Biogeochemical Cycling and SMB Model to Assess Critical Loads of Nitrogen and Acidity for Terrestrial Ecosystems in the
The article presents the results of evaluation of critical loads (CLs) of acidity and nutrient nitrogen for terrestrial ecosystems of the Yamal Peninsula, which is the region of largest gas fields in Russia. CLs calculation was carried out using SMB model
- PDF / 613,620 Bytes
- 13 Pages / 439.37 x 666.14 pts Page_size
- 21 Downloads / 179 Views
Abstract The article presents the results of evaluation of critical loads (CLs) of acidity and nutrient nitrogen for terrestrial ecosystems of the Yamal Peninsula, which is the region of largest gas fields in Russia. CLs calculation was carried out using SMB model widely applied for the calculation of CLs and their exceedances in the framework of the Convention on LRTAP. The calculations have been performed using three temperature scenarios: current climate, warming and cooling. The calculated values of CLs for acidifying effects of atmospheric deposition in conservative scenario were ranged from less than 100 up to 600 eq ha−1 yr−1, mean values were equal to 200–400 eq ha−1 yr−1. The values of CLs of nutrient nitrogen were in average 140–350 eq ha−1 yr−1 or 2–5 kg N ha−1 yr−1. According to our estimation, the decrease an annual temperature on 2 °C may lead to reducing CLs nutrient nitrogen in the north of the peninsula, and CLs acidity in the southern part. The temperature increase on 1 °C may have a positive influence on values of CLs acidity in northern, and CLs nutrient nitrogen in central and southern part of the Yamal Peninsula. Keywords Nitrogen deposition • Critical loads • Arctic ecosystems
I.V. Priputina (*) Institute of Physicochemical and Biological Problems of Soil Science of Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russian Federation e-mail: [email protected] V.N. Bashkin Institute of Physicochemical and Biological Problems of Soil Science of Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russian Federation Institute of Natural Gases and Gas Technologies—Gazprom VNIIGAZ LLC, Razvilka, Moscow Region 142719, Russian Federation A.V. Tankanag Institute of Cell Biophysics of Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russian Federation © Springer International Publishing Switzerland 2017 V.N. Bashkin (ed.), Biogeochemical Technologies for Managing Pollution in Polar Ecosystems, Environmental Pollution 26, DOI 10.1007/978-3-319-41805-6_10
117
118
1
I.V. Priputina et al.
Introduction
According to many available data, anthropogenic emission of sulfur (S) and nitrogen (N) is considered among the main sources of the Arctic ecosystems pollution. High levels of S emissions in 1970s and 1980s were associated with production of copper and nickel from sulfur-bearing ores on the Kola Peninsula and in Norilsk region, Russia (Hole et al. 2006). Beginning from 1990s, there are decreasing trends of acidic deposition within the Arctic. Anthropogenic N deposition in the Arctic region is linked with human activity on natural fuel extraction and its transport by pipelines. Plans for the development of hydrocarbon fields in the Northwest Russian Arctic (Saneev et al. 2015) suggest that ecosystems of this region might receive elevated inputs of reactive N in the next decades. Ecological consequences of impacts of enriched N deposition include risks of damage of natural biogeochemical cycles resulting in eutrophication and acidification of ecosystems. Arctic and sub
Data Loading...
