | 云南农业大学资源与环境学院,云南昆明650102 |
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