Analyzing the impact of land use change on the minimum temperature in Laguna using Geographic Information SystemAnalyzing the impact of land use change on the minimum temperature in Laguna using Geographic Information System

Date

4-2010

Degree

Bachelor of Science in Agricultural Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Moises A. Dorado

Committee Member

Kirby L. Millare, Vicente Ballaran, Jr.

Abstract

Temperature is oftentimes a limiting factor for the growth of plants specifically rice. It is therefore of great importance in knowing the temperature of an area. Since land cover is one of the factors that greatly influence temperature, the radiation balance equation is used for the computation of temperature to account for different land covers in LAguna., Simulated land cover maps are produced using GIS for the years 2020, 2039, 2040, and 2050. Minimum temperature distribution was then interpolated using Inverse Distance Weighting for each year. It is observed that by 2050, 45.2% of laguna is already converted into built up from a 25% built up in year 202o. Looking at the overall minimum temperature of the area using weighted average equation, it increased from 24.5°C at year 2020 to 25.1°C on year 2050. Small differences in the average minimum temperature observed could be attributed to the small increase of built up area and the scattered distribution of agricultural areas within Laguna. The overall minimum temperature was used to estimate the rice yield. A decrease in rice yield is observed both in tons/ha and in metric tons due to increase in temperature. The rice yield reduced from 7.01 tons/ha in year 2020 to 6.53 tons/ha on year 2050. This study has showed the reduction in rice's performance when the minimum temperature of the area exceeded the rice's optimum minimum temperature.

Language

English

LC Subject

Land use--Geographic information systems, Temperature forecasting, Minimum--Laguna

Location

UPLB College of Engineering and Agro-Industrial Technology

Call Number

LG 993.5 2010 A2 S47

Document Type

Thesis

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