Biogeochemistry and weathering in a forest catchment and an arable field in central Sweden

IF 1.7 4区 农林科学 Q2 AGRONOMY Acta Agriculturae Scandinavica Section B-Soil and Plant Science Pub Date : 1998-12-01 DOI:10.1080/09064719809362500
B. Ulén, S. Snäll
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引用次数: 10

Abstract

Fluxes of base cations, nitrogen and phosphorus were investigated in a long‐term study at a forest site and a nearby arable site in central Sweden. At both sites soil mineralogy was reflected in the stream water concentrations, especially during base‐flow. Weathering rates for the major base cations and natrium (SBC + Na) in the forest soil calculated from empirical relationships and quartz distribution in the soil profile were 0.4 and 0.3 kmolc ha−1 year−1, respectively. Simulations using the PROFILE model of forest soil predicted a weathering rate of 0.6 kmolc ha−1 year−1 Net vegetation uptake of base cations was calculated to be larger, at 0.8 kmolc ha−1 year−1 In the soil of the arable site biogeochemical fluxes resulting from weathering and biomass removal were one order of magnitude faster. Budget calculations for the arable land indicated that a weathering rate of 7 kmolcha −1 year −1 was needed to keep the system in balance. Weathering of Mg was estimated to be equal to the amount applied as ferti...
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瑞典中部森林集水区和耕地的生物地球化学和风化
在瑞典中部的森林场地和附近的耕地场地进行了一项长期研究,调查了碱阳离子、氮和磷的通量。在这两个地点,土壤矿物学反映在水流浓度中,特别是在基流期间。根据经验关系和土壤剖面石英分布计算的森林土壤中主要碱阳离子和钠(SBC + Na)的风化速率分别为0.4和0.3 kmolc ha−1年−1。利用PROFILE模型对森林土壤进行模拟,预测风化速率为0.6 kmol / h−1年−1,计算出碱离子的净植被吸收率较大,为0.8 kmol / h−1年−1。在耕地场地的土壤中,由风化和生物质去除引起的生物地球化学通量要快一个数量级。对耕地的预算计算表明,需要7 kmolcha−1年−1的风化速率来保持系统的平衡。Mg的风化作用估计等于作为肥料施用的量。
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来源期刊
CiteScore
4.40
自引率
0.00%
发文量
56
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 .
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