Environmental Engineering Reference
In-Depth Information
column shows the numbering of the fields, which were surveyed according to
households. The second column shows the corresponding land-use types as
indicated below:
1. annual cropping
2. agroforestry: non-home garden type
3. fallow
4. orchard
5. native forest
6. home garden: agroforestry type
7. home garden: non-agroforestry type
8. livestock
9. other.
They are a modification of the categories recommended by PLEC's
Biodiversity Advisory Group (Zarin, Huijun, and Enu-Kwesi, 1999)
The third column of Table 6.3, shows richness of plant species found in each
field, which is designated the dependent (Y) variable. The remaining columns
contain possible explanatory variables (X1, X2,..........Xn).
Conclusion
Management regimes and organizational forms are diverse in the demonstration
sites. Variations in richness of the biota appear to be related to this diversity. The
challenge is to give quantitative expression to the relationship.
REFERENCES
Brookfield, H. and C. Padoch, “Appreciating agrodiversity: A look at the dynamics and diver-
sity of indigenous farming systems”,
Environment
, Vol. 36, No. 5, 1994, pp. 6-11, 36-45.
Brookfield, H., M. Stocking, and M. Brookfield, “Guidelines on agrodiversity assessment
in demonstration site areas” (Revised to form a companion paper to the BAG guide-
lines),
PLEC News and Views
, No. 13, 1999, pp. 3-15.
Gyasi, E. A., “Traditional forms of conserving biodiversity within agriculture: Their chang-
ing character in Ghana”, in H. Brookfield, C. Padoch, H. Parsons, and M. Stocking, eds,
Cultivating Biodiversity: Understanding, Analysing and Using Agricultural Diversity
,
London: ITDG Publishing, 2002, pp. 245-255.
Zarin, D. J., G. Huijun, and L. Enu-Kwesi, “Methods for the assessment of plant species
diversity in complex agricultural landscapes: Guidelines for data collection and analy-
sis from the PLEC Biodiversity Advisory Group (PLEC-BAG)”,
PLEC News and Views
,
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