Comparison of measured and simulated changes in base cation amounts using a one-layer and a multi-layer soil acidification model

1994 ◽  
Vol 72 (1-4) ◽  
pp. 41-65 ◽  
Author(s):  
Harmke Van Oene ◽  
Wim De Vries
Keyword(s):  
Soil Acidification ◽  
Base Cation ◽  
Acidification Model

Whole soil acidification and base cation reduction across subtropical China

Geoderma ◽  
2020 ◽  
Vol 361 ◽  
pp. 114107 ◽  
Author(s):  
Zaipeng Yu ◽  
Han Y.H. Chen ◽  
Eric B. Searle ◽  
Jordi Sardans ◽  
Philippe Ciais ◽  
...  
Keyword(s):  
Soil Acidification ◽  
Base Cation ◽  
Subtropical China

scholarly journals Status of soil acidification in North America

2006 ◽  
Vol 52 (Special Issue) ◽  
pp. S3-S13 ◽  
Author(s):  
M.E. Fenn ◽  
T.G. Huntington ◽  
S.B. McLaughlin ◽  
C. Eagar ◽  
A. Gomez ◽  
...  
Keyword(s):  
North America ◽  
Forest Soils ◽  
Soil Acidification ◽  
Sugar Maple ◽  
Base Cations ◽  
Basal Area ◽  
Base Cation ◽  
Eastern United States ◽  
San Bernardino Mountains ◽  
Wide Range

Forest soil acidification and depletion of nutrient cations have been reported for several forested regions in North America, predominantly in the eastern United States, including the northeast and in the central Appalachians, but also in parts of southeastern Canada and the southern U.S. Continuing regional inputs of nitrogen and sulfur are of concern because of leaching of base cations, increased availability of soil Al, and the accumulation and ultimate transmission of acidity from forest soils to streams. Losses of calcium from forest soils and forested watersheds have now been documented as a sensitive early indicator and a functionally significant response to acid deposition for a wide range of forest soils in North America. For red spruce, a clear link has been established between acidic deposition, alterations in calcium and aluminum supplies and increased sensitivity to winter injury. Cation depletion appears to contribute to sugar maple decline on some soils, specifically the high mortality rates observed in northern Pennsylvania over the last decade. While responses to liming have not been systematically examined in North America, in a study in Pennsylvania, restoring basic cations through liming increased basal area growth of sugar maple and levels of calcium and magnesium in soil and foliage. In the San Bernardino Mountains in southern California near the west coast, the pH of the A horizon has declined by at least 2 pH units (to pH 4.0–4.3) over the past 30 years, with no detrimental effects on bole growth; presumably, because of the Mediterranean climate, base cation pools are still high and not limiting for plant growth.

Agricultural intensification and the impacts on soil fertility in the Middle Mountains of Nepal

2004 ◽  
Vol 84 (3) ◽  
pp. 323-332 ◽  
Author(s):  
Stefanie von Westarp ◽  
Hans Schreier, Sandra Brown ◽  
P. B. Shah
Keyword(s):  
Soil Fertility ◽  
Soil Acidification ◽  
Agricultural Intensification ◽  
Crop Yields ◽  
Soil Nutrient ◽  
Base Cation ◽  
Nutrient Pool ◽  
Soil P ◽  
Soil Nutrition ◽  
Middle Mountains

Agricultural intensification in the Nepalese Middle Mountains has caused concern that soil inputs are insufficient to meet the higher nutrient demands of increased crop rotations, that increased chemical fertilizer dependency will cause soil acidification, and that soil fertility will decline. To examine changes in soil fertility dynamics over time and between land-use groups soil samples, farm surveys, and nutrient budgets were determined for less intensive irrigated and rainfed sites in 1994 and for intensive irrigated and rainfed sites in 2000 in the Jhikhu Khola watershed. Changes in fertilizer policy and in cropping rotation (introduction of potatoes and tomatoes and a decline in the use of a pre-monsoon fallow) have contributed to unbalanced and inadequate soil nutrition. Farmers in 2000 used significantly more compost and fertilizer (particularly diammonium phosphate) than in 1994. In irrigated sites, a significant increase in available soil P, a significant decline in exchangeable soil K, and a decline in base cation content was observed in sites sampled in 2000 versus 1994. Farmers intensively cultivating irrigated land need to address exchangeable soil K deficits, while reducing excess P inputs and taking measures to reduce the potential for soil acidification. In contrast, intensive rainfed sites have large surpluses in N, P, and K budgets for sites sampled in 2000, with significant increases in soil K, base saturation, and available soil P between 1994 and 2000. Given current crop yields, soil inputs to rainfed sites could be reduced to minimize unnecessary economic expenditures and eutrophication problems without depleting the soil nutrient pool. Key words: Agricultural intensification, soil fertility, phosphorus, potassium

scholarly journals Impacts of earthworm species on soil acidification, Al fractions, and base cation release in a subtropical soil from China

