红壤茶树根层土壤基础呼吸作用和酶活性

应用生态学报 ›› 2003, Vol. ›› Issue (2): 179-183.

红壤茶树根层土壤基础呼吸作用和酶活性

俞慎¹, 何振立¹, 张荣光², 陈国潮¹, 黄昌勇¹, 朱炳良³

1. 浙江大学环境与资源学院资源科学系, 杭州 310029;
2. 浙江省军区司令部茶场, 杭州 310008;
3. 浙江省龙游县农业局, 龙游 324400

收稿日期:2001-02-13 修回日期:2001-10-26 出版日期:2003-02-15
通讯作者: 俞慎,男,1970年生,博士,主要从事土壤生物与生物化学研究,发表论文20余篇.E-mail:shyu@mail.cfas.afl.edu.
基金资助:
国家杰出青年科学基金资助项目(40025104)

Soil basal respiration and enzyme activities in the root-layer soil of tea bushes in a red soil

YU Shen¹, HE Zhenli¹, ZHANG Rongguang², CHEN Guochao¹, HUANG Changyong¹, ZHU Bingliang³

1. School of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, China;
2. Tea Farm of the Zhejiang Military Headquart, Hangzhou 310008, China

Received:2001-02-13 Revised:2001-10-26 Online:2003-02-15

摘要/Abstract

摘要： 对不同树龄茶树根层土壤的呼吸作用(包括代谢熵qCO₂)和土壤酶(脲酶、转化酶和酸性磷酸单酯酶)活性进行了研究.不同树龄茶树根层土壤日基础呼吸作用强度(36.23～58.52mg·kg^-1·d^-1)和日代谢熵(0.30～0.68)都以40和90年茶树较为接近,分别显著大于和小于10年树龄茶树根层土壤;脲酶活性(41.48～47.72mg·kg^-1·h^-1)则三者间差异不大,虽然随树龄增长而下降;转化酶活性(189.29～363.40mg·kg^-1·h^-1)也随树龄增长而下降,并且10年茶树根层土壤显著大于40和90年树龄茶树;而酸性磷酸单酯酶活性(444.22～828.32mg·kg^-1·h^-1)相反,随树龄增长而增强.结果表明,土壤基础呼吸作用、代谢熵和3种土壤酶活性都与茶树树龄、土壤pH、土壤有机碳、土壤全氮、土壤可溶性酚总量、及土壤微生物生物量密切相关.

Abstract: Soil basal respiration potential, metabolic quotient (qCO₂), and activities of urease, invertase and acid phosphomonoesterase were investigated in the root layer of 10, 40, and 90 yr old tea bushes grown on the same type of red soil. The soil daily basal respiration potential ranged from 36.23 to 58.52 mg·kg^-1 ·d^-1, and the potentials in the root layer of 40 or 90 yr old were greater than that of 10 yr old tea bushes.The daily qCO₂, ranging from 0.30 to 0.68, was in the reverse trend. The activities of test three enzymes changed differently with tea bushes' age. Urease activity in the root layer of all age tea bushes ranged from 41.48 to 47.72 mg·kg^-1 ·h^-1 and slightly decreased with tea bushes' age. Invertase activity was 189.29～363.40 mg·kg^-1 ·h^-1 and decreased with tea bushes' age, but its activity in the root layer of 10 year old tea bushes was significantly greater than that in the root layer soil of 40 or 90 year old tea bushes. Acid phosphomonoesterase activity (444.22～828.32 mg·kg^-1 ·h^-1) increased significantly with tea bushes' age. Soil basal respiration potential, qCO₂ and activities of 3 soil enzymes were closely related to soil pH, soil organic carbon, total nitrogen and C/Nratio, total soluble phenol, and microbial biomass carbon, respectively.

中图分类号:

S154.36

俞慎, 何振立, 张荣光, 陈国潮, 黄昌勇, 朱炳良. 红壤茶树根层土壤基础呼吸作用和酶活性[J]. 应用生态学报, 2003, (2): 179-183.

YU Shen, HE Zhenli, ZHANG Rongguang, CHEN Guochao, HUANG Changyong, ZHU Bingliang. Soil basal respiration and enzyme activities in the root-layer soil of tea bushes in a red soil[J]. Chinese Journal of Applied Ecology, 2003, (2): 179-183.

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