Trends in Hydrological Parameters of a Southern Brazilian Watershed and its Relation to Human Induced Changes

被引：115

作者：

Moraes, Jorge M. ^{[1
]}

Pellegrino, Giampaolo Q. ^{[2
]}

Ballester, Maria V.

Martinelli, Luiz A. ^{[1
]}

Victoria, Reynaldo L. ^{[1
]}

Krusche, Alex V. ^{[1
]}

机构：

[1] Univ Sao Paulo, Ctr Energia Nucl Agr, BR-13416000 Piracicaba, SP, Brazil

[2] Univ Estadual Campinas, Ctr Ensino & Pesquisa Agr, BR-13081970 Campinas, SP, Brazil

来源：

WATER RESOURCES MANAGEMENT | 1998年 / 12卷 / 04期

基金：

巴西圣保罗研究基金会;

关键词：

changing-point; human induced changes; hydrology; time series; trend analysis;

D O I：

10.1023/A:1008048212420

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The Piracicaba river basin is a subtropical watershed located in the southeastern region of Brazil. With an area of 12 400 km(2), the basin is a typical example of new landscape resulting from development in tropical and sub-tropical regions: establishment of intensive industrial and agricultural processes were followed by significant population growth and water management. This scenario has led to significant increase in water demand and decrease in water quality. The main objective of this study is the detection of changes in the patterns of flow and precipitation in the basin, and its possible relation to man-induced changes. Statistical analyses were performed on records of precipitation, evapotranspiration and streamflow, from 1947 to 1991. Precipitation and evapotranspiration totals showed significant increasing trends for the entire basin. From eight streamflow gauge stations, half showed significant decreasing trend. The most probable cause of such trends is the export of water from the basin to the metropolitan region of Sao Paulo city.

引用

页码：295 / 311

页数：17

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