The effects of deforestation and climate variability on the streamflow of the Araguaia River, Brazil

被引：156

作者：

Coe, M. T. ^{[1
]}

Latrubesse, E. M. ^{[2
]}

Ferreira, M. E. ^{[3
]}

Amsler, M. L. ^{[4
]}

机构：

[1] Woods Hole Res Ctr, Falmouth, MA 02540 USA

[2] Univ Texas Austin, Dept Geog & Environm, Austin, TX 78712 USA

[3] Univ Fed Goias, IESA, BR-74001970 Goiania, Go, Brazil

[4] Univ Nacl Litoral CONICET CC217, INALI, RA-3000 Santa Fe, Argentina

来源：

BIOGEOCHEMISTRY | 2011年 / 105卷 / 1-3期

基金：

美国国家航空航天局;

关键词：

Cerrado; Discharge; Deforestation; Land cover change; Araguaia River; Geomorphology; LAND-USE CHANGE; SOIL-WATER; HYDRAULIC REDISTRIBUTION; VEGETATION; PATTERNS; BALANCE; CARBON; RATES; CONSERVATION; REANALYSIS;

D O I：

10.1007/s10533-011-9582-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Deforestation changes the hydrological, geomorphological, and biochemical states of streams by decreasing evapotranspiration on the land surface and increasing runoff, river discharge, erosion and sediment fluxes from the land surface. Deforestation has removed about 55% of the native vegetation and significantly altered the hydrological and morphological characteristics of an 82,632 km(2) watershed of the Araguaia River in east-central Brazil. Observed discharge increased by 25% from the 1970s to the 1990s and computer simulations suggest that about 2/3 of the increase is from deforestation, the remaining 1/3 from climate variability. Changes of this scale are likely occurring throughout the 2,000,000 km(2) savannah region of central Brazil.

引用

页码：119 / 131

页数：13

共 57 条

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