Effect of watershed land use on water quality: a case study in Corrego da Olaria Basin, Sao Paulo State, Brazil

被引:18
作者
Simedo, M. B. L. [1 ]
Martins, A. L. M. [2 ]
Pissarra, T. C. T. [3 ]
Lopes, M. C. [2 ]
Costa, R. C. A. [1 ]
Valle-Junior, R. F. [4 ]
Campanelli, L. C. [5 ]
Rojas, N. E. T. [6 ]
Finoto, E. L. [2 ]
机构
[1] Univ Estadual Paulista UNESP, Programa Posgrad Agron Ciencia Solo, Fac Ciencias Agr & Vet, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
[2] SAA, Polo Reg Ctr Norte, Dept Descentralizacao Desenvolvimento APTA, Rodovia Washington Luis,Km 371 S-N, BR-15830000 Pindorama, SP, Brazil
[3] Univ Estadual Paulista UNESP, Dept Engn Rural, Fac Ciencias Agr & Vet, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil
[4] IFTM, Rua Joao Batista Ribeiro 4000,Dist Ind 2, BR-38064790 Uberaba, MG, Brazil
[5] Campanelli Consultoria Empresarial Ltda, Ave Gardenias,325 Fundos, BR-13566540 Sao Carlos, SP, Brazil
[6] SAA, Ctr Pesquisa Pescado Continental, Inst Pesca, Dept Descentralizacao Desenvolvimento APTA, Av Abelardo Menezes S-N, BR-15025970 Sao Jose Do Rio Preto, SP, Brazil
基金
巴西圣保罗研究基金会;
关键词
soil management; agroecosystems; land use policy; RIVER-BASIN; DONGJIANG RIVER; GROUNDWATER; PARANA;
D O I
10.1590/1519-6984.168423
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
The water quality is related to the hydrologic and limnologic properties of ground and surface water, and significant efforts have been made to monitor water sources to understand the effects of land use changes in agricultural areas, with significant socioeconomic activities. The objective of this study was to evaluate the qualitative aspects of surface water in subbasins related to land use. Samples were analyzed in terms of physical and chemical parameters on monthly discrete water quality sampling in four representative sites at first order subbasin streams, located at the Polo Regional Centro Norte, Pindorama County, State of Sao Paulo, Brazil. The land use classification was made by visual detection technique in a multispectral satellite data obtained from LandSat8- spectral bands of the OLI sensor. The watershed was classified into major land cover/use classes and overlay maps generated in ArcGIS 10 indicated a significant shift from natural vegetation to agriculture activities. Water quality monitoring was according to the brazilian protocol and the results were submitted to analysis of variance (ANOVA). The values obtained differ significantly at each sampling point - subbasins, reflecting the effects of land use on water quality. Soil conservation management is important to optimize soil use in order to contribute to the control of water pollution and the formulation of a public policy is necessary for the conservation of water and soil resources.
引用
收藏
页码:625 / 635
页数:11
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