塔里木河下游输水后生态效应地研究.pdf

  1. 1、本文档共64页,可阅读全部内容。
  2. 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
  3. 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载
  4. 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
查看更多
Research on ecological effect in the lower reaches of Tarim River after water transport Cui Wangcheng (Grassland Science) Surpervised by Xu Peng Ecological water transport in the lower reaches of Tarim River has obvious effect on natural vegetation retrieval, green corridor protection and environment reform. On current conditions, the only approach to save natural vegetation is ecological water transportation. 1. The response of groundwater level is obvious. Along the watercourse in the lower reaches, the response of groundwater level is gradually weakened along with the distance of water transport increase. The transverse response scope of groundwater level is gradually enlarged along with time and frequency of water transport increase. The response width of groundwater level is within 800m by the monitored data (at Yingsu section). 2. The response scope of natural vegetation in the lower reaches is obvious. Within 350-750m in width, the rise of groundwater level was 1-3 meters, only Populus euphratica or Tamarix families could accommodate to that environment. Once in a while, sporadic herbage could survive in the billabong. Outside 750m in width, the change of vegetation isn’t bigger than before water transport. So, the widest response scope of vegetation in the lower reaches of Tarim River after water transport was the 750m. 3. Optimized the project of ecological water transport in the lower reaches of Tarim River. The natural vegetation nearby the watercourse is saved and restored along with water transport. The response scope of Populus euphratica is enlarged from 200~250m in width after the first water transport to 750m after the forth water transport. Therefore it is significant to confirm

文档评论(0)

llllss930 + 关注
实名认证
内容提供者

该用户很懒,什么也没介绍

1亿VIP精品文档

相关文档