摘要
利用ArcView 3.2对2003年石羊河流域TM卫星影像数据进行分析处理,获取了流域植被覆盖状况,应用基于生态适宜性理论的天然植被生态需水量计算模型对研究区域天然植被生态需水量进行定量计算。结果表明,计算结果与潜水蒸发法相近,植被概率与地下水位埋深变化呈单峰形,分布概率越高对应越适宜的地下水位埋深。
This paper analyzes and handles data of TM remote sensing image in Shiyang river basin in 2003, by means of geographic information system software, ArcView3.2. On the basis of regionalization and statistic of investigation data, the status of vegetation coverage was obtained. It applied the calculation model of ecological water requirement of natural vegetation on basis of ecosystem adaptability theory. The result indicates that the calculation result method based on ecosystem adaptability theory is quite close to the method of phreatic evaporation. Change of frequency of vegetation （forest land, shrubbery grass land） and ground-water table has possessed single peak, higher distribution frequency corresponds more suitable groundlwater table.
出处
《水电能源科学》
北大核心
2009年第1期51-53,87,共4页
Water Resources and Power
基金
教育部科学技术研究基金资助重点项目(104197)
关键词
石羊河流域
生态需水量
潜水蒸发
天然植被
Shiyang river basin
ecological water requirement
phreatic evaporation
natural vegetation
