季节性溪流水化学对长期林业排水和野火的响应:大瓦苏干沼泽部分地区的案例研究

Q2 Agricultural and Biological Sciences
Yulia A. Kharanzhevskaya
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引用次数: 0

摘要

最近的研究表明,气候变化导致溪流中的溶质浓度上升。本研究的重点是评估主要元素、营养物质和溶解有机碳 (DOC) 的浓度,以及它们通过西西伯利亚泰加地带的沼泽-河流系统释放的情况。研究在大瓦苏干沼泽(GVM)东北部进行,该沼泽是影响鄂毕河流域河流水质的最大沼泽系统。通过使用 PCA 和聚类分析,我们研究了受排水和野火影响的大瓦斯干沼泽地上游溪流化学成分的长期动态变化。2015-2022 年的数据显示,龙卷风流域排水区溪水中的Са2+、Mg2+、K+、Na+ 和 HCO3- 的浓度平均比原始地点低 1.3 倍。相反,NH+4、Fetotal、Cl-、SO42-、NO-3、DOC 和 COD 的浓度却较高,这表明林业排水和热源因子的影响。我们的研究结果还表明,龙8国际pt娱乐官网对小河流的水化学成分有很大影响。我们观察到,龙卷风和加夫里洛夫卡河水中的К+、Na+、Cl-、Fetotal、NH+4、HCO3- 和 COD 浓度密切相关。PCA 分析表明,气温对研究河流中的Са2+、Mg2+、NH4+、NO3-、HCO3-、Fetotal 和 DOC 的浓度有影响,且与河流排水量成反比。龙门山脉排水区主要元素、营养物质和 DOC 的去除量在四月份最为明显,是原始区的两倍。然而,2022 年 4 月至 9 月期间,加夫里洛夫卡排水区的总排放量比原始区域低 1.3 倍,为 8487 千克/平方公里,其中溶解氧去除率为 42%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Seasonal Stream Water Chemistry Response To Long-Term Forestry Drainage And Wildfire: A Case Study In A Part Of The Great Vasyugan Mire
Recent research suggests that climate change is contributing to rising solute concentrations in streams. This study focuses on assessing the concentrations of major elements, nutrients, and dissolved organic carbon (DOC), and their release through the bog-river system in the taiga zone of Western Siberia. The research was carried out in the northeastern part of the Great Vasyugan Mire (GVM), the largest mire system that impacts the quality of river water in the Ob River basin. By using PCA and cluster analysis, we examined the long-term dynamics of the chemical composition of headwater streams of the GVM affected by drainage and wildfires. Our data from 2015-2022 revealed that the concentrations of Са2+, Mg2+, K+, Na+, and HCO3- in stream water from the drained area of the GVM were, on average, 1.3 times lower than those at the pristine site. Conversely, the  concentrations of NH+4, Fetotal, Cl-, SO42-, NO-3, DOC, and COD were higher, indicating the influence of forestry drainage and the pyrogenic factor. Our findings also demonstrated that the GVM significantly impacts the water chemical composition of small rivers. We observed a close correlation in the concentrations of К+, Na+, Cl-, Fetotal, NH+4, HCO3-, and COD between the GVM and the Gavrilovka River waters. PCA analysis revealed that air temperature influences the concentrations of Са2+, Mg2+, NH4+, NO3-, HCO3-, Fetotal, and DOC in the studied streams, with an inverse correlation with river discharge. The removal of major elements, nutrients, and DOC from the drained area of the GVM was most pronounced in April, being twice as high as in the pristine area. However, the total export from the drainage area of the Gavrilovka in April-September 2022 was 1.3 times lower than in the pristine area, amounting to 8487 kg/km2, with DOC removal at 42%. 
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来源期刊
Geography, Environment, Sustainability
Geography, Environment, Sustainability Social Sciences-Geography, Planning and Development
CiteScore
2.50
自引率
0.00%
发文量
37
审稿时长
12 weeks
期刊介绍: Journal “GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY” is founded by the Faculty of Geography of Lomonosov Moscow State University, The Russian Geographical Society and by the Institute of Geography of RAS. It is the official journal of Russian Geographical Society, and a fully open access journal. Journal “GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY” publishes original, innovative, interdisciplinary and timely research letter articles and concise reviews on studies of the Earth and its environment scientific field. This goal covers a broad spectrum of scientific research areas (physical-, social-, economic-, cultural geography, environmental sciences and sustainable development) and also considers contemporary and widely used research methods, such as geoinformatics, cartography, remote sensing (including from space), geophysics, geochemistry, etc. “GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY” is the only original English-language journal in the field of geography and environmental sciences published in Russia. It is supposed to be an outlet from the Russian-speaking countries to Europe and an inlet from Europe to the Russian-speaking countries regarding environmental and Earth sciences, geography and sustainability. The main sections of the journal are the theory of geography and ecology, the theory of sustainable development, use of natural resources, natural resources assessment, global and regional changes of environment and climate, social-economical geography, ecological regional planning, sustainable regional development, applied aspects of geography and ecology, geoinformatics and ecological cartography, ecological problems of oil and gas sector, nature conservations, health and environment, and education for sustainable development. Articles are freely available to both subscribers and the wider public with permitted reuse.
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