摘要
【目的】旨在从土壤微生物生物量及酶活性角度分析不同林型土壤质量状况。【方法】选取马尾松(Pinus massoniana)、木荷(Schima superba)和枫香(Liquidambar formosana)及马尾松-木荷和马尾松-枫香混交林等5种不同林型为研究对象,对不同林型土壤溶解性碳氮、微生物生物量碳氮和酶活性进行分析。【结果】不同林型对土壤pH、含水量的影响均达显著水平,木荷林地土壤全氮和全磷、DOC、DON和NO_(3)^(-)-N的含量显著高于马尾松纯林。马尾松-木荷混交林土壤MBC含量显著高于其他林型,MBN显著高于枫香纯林。马尾松纯林和马尾松-枫香混交林土壤蔗糖酶活性显著高于枫香纯林和马尾松-木荷混交林;马尾松-枫香混交林土壤酸性磷酸酶活性显著高于马尾松、枫香和木荷纯林;马尾松纯林土壤酸性蛋白酶活性显著高于其他林分。土壤全碳、全氮与土壤全磷、DOC、DON呈差异极显著正相关(P<0.01),与含水量呈差异显著性正相关,与酸性蛋白酶呈显著负相关;土壤全磷含量与DOC、DON和含水量呈显著正相关,与酸性蛋白酶呈显著负相关;DOC与DON呈显著正相关(P<0.001),与酸性蛋白酶呈显著负相关关系;DON和NO_(3)^(-)-N与含水量呈显著正相关关系(P<0.01),与酸性蛋白酶呈显著负相关关系;MBC与MBN呈显著正相关(P<0.01);酸性蛋白酶与蔗糖酶活性呈显著正相关。在所有生态因子中,微生物生物量碳氮对土壤蔗糖酶和脱氢酶的影响最大。【结论】木荷、枫香纯林以及马尾松-木荷、马尾松-枫香混交林对土壤理化性质的改良效果要优于马尾松纯林。
[Objective]This study aims to analyze the soil quality of different forest types from the perspective of soil microbial biomass and enzyme activity[.Method]Five different forest types,Pinus massoniana,Schima Superba,Liquidambar formosana and P.massoniana×L.formosana,P.massoniana×S.Superb were chosen as the research object.The soil microbial biomass carbon(MBC),nitrogen(MBN),dissolved organic C(DOC),N(DON),NH_(4)^(+)-N,NO_(3)^(-)-N,and enzyme activities were measured and the key influencing factors of different forest types were analyzed[.Result]The results showed that:the effects of different forest types on soil pH and water content were significant,the contents of total nitrogen(TN),total phosphorus(TP),DOC,DON and NO_(3)^(-)-N in soil of S.Superb were significantly higher than those in P.massoniana.The soil MBC content of Pm×Ss was significantly higher than that of other forest types,and the soil MBN of Pm×Ss was significantly higher than that of L.formosana.The soil sucrase activity of P.massoniana and Pm×Lf was significantly higher than that of L.formosana and Pm×Ss;The soil acid phosphatase(ACP)activity of Pm×Lf was significantly higher than that of P.massoniana,L.formosana and S.superb.The activity of soil acid protease(AcPr)in P.massoniana was significantly higher than that in other forests.Soil total carbon(TC)and TN were significantly positively correlated with soil TP,DOC and DON(P<0.01).TC and TN was positively correlated with water content,significantly and negatively correlated with acid proteaseAcpr;Soil TP content was positively correlated with DOC,DON and water content,and it was significantly and negatively correlated with AcPr;DOC was positively correlated with DON(P<0.001),and it was significantly and positively correlated with water content and negatively correlated with AcPr;There was a significant positive correlation between DON,NO_(3)^(-)-N and water content(P<0.01),were negatively correlated with AcPr;MBC and MBN were positively correlated(P<0.01);There was a significant positive
作者
王芳
文艺瑶
赵玉枭
崔鑫涛
段小华
鲁顺保
张艳杰
WANG Fang;WEN Yiyao;ZHAO Yuxiao;CUI Xintao;DUAN Xiaohua;LU Shunbao;ZHANG Yanjie(College of Life Science/Key Laboratory of Poyang Lake Wetland and Watershed Research,Ministry of Education,Jiangxi Normal University,Nanchang 330022,China;Jiangxi Province Key Laboratory of Soil Erosion and Prevention,Nanchang 330029,China)
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2024年第2期411-418,共8页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家自然科学基金项目(32260297)
江西省自然科学基金项目(20224ACB205003)。
关键词
退化红壤
林型
土壤微生物
酶活性
degraded red soil
forest type
soil microorganism
enzyme activity
