Modeling response of soil productivity to biogeochemical cycling and atmospheric acid deposition in the Hayden Brook watershed (Canada) using the ForNBM model

2007 ◽  
Vol 205 (3-4) ◽  
pp. 410-422 ◽  
Author(s):  
Zhanxue Zhu ◽  
Paul A. Arp ◽  
Fanrui Meng ◽  
Charles P.-A. Bourque ◽  
Asit Mazumder
Keyword(s):  
Acid Deposition ◽  
Biogeochemical Cycling ◽  
Soil Productivity ◽  
Atmospheric Acid Deposition

scholarly journals Anthropogenic Effects on Forest Ecosystems at Various Spatio-Temporal Scales

2002 ◽  
Vol 2 ◽  
pp. 827-841 ◽  
Author(s):  
Michael Bredemeier
Keyword(s):  
Air Pollution ◽  
Long Range ◽  
Acid Deposition ◽  
Soil Degradation ◽  
Forest Ecosystems ◽  
Global Scale ◽  
Soil Productivity ◽  
Long Term Effects ◽  
The World

The focus in this review of long-term effects on forest ecosystems is on human impact. As a classification of this differentiated and complex matter, three domains of long-term effects with different scales in space and time are distinguished: 1- Exploitation and conversion history of forests in areas of extended human settlement 2- Long-range air pollution and acid deposition in industrialized regions 3- Current global loss of forests and soil degradation.There is an evident link between the first and the third point in the list. Cultivation of primary forestland — with its tremendous effects on land cover — took place in Europe many centuries ago and continued for centuries. Deforestation today is a phenomenon predominantly observed in the developing countries, yet it threatens biotic and soil resources on a global scale. Acidification of forest soils caused by long-range air pollution from anthropogenic emission sources is a regional to continental problem in industrialized parts of the world. As a result of emission reduction legislation, atmospheric acid deposition is currently on the retreat in the richer industrialized regions (e.g., Europe, U.S., Japan); however, because many other regions of the world are at present rapidly developing their polluting industries (e.g., China and India), “acid rain” will most probably remain a serious ecological problem on regional scales. It is believed to have caused considerable destabilization of forest ecosystems, adding to the strong structural and biogeochemical impacts resulting from exploitation history.Deforestation and soil degradation cause the most pressing ecological problems for the time being, at least on the global scale. In many of those regions where loss of forests and soils is now high, it may be extremely difficult or impossible to restore forest ecosystems and soil productivity. Moreover, the driving forces, which are predominantly of a demographic and socioeconomic nature, do not yet seem to be lessening in strength. It can only be hoped that a wise policy of international cooperation and shared aims can cope with this problem in the future.

Soil acidification in china’s forests due to atmospheric acid deposition from 1980 to 2050

2022 ◽  
Author(s):  
Qiongyu Zhang ◽  
Jianxing Zhu ◽  
Qiufeng Wang ◽  
Li Xu ◽  
Mingxu Li ◽  
...  
Keyword(s):  
Acid Deposition ◽  
Soil Acidification ◽  
Atmospheric Acid Deposition

Development of atmospheric acid deposition in China from the 1990s to the 2010s

2017 ◽  
Vol 231 ◽  
pp. 182-190 ◽  
Author(s):  
Haili Yu ◽  
Nianpeng He ◽  
Qiufeng Wang ◽  
Jianxing Zhu ◽  
Yang Gao ◽  
...  
Keyword(s):  
Acid Deposition ◽  
Atmospheric Acid Deposition

Helicopter Liming to Help Restore Acidified Forest Soil Productivity 

2021 ◽  
Author(s):  
Caitlin McCavour ◽  
Shannon Sterling ◽  
Kevin Keys ◽  
Edmund Halfyard
Keyword(s):  
Acid Deposition ◽  
Forest Floor ◽  
Sugar Maple ◽  
Mineral Soil ◽  
Red Spruce ◽  
Molar Ratio ◽  
Ground Vegetation ◽  
Soil Productivity ◽  
Early Results ◽  
Chemical Response

<p>Decades of acid deposition across northeastern North America has caused excess leaching of soil base cations (Ca<sup>2+</sup>, Mg<sup>2+</sup>, K<sup>+</sup>) and increases in bioavailable aluminum (Al<sup>3+</sup>) that, in combination, have resulted in widespread decreases in potential forest productivity. Despite major reductions in SO<sub>2</sub> and NO<sub>x</sub> emissions since the 1990s, forest soils across the region have shown few signs of recovery from acid deposition impacts and it could take decades or centuries for natural recovery to occur. As a result, affected forests are stressed, less productive, and more prone to climate change-induced damage. Helicopter liming of upland forests may be an effective way to jump-start the soil recovery process. Here we report on early results (one-year) from a helicopter liming trial in Nova Scotia, Canada where 10 tonnes/ha of dolomitic limestone was applied to approximately 8 ha of mature red spruce (<em>Picea rubens</em>) and mature tolerant hardwood (<em>Acer spp</em>. and <em>Betula spp.</em>) forest. Data are presented on (i) the effectiveness of helicopter liming in forests; (ii) the initial chemical response of forest floor organic and mineral soil horizons; and (iii) the initial chemical response of red spruce foliage, maple foliage, and ground vegetation. Preliminary results showed that despite non-uniform lime distribution, there were significant increases (<em>P </em>< 0.05) in Ca<sup>2+</sup>, Mg<sup>2+</sup>, pH, and base saturation (BS), and significant decreases in total acidity in forest floor organic horizons in both the mature red spruce and tolerant hardwood stands; however, there were no significant changes in Al<sup>3+</sup>. The initial chemical response in sugar maple and red spruce foliage showed significant increases in the Ca/Al molar ratio .  The initial response in ground vegetation (Schreber’s moss; <em>Pleurozium schreberi </em>and wood fern; <em>Dryopteris intermedia</em>) showed significant increases in Ca<sup>2+</sup> and decreases in K<sup>+</sup> for both species; however, Schreber’s moss also showed significant increases in Mg<sup>2+</sup> and Al<sup>3+</sup> while wood fern did not. These early chemical results are promising and further support the use of helicopter liming as an effective tool to combat lingering effects from acid deposition in acidified forests.</p>

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