...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Limnology >Comparative investigation of chemical and biological characteristics in waters and trophic state of Mongolian lakes
【24h】

Comparative investigation of chemical and biological characteristics in waters and trophic state of Mongolian lakes

机译：蒙古湖水体和营养状态的化学和生物特征比较研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The objective of this study is to describe the biogeochemical characteristics in the waters of Mongolian lakes, particularly those related to parameters limiting phytoplankton growth and the trophic state. Investigations into the distribution of chemical and biological parameters were carried out in the following 18 lakes: Har Us, Har, Hovsgol, Achit, Dalai, Bayan, Tolbo, Holboo, Bust, Sangiyn Dalai, Tunamal, Dorgon, Uureg, Telmen, Hyargas, Uvs, Erkhel and Oygon, all of which showed a wide range of salinity between 0.16 and 24.9 g l(-1). Lake water was classified into four types: six fresh (less than 0.5 g l(-1) salinity), three subsaline (0.5-3 g l(-1)), seven hyposaline (3-20 g l(-1)) and two mesosaline (20-50 g l(-1)) lakes. Predominant cations and anions in the order of dominance were Ca, Mg > Na > K and HCO3 > SO4, Cl in freshwater lakes, Na > Mg > Ca, K and HCO3, Cl > SO4 in subsaline lakes, and Na > Mg > K, Ca and Cl, SO4 > HCO3 in hyposaline and mesosaline lakes. Nitrogenous and phosphorus nutrients in the waters were low, seemingly caused by the low loads from their watersheds, where the ground was free of vegetation with an extremely low level of human activity. The present investigations revealed some 234 taxa of phytoplankton and 38 of zooplankton. The PC:PN:PP stoichiometric ratio by weight was (22-202):(3-27):1. Phosphorus was assessed as the potential limiting parameter in eight lakes, nitrogen in six and both nutrients in four others. Twelve lakes showed an oligotrophic character, while six were mesotrophic type. The six oligotrophic lakes seemed to be subject to phosphorus limiting phytoplankton growth, four to nitrogen and two to both limitations. In the mesotrophic lakes, on the other hand, phosphorus limitation was verified in two lakes, nitrogen in two others and both in two lakes.
机译：这项研究的目的是描述蒙古湖水域的生物地球化学特征，特别是那些与限制浮游植物生长和营养状态的参数有关的生物地球化学特征。在以下18个湖泊中进行了化学和生物参数分布的调查：哈尔·乌斯，哈尔，霍夫斯科尔，阿奇特，达赖，巴彦，托尔博，霍尔布，半身像，桑吉恩·达莱，图纳马尔，多尔贡，乌雷格，特尔门，海加斯， Uvs，Erkhel和Oygon都显示出0.16至24.9 gl（-1）之间的广泛盐度。湖水分为四类：六种淡水（盐度小于0.5 gl（-1）），三类次盐水（0.5-3 gl（-1）），七种次盐水（3-20 gl（-1））和两种中石碱（20-50 gl（-1））湖泊。占主导地位的阳离子和阴离子依次为：Ca，Mg> Na> K和HCO3> SO4，Cl在淡水湖中; Na> Mg> Ca，K和HCO3; Cl> SO4在次盐湖中; Na> Mg> K ，次氯酸钠和中马赛克湖中的Ca，Cl和SO4> HCO3。水域中的氮和磷养分很低，这似乎是由流域的低负荷造成的，流域的地面上没有植被，人类活动水平极低。目前的调查显示，浮游植物大约有234个分类单元，浮游动物大约有38个。 PC：PN：PP的化学计量重量比为（22-202）:( 3-27）：1。磷被评估为八个湖泊的潜在限制参数，六个湖泊为氮，另外四个湖泊为养分。十二个湖泊表现为贫营养型，而六个为中营养型。六个贫营养湖泊似乎受到限制磷的浮游植物生长的影响，其中四个限制了氮，两个限制了两个。另一方面，在中营养湖泊中，在两个湖泊中都证实了磷的限制，在另外两个湖泊中以及两个湖泊中都证实了氮的限制。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号