• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Lakes & Reservoirs >Dryland lakes1
【24h】

Dryland lakes1

机译：旱地湖泊 1

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

Dry regions of the world, that is, hyper-arid to subhumid regions that are mostly warm to hot and so-called ‘drylands’, cover almost 50% of the total land area. They are inhabited by human populations that are approaching one billion worldwide. Despite low rainfall levels, dry regions have some of the world’s largest lakes and reservoirs. They also have the widest variety of standing water types that include permanent freshwater lakes and reservoirs, temporary freshwater lakes, and permanent and temporary saline lakes. Many characteristics of these waters are different from waters in temperate, better-watered areas, upon which most limnological knowledge is based. Notwithstanding many economic, scientific, ecological and other values, lakes in drylands are subject to extensive and intensive anthropogenic impacts. Included are almost all those affecting lakes in temperate, tropical and subtropical regions, as well as some impacts more or less confined to dryland lakes, especially salinization. These anthropogenic impacts and their importance have not been fully recognized at national and international levels.
机译：世界上的干旱地区，即高度干旱到半潮湿的地区，这些地区通常是温暖到炎热的所谓“干旱地区”，几乎覆盖了总土地面积的50％。他们居住着全世界近十亿人口。尽管降雨量少，但干旱地区还是有一些世界上最大的湖泊和水库。它们的死水种类也最广泛，包括永久性淡水湖和水库，临时性淡水湖以及永久性和临时性盐湖。这些水的许多特征不同于温带水，较好水域的水，而大多数林学知识都是基于此。尽管具有许多经济，科学，生态和其他价值，但干旱地区的湖泊仍受到广泛而强烈的人为影响。几乎所有影响温带，热带和亚热带地区的湖泊的因素都包括在内，以及一些或多或少地局限于旱地湖泊，特别是盐碱化的影响。这些人为影响及其重要性尚未在国家和国际一级得到充分认识。

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