芬兰农业生态系统中三种土壤类型的土壤呼吸

IF 1.7 4区农林科学 Q2 AGRONOMY

Acta Agriculturae Scandinavica Section B-Soil and Plant Science Pub Date : 1999-06-01 DOI:10.1080/09064719950135560

H. Koizumi, M. Kontturi, S. Mariko, T. Nakadai, Y. Bekku, T. Mela

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引用次数: 50

摘要

对芬兰农业生态系统3种不同土壤类型(泥炭土、沙土和粘土)土壤呼吸(SR)、土壤温度(ST)和土壤含水量(SWC)的季节变化进行了监测。从5月到10月，每隔2-3周使用红外气体分析仪(IRGA)采用封闭室法测量CO2排放率。不同土壤类型SR的季节变化不同:泥炭土，夏季最大速率(650 mg CO2 m-2 h-1)， SR与ST呈显著正相关，SR与SWC呈负相关;沙质土壤，稳定的SR (300 mg CO2 m-2 h-1)，无季节变化，SR与SWC呈正相关，SR与ST无显著相关;粘土土壤，夏季最大速率为500 mg CO2 m-2 h-1, SR与ST呈极显著正相关，SR与SWC呈负相关。基于土壤有机质含量与土壤有机质含量之间的关系，建立了预测耕地土壤CO2演化量的统计模型。

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Soil respiration in three soil types in agricultural ecosystems in Finland

Seasonal changes in soil respiration (SR), soil temperature (ST) and soil water content (SWC) were monitored in three different soil types (peat, sand and clay soils) in Finnish agricultural ecosystems. Rates of CO2 emission were measured by the closed chamber method using an infrared gas analyser (IRGA) at intervals of 2-3 weeks from May to October. The seasonal changes in SR were different among the soil types: peat soil, maximum rate (650 mg CO2 m-2 h-1) in summer, positive significant relation between SR and ST and negative relation between SR and SWC; sandy soil, stable SR (300 mg CO2 m-2 h-1) without seasonal changes, positive relation between SR and SWC and no significant relation between SR and ST; clay soil, maximum rate (500 mg CO2 m-2 h-1) in summer, highly positive significant relation between SR and ST and negative relation between SR and SWC. A statistical model was developed to predict the amount of CO2 evolved from the cultivated soils based on the relationships between SR and certain abio...

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来源期刊

Acta Agriculturae Scandinavica Section B-Soil and Plant Science 农林科学-农艺学

CiteScore

4.40

自引率

0.00%

发文量

审稿时长

2.3 months

期刊介绍： Acta Agriculturæ Scandinavica Section B publishes original research in applied soil and plant science with special attention given to to crop production in agri- and horticultural systems. We welcome manuscripts dealing with: Climate smart and sustainable crop production systems Water and nutrient efficiency Soil conservation and productivity Precise agriculture systems Applications of bio- and nanotechnology Digitalisation and robotics Soil-plant interactions Acta Agriculturæ Scandinavica, Section B – Soil & Plant Science forms part of a series of titles published on behalf of the Nordic Association of Agricultural Science (NJF). The series also includes Section A - Animal Science .