巴西Arauaí河流域长期水量平衡分析(英文)

作     者：LEITE Mariangela Garcia Praa FUJACO Maria Augusta Gonalves 

作者机构：Federal University of Ouro PretoGeology DepartmentCampos Morro do Cruzeiro 

出 版 物：《Journal of Geographical Sciences》 (地理学报(英文版))

年 卷 期：2010年第20卷第6期

页      面：938-946页

核心收录：

学科分类：08[工学] 081501[工学-水文学及水资源] 0815[工学-水利工程] 

主　　题：river discharge evaporation Jequitinhonha Basin 

摘      要：Semi-arid and arid areas exhibit great temporal variability in water *** some of these regions,a one-or two-day rainfall is followed by intervening dry periods of variable *** recent decades,many rivers of the semi-arid portion of the Jequitinhonha Basin have been undergoing a progressive discharge reduction,mainly of their base flow,the Arauaí River is one of *** order to understand this transformation,a long-term analysis of the annual water balance of the Arauaí River Basin was performed,the results of which are presented *** images,hydrometeorological and river discharge data were analyzed;mean and variance tests were conducted to determine temporal *** pluviometric data analysis shows no corresponding precipitation reduction and temperature undergoes only a slight increase in the same *** the other hand,evaporation is extremely high,higher than precipitation during most of the year,leaving almost no water for infiltration(aquifer recharge) and ***,the Arauaí headwaters of its tributaries are now occupied by a monoculture,Eucaliptus sp.,used for paper *** of the decreased fluvial discharges,its lowlands,usually used for agriculture and pasture,are abandoned and partially eroded.