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Larssen, Thorjørn; Jiling, Xiong; Vogt, Rolf D.; Seip, H. M.; Liao, Bo-Han; Zhao, Dan

doi:10.1023/a:1004985209931

Cited by 37 publications

(3 citation statements)

References 25 publications

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“…The Al(OH) 3 content in calcareous soils was calculated as 5% of clay (Xiong and Li, 1987). The fraction of sand, silt and clay in the soil was 0.462, 0.323 and 0.215, respectively (Larssen et al, 1998). The fraction of the net primary productivity (NPP) allocation was referred from Feng et al (1999).…”

Section: Data Collectionmentioning

confidence: 99%

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Effects of aluminum toxicity induced by acid deposition on pine forest ecosystem in Longli of Guizhou Province, Southwestern China

et al. 2015

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The effects of acid deposition on pine forest ecosystems in Longli of Guizhou Province, southwestern China are studied using indoor experiments and model simulations. Indoor experiments are designed to explore the aluminum toxicity on pine seedlings, and the long-term soil acidification model (LTSAM) and a terrestrial biogeochemistry model (CENTURY) are used to simulate the influences of acid deposition on pine forest ecosystems. The indoor experiment results of aluminum toxicity show that aluminum ions in solution limit plant growth and acid deposition enhances this effect by facilitating the release of aluminum ions from the soil. Pine seedling biomass and root elongation decrease as the aluminum concentration increases. The results of model simulations show that the soil chemistry varies significantly with different changes in acid deposition. When the acid deposition increases, the pH value in the soil solution decreases and the soil Al 3+ concentration increases. The increased acid deposition also has negative impacts on the forest ecosystem, i.e., decreases plant biomass, net primary productivity (NPP) and net CO 2 uptake. As a result, the soil organic carbon (SOC) decreases because of the limited supply of decomposition material. Thus acid deposition need be reduced to help protect the forest ecosystems.

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Section: Data Collectionmentioning

confidence: 99%

“…cma.gov.cn/). The data of soil texture was referred from Larssen et al (1998), and the other soil properties are measured in the study area in 2007. The maturation age and the allocation ratio for productivity among different organs were referred from Feng et al (1999).…”

Section: Simulation Of Biomass and Production (Cent-ury)mentioning

confidence: 99%

Effects of aluminum toxicity induced by acid deposition on pine forest ecosystem in Longli of Guizhou Province, Southwestern China

et al. 2015

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“…Since the beginning of the 1990s, significant studies on acid deposition have been conducted from the macroscale perspective of pollution pattern, comprehensive monitoring, and control strategy of atmospheric S deposition in certain karst catchments in this region (e.g., Zhao et al, 1994;Seip et al, 1995). Other studies recently reported the effects of atmospheric S deposition on the chemical composition of soil and river water (focused mainly on soil acidification, aluminum remobilization, and increasing SO 4 2− concentration in river water) (e.g., Larssen et al, 1998;Zhao et al, 2001;Han and Liu, 2004;Li et al, 2008). However, to our knowledge, previous studies have focused mainly on the biogeochemical processes of S in soils; studies on their environmental implications in karst areas of southwestern China remain limited.…”

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Speciation and Isotopic Composition of Sulfur in Limestone Soil and Yellow Soil in Karst Areas of Southwest China: Implications of Different Responses to Acid Deposition

et al. 2014

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The contents and stable S isotope ratio (δS) values of total S, organic S, SO-S, and total reduced inorganic S (TRS) in typical limestone soil and yellow soil were analyzed in this study to examine the general distributions of S forms and their δS values in soils in karst areas of southwest China. Under a similar level of acid deposition, the vertical profiles of the S forms and their δS values differed in limesto\ne soil and yellow soil, indicating the different geochemical responses of these soils to acid deposition. The deposited SO was retained as organic S in both soils. The depletion in S of TRS relative to SO and the parallel increasing δS values of TRS and SO indicate a bacterial reduction process of sulfate in both soils. The different extents of C-bonded S mineralization and organic sulfate transport explain the different vertical profiles of total S and organic S contents in both soils. Sulfate adsorption in limestone soil was negligible because of high pH values. Sulfate adsorption in yellow soil was another important S retention process in addition to biological S retention to form organic S and TRS because of low pH values. The effect of acid deposition on yellow soil appeared more serious because of the accumulation and leaching of deposited SO, which can result in soil acidification and accelerate the loss of basic cations from yellow soil. However, compared with yellow soil, limestone soil released more S into rivers by organic S mineralization after a large decrease in annual S deposition rate.

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Simulated effects of climate change and acid deposition on soil chemical conditions in a Masson Pine forest of SW China

Sogn

Wang

et al. 2012

Z. Pflanzenernähr. Bodenk.

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In SW China, acid deposition has been associated with forest damage such as defoliation and mortality due to serious soil acidification. These effects may be exacerbated by ongoing climate change. Understanding the integrated effects of climate change and acid deposition on soil chemistry of forest ecosystems is the key to alleviate forest damage and recover forest health. In particular, the long-term development of integrated effects is unclear and, thus, prevents setting up cost-effective controls of atmospheric deposition for improved forest-health management. We employed the Nutrient Cycling Model (NuCM) to predict the changes of soil chemistry in a Masson pine (Pinus massoniana) forest at Tie-Shan-Ping (nearby Chongqing, the biggest city in SW China) under two scenarios of climate change and five scenarios of atmospheric deposition. Field-monitoring data were used to calibrate and validate the NuCM model. It is shown that the maintaining of current acid deposition both in its quantity and composition would not enhance soil acidification although it would take further 20 years to reach a steady state with higher SO 2À 4 and Ca 2+ concentrations in soil solution. This simulated trend is in contradiction to the decrease of soil pH observed in field during last several decades. The possible reason of this may be the obviously elevated deposition of Ca 2+ , which may help to raise the pH of soil solution but occurred only in recent several years following the rapid increase of local construction industry. However, this enhanced Ca 2+ input may not be maintained for long time. A decreased S input would lead to some positive effects on soil chemistry such as the increase of soil base saturation. A high N deposition has implicated the forest ecosystem to be saturated with N, and increased N input will further aggravate soil acidification and nutrient imbalances. The future climate change projected by IPCC, i.e., the increase of temperature and rainfall may slightly enhance the negative effect of increased N input. The integrated effect of climate change and N-deposition increase may counteract the positive effects of decreased S input to a considerable degree. This supports the need for a rigorous implementation of new technology to decrease the emission of both S and N.

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Cited by 37 publications

References 25 publications

Effects of aluminum toxicity induced by acid deposition on pine forest ecosystem in Longli of Guizhou Province, Southwestern China

Effects of aluminum toxicity induced by acid deposition on pine forest ecosystem in Longli of Guizhou Province, Southwestern China

Speciation and Isotopic Composition of Sulfur in Limestone Soil and Yellow Soil in Karst Areas of Southwest China: Implications of Different Responses to Acid Deposition

Simulated effects of climate change and acid deposition on soil chemical conditions in a Masson Pine forest of SW China

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