Journal of Food, Agriculture and Environment

Water quality parameters associated with soil use and occupation features by Thiessen polygons 

Author(s):

Suzana C. Wrublack *, Erivelto Mercante, Márcio A. Vilas Boas

Recieved Date: 2012-09-14, Accepted Date: 2013-04-20

Abstract:

The need for conservation of water resources, coupled with growing demand for food, has aroused the interest of many researchers who have sought to contribute to agriculture by knowing the environmental characteristics and realities, and by involvement in the quest for sustainable development. This study aimed at characterizing soil use and occupation and water quality using GIS techniques to the municipality of Salto do Lontra, Parana State. The parameters analyzed were: pH, electrical conductivity, bicarbonate, chlorine, phosphate, nitrate, turbidity, temperature and fecal coliforms in two distinct annual rainfall periods. Satellite images were used for soil use and mapping as well as for application of the Thiessen polygon technique to determine the areas of influence on each point of measurement of water quality. Statistical analyses, based on Principal Component Analysis (PCA) and Factorial Analysis (FA) techniques, were used to observe the relationship between soil use and occupation and water quality. The interpretation of images by the Argis 9.3 software allowed maps to be generated of soil use and occupation. Application of the Thiessen polygon technique allowed recognition of areas of influence on each point of measurement of irrigation water according to identification of soil utilization classes on representing polygons at points where there were restrictions on irrigation water use within phosphate and fecal coliform parameters. Application of the PCA technique for water quality data explained 53.27% of the variation among sampled characteristics and it identified two significant axes of variation in order to explain the relationship between soil use and occupation and water quality parameters. 

Keywords:

Geographic information system (GIS), satellite images, areas of  influence, Thiessen Polygon, water quality, water resources, irrigation,  environmental characteristics, soil use and occupation, multivariate analysis

---

Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 2
Category: Environment
Pages: 846-853

---

Full text for Subscribers

---

Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

---

Purchase this Article:   20 Purchase PDF Order Reprints for 15

---

Share this article :