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Environmental and socio-economic impact of land use change. Case study of Gishwati forest in Rwanda

( Télécharger le fichier original )
par Jean de Dieu TWAYIGIRA
National University of Rwanda - Bachelor's degree 2012
  

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3.1.3. GENERALITY ON THE FOREST OF RWANDA

The forests of Rwanda have experienced the alarming deforestation in the last decades which has led to the extinction of the almost their total surface area.

Table 2.Evolution of forests and natural reserves between 1958 and 2000 (in ha)

Formation

1958

1970

1980

1990

1996

2000

now in

%

Natural forests

634 000

591 800

513 600

415 200

383 700

221 200

35

Nyungwe +

Cyamudongo

114 000

108 800

97 500

97 500

94 500

92 400

81

Gishwati

28 000

28 000

23 000

8 800

3 800

6 00

2

Mukura

3 000

3 000

2 100

2 100

1 600

1 200

40

VNP

34 000

16 000

15 000

12 800

12 800

12 000

35

Akagera NP

241 000

241 000

241 000

241 000

241 000

90 000

37

Hunting domain of Umutara

64 000

45 000

45 000

34 000

0

0

0

Savanna

of the

East +

galleries

150 000

150 000

90 000

55 000

30 000

25 000

17

Planted forest

24 500

27 200

80 000

247 000

232 500

252 000

1028 000

Total

658 500

619 000

593 600

696700

616700

473 200

72

Source: NISR, 2005

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Gishwati forest 1900 Gishwati forest 1980

Gishwati forest 2008

Source: Rutabingwa, 2010

Figure 5.Reduction of Gishwati forest

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3.2. PRESENTATION OF RESEARCH FINDINGS AND DISCUSSIONS

When analyzing the impacts of land use change it is important to understand the different land uses being undertaken in the study region, and the variety of ways in which they have been changing in recent years. Land use change is not a simple matter of a shift in the area of land used for a particular commodity; it may involve a range of changes including change in what is produced on the land, how it is produced, and the intensity of production, amongst others.

Understanding land use change requires carefully defining what is considered to be a land use', so that changes in these land uses can be examined. Defining a land use can be challenging -- what activities should be considered to form part of a single land use' when every land use can be undertaken in many ways? While some sectors and interest groups may adopt formal definitions of particular land uses, in this study land uses were defined based on the ways participants defined them in everyday language.

A wide range of land uses in the interviews, and often used multiple terms to refer to a particular land use. It was not always clear where the boundaries of one type of land use ended and another land use began. Interviewers were therefore asked to discuss the similarities and differences between different land uses; to assist in defining what should be considered a single land use, and where an activity may need to be split into more than one type of land use.

The following key categories of land use are discussed in turn below. For each, the various ways the land use was defined, and the way it has been defined for this research based on the discussion held in the interviews, is described:

? Plantation forestry

? ?Rural residential

? ?Cropping

? ?Grazing enterprises

? Pasture land, pine and cupressus plantations

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