DEFORESTATION AROUND THE WORLD - India Environment Portal

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148 Deforestation Around the World developing world is still at its infancy yet; it has been extensively used in Europe and North America. Recognizing the importance of reliable tool for forest monitoring both for environmental sustainability as well as economic well being, there is, therefore, need to explore the tool in the developing world. The specific objectives of study are to: i. identify the categories of land use and land cover from remotely sensed images; ii. measure the areal extent of each of the land uses/covers iii. assess the rate(s) of change in land use and forest area and compare the rates of change over time; and iv. analyze the temporal patterns of land use and changes in forest coverage area over the period 1978-2003 2. The study area Studies on deforestation can be carried out in any part of the world where growth in human population has taken place, which still has potential for further growth and development. The choice of the study area is however, guided by the primary objective of the study to examine the occurrence of deforestation, which is better perceived in area where there has been rapid urbanization as the case of the study area. The study area is a region located in Southwestern Nigeria, well known for its dense forest resources and fertile soils. However, as a result of rapid population growth, which led to the development of urban centres and increased farming activities, much of the forest areas have been converted to farmlands, perhaps to meet the needs of the teaming population. The emerging concern about the disappearance of forests in the study area therefore presents the reason for a study of this nature. Coincidentally there is a preponderance of various types of data from which the type of study envisaged here can be expected with minimum difficulty. Besides, the concern for sustainability provides the impetus for the choice of the area. The study area spans part of Osun and Ekiti States (Figure1) and lies within latitude 7° 30´ and 7° 45´ North of equator and longitude 4° 30´ and 5° 00´ East of the Greenwich (Figure 2). It is about 866.25 sq kilometres rectangle in size. On the Nigeria topographical map, it is found in Ilesa sheet 243. The relief is rugged with undulating areas and granitic outcrops in several places. The notable ones among the hills are the Efon-Alaaye hill to the east of the study area, and domed hills in Ilesa area. The climate is of the lowland Tropical rain forest type with distinct wet and dry seasons. Many factors are responsible for the removal of forest resources in the area; among them are intensive agricultural practices, the establishment of more local government areas in recent years, the development of tertiary institutions and location of industrial plants as the case of Ilesa, which led to the influx of people to the area and subsequent development of housing estate and infrastructures. According to 1991census figure, the study area is a populated area. Because of the dense population, the area has witnessed great structural development and growth, which in effect brought negative impact to the natural resources. The area of major population concentration is Ilesa with population of 130,321 based on 1991 census figure. Other populated areas include Ijebu-Ijesa, Efon-Alaaye, to mention but a few.
Geospatial Analysis of Deforestation and Land Use Dynamics in a Region of Southwestern Nigeria or B ipe Ob ok un Iles ha We st EK ITI OS UN Iles ha Sou th Ori ad e A ta ku mo sa E as t A ta ku mo sa W es t E fo n E k iti W e st OSUN Boripe Obokun Ilesha West Ilesha South Oriade Atakumosa West Atakumosa East Efon Ekiti West EKITI 50 0 50 100 Kilometers LEGEND Ekiti state Osun state Fig. 1. The LGAs of the study area 415000 410000 405000 400000 395000 390000 385000 775000 Osu 775000 780000 Ilase Ibodi 780000 785000 Idom inasi ILESA 785000 LGAs of the study area 790000 790000 795000 795000 800000 800000 805000 Ilare Esa-Odo Esa-Oke Ipole Iloko Iw araja Ijebu-Ijesa Ijeda Erinmo Erin-Ijesa Erin-Oke Ipetu-Ijesa 805000 6.8 0 6.8 13.6 Kilometers Fig. 2. Major communities of the study area 810000 Aramoko-Ekiti 810000 Ikogosi Ogotun 815000 815000 W 415000 410000 405000 400000 395000 390000 385000 N S E LEGEND W Main road Major Towns N S E 149
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DEFORESTATION AROUND THE WORLD Edit
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Contents Preface IX Part 1 Deforest
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Preface Forests are giant reservoir
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Preface XI thankful to Maja Bozicev
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Part 1 Deforestation Impacts
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54 S.N. Reference 1 2 3 4 5 6 Otter
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60 7. Model results Deforestation A
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92 5. Conclusions Deforestation Aro
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Part 3 Preventing Deforestation
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324 3. Results and discussion Defor
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354 Southgate (1990) Larson (1991)
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366 7. Acknowledgment Deforestation
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