2019 ◽  
Vol 27 (27) ◽  
pp. 33446-33457
Author(s):  
Jialong Wu ◽  
Chi Zhang ◽  
Ling Xiao ◽  
Mikael Motelica-Heino ◽  
Zongling Ren ◽  
...  
Keyword(s):  
Soil Acidification ◽  
Base Cation ◽  
Earthworm Species ◽  
Subtropical Soil

Long-term tobacco plantation induces soil acidification and soil base cation loss

2015 ◽  
Vol 23 (6) ◽  
pp. 5442-5450 ◽  
Author(s):  
Yuting Zhang ◽  
Xinhua He ◽  
Hong Liang ◽  
Jian Zhao ◽  
Yueqiang Zhang ◽  
...  
Keyword(s):  
Soil Acidification ◽  
Base Cation ◽  
Soil Base

The role of Athyrium distentifolium in reduction of soil acidification and base cation losses due to acid deposition in a deforested mountain area

2011 ◽  
Vol 354 (1-2) ◽  
pp. 107-120 ◽  
Author(s):  
Ivan Tůma ◽  
Karel Fiala ◽  
Jaroslav Záhora ◽  
Petr Holub
Keyword(s):  
Acid Deposition ◽  
Soil Acidification ◽  
Base Cation ◽  
Mountain Area

scholarly journals Effects of Moderate Nitrate and Low Sulphate Depositions on the Status of Soil Base Cation Pools and Recent Mineral Soil Acidification at Forest Conversion Sites with European Beech (“Green Eyes”) Embedded in Norway Spruce and Scots Pine Stands

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 573
Author(s):  
Florian Achilles ◽  
Alexander Tischer ◽  
Markus Bernhardt-Römermann ◽  
Ines Chmara ◽  
Mareike Achilles ◽  
...  
Keyword(s):  
Soil Acidification ◽  
Forest Floor ◽  
Mineral Soil ◽  
European Beech ◽  
Base Cation ◽  
Forest Conversion ◽  
Seepage Water ◽  
Litter Fall ◽  
Soil Base ◽  
Pine Stands

High N depositions of past decades brought changes to European forests including impacts on forest soil nutrition status. However, the ecosystem responses to declining atmospheric N inputs or moderate N depositions attracted only less attention so far. Our study investigated macronutrient (N, S, Ca2+, Mg2+, K+) pools and fluxes at forest conversion sites over 80 years old in Central Germany with European beech (so-called “Green Eyes” (GE)). The GE are embedded in large spruce and pine stands (coniferous stands: CS) and all investigated forest stands were exposed to moderate N deposition rates (6.8 ± 0.9 kg ha−1 yr−1) and acidic soil conditions (pHH2O < 4.7). Since the understanding of forest soil chemical and macronutrient status is essential for the evaluation of forest conversion approaches, we linked patterns in water-bound nutrient fluxes (2001–2018) and in predicted macronutrient storage in the herbaceous and tree layer to patterns in litter fall (2016–2017) and in forest floor and mineral soil macronutrient stocks at GE and CS assessed in 2018. Our results exhibited 43% (Nt) and 21% (S) higher annual throughfall fluxes at CS than at GE. Seepage water at 100 cm mineral soil depth (2001–2018) of CS is characterized by up to fivefold higher NO3− (GE: 2 ± 0.7 µmolc L−1; CS: 9 ± 1.4 µmolc L−1) and sevenfold higher SO42− (GE: 492 ± 220 µmolc L−1; CS: 3672 ± 2613 µmolc L−1) concentrations. High base cation (∑ Ca2+, Mg2+, K+) concentrations in CS mineral soil seepage water (100 cm depth: 2224 ± 1297 µmolc L−1) show significant positive correlations with SO42−. Tree uptake of base cations at GE is associated especially with a Ca2+ depletion from deeper mineral soil. Foliar litter fall turns out to be the main pathway for litter base cation return to the topsoil at GE (>59%) and CS (>66%). The litter fall base cation return at GE (59 ± 6 kg ha−1 yr−1) is almost twice as large as the base cation deposition (30 ± 5 kg ha−1 yr−1) via throughfall and stemflow. At CS, base cation inputs to the topsoil via litter fall and depositions are at the same magnitude (24 ± 4 kg ha−1 yr−1). Macronutrient turnover is higher at GE and decomposition processes are hampered at CS maybe through higher N inputs. Due to its little biomass and only small coverage, the herbaceous layer at GE and CS do not exert a strong influence on macronutrient storage. Changes in soil base cation pools are tree species-, depth- and might be time-dependent, with recently growing forest floor stocks. An ongoing mineral soil acidification seems to be related to decreasing mineral soil base cation stocks (through NO3− and especially SO42− leaching as well as through tree uptake).

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