Landscape dynamics specific features of the river Volga estuarine natural systems particularlong inundable territories

M. Valov, A. Barmin, E. Probst, O. S. Eroshkina, A. V. Larin
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Abstract

Multi-method landscape-ecological researches results on stationary parts in the river Volga delta, transformed to rank of natural sanctuary in the period of 1978-2016 are presented in this work. The main landscape dynamics tendencies are discovered, natural and anthropogenous factors of soil and vegetation cover are estimated for peculiar long inundable territories: water-soluble salts cationicanionic analysis and their migration specific features and accumulation in dependence of the limited natural and anthropogenous factors changes for long inundable soil cover for forty years period; integrated effect of meteorological, hydrological, adaphic and anthropogenous factors cumulative changes on different years fluctuations and seral vegetational change for vegetation was revealed. Multi-year researches results show that the main factors, defining content and highly soluble salts radial migration in soils, also vegetation productivity and its species composition are hydrological regime (most of all – spring-summer floodings character) and territory climatic specific features. However, it is necessary to take into account local secondary effects influence, which can have an effective refracted impact on ambient background signals besides the main primary factors effect.
伏尔加河河口自然系统的景观动态特征,特别是长淹没地区
本文介绍了1978-2016年伏尔加河三角洲静止部分转化为自然保护区等级的多方法景观生态学研究成果。发现了主要的景观动态趋势,估算了特殊长淹没区土壤和植被覆盖的自然和人为因子:40年长淹没区土壤覆盖有限自然和人为因子变化对水溶盐迁移特征和积累的依赖;揭示了气象、水文、适应和人为因子累积变化对植被不同年波动和几种植被变化的综合影响。多年来的研究结果表明,水文条件(主要是春夏洪水特征)和地域气候特征是决定土壤含量和高可溶性盐径向迁移、植被生产力及其物种组成的主要因素。但是,有必要考虑局部二次效应的影响,局部二次效应除了主要的主要因素影响外,还会对环境背景信号产生有效的折射影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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