Investigation of the Role of Roadside Ditch Networks as Contributors to Flooding,Droughts and Degrad

来源 :环境保护与可持续发展国际研讨会(Proceedings of International Workshop in Con | 被引量 : 0次 | 上传用户:a574150767
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  The problems associated with floods,droughts,and degraded water quality are increasing worldwide.There is a growing recognition that these problems are caused,in part,by human impacts to watersheds.Land uses throughout each watershed directly influence the pathways and rates of water movement and therefore the hydrologic processes of runoff,groundwater infiltration,and evapo-transpiration.In particular,clearing away natural vegetated communities and replacing them with the impervious surfaces of roads,roofs and parking lots,and by more compacted soils having reduced organic matter,all contribute to increased runoff,greater evaporative losses,and less groundwater infiltration.
其他文献
会议
  A systematic conservation planning method using irreplaceability (Ir) values of conservation planning units were calculated using C-plan software for northe
会议
  The National Conservation of Snake Island and Laotieshan Mountain is mainly to protect a rare snake called Gloydius Shedaoensis Zhao,the only place in the w
  Karst areas are one of the most fragile regions in the world.The karst environment is very common in southwest China where poverty and environmental degrada
会议
  Northern Tibet is the headstream region for the Yangtze,Nu (Salween River),Laneang (Mekong River),and numerous other inflowing rivers and high mountain lake
  The meadow ecosystems of the Qinghai-Tibetan plateau,the largest rangeland in China,has been degrading recently due to over-exploitation and natural hazards
会议
  We have revised some of the parameters of the classical USLE model,through 3S technology,and conducted a numerical simulation and quantitative analysis of s
  Subtropical evergreen broad-leaved forests (EBLF) of Yunnan,China,including mid-montane moist,monsoon,and semi-humid categories,were studied in terms of str
会议