Abstract
In this study, we presented the simulation planning scheme to project land and land resources use changes at a local scale for Diamou (MALI). Problem statement: All the land cover types were under the influence of human and livestock population. Diamou has undergone changes in land-cover over the last decades. The shifting cultivation system practiced was probably the main reason for this state of affairs. Moreover, the dryness and extensive character of pastoral activities had contributed to the general degradation of natural resources. The principal objective of our study was to contribute to the sustainable use of land resources from 1999-2010. Approach: Using formula the resources supply and demand had been estimated based on statistics data, derived from a comprehensive review of the literature. The resources balance (difference between supply and demand) had been estimated for two years 1999 and 2010.The resources demand were measured by an average consumption needs person-1 day-1 multiplied by the population. For the livestock population the biomass demand and supply had been measured based on TLU dietary requirements and the pastureland carrying capacity. The diagram of resources balances were drawn using word Microsoft word command and the simulation land use areas schema using ArcGIS. Results: From present approach, it was found, that, in year 1999 the fuel wood and cereal balances were negative. The drink water and biomass balances were positive. The dominant land use categories were the pastureland and the cropland, occupying about 52 and 45% of total area respectively of the total area 8876 ha. Except the biomass balance in year 2010, all the resources balance were negative. The drink water and fuel wood deficits were equal to 439 and 2801 m3 respectively. The dominant land use class, a cropland covered approximately 45% of total area. Conclusion: Studies had indicated the cereal, fuel wood and drink water resources deficit in years 1999 and 2010.
Highlights
Most land cover modification and conversion is nowadays driven by human use rather than natural change
The shifting cultivation system practiced in Diamou was probably the main reason for this state of affairs
The principal objective of our study was to contribute to reach the sustainable use of land resources from 1999-2010
Summary
Most land cover modification and conversion is nowadays driven by human use rather than natural change. Some locale studies have shown, that since the early 1970s, the Sahel countries have been suffering from chronic food shortages caused by economic crisis, poverty, desertification and climate changes. After Stephenne and Lambin[28,29], the Sudano-sahelian region has undergone changes in land-cover over the last decades[3]. It is still debated to know whether these changes are related to short-term climate fluctuations or longer-term anthropogenic impacts[15,17]. The shifting cultivation system practiced in Diamou was probably the main reason for this state of affairs. The land/man and arable land/ man ratio in Diamou decreased to 3 and 1.4 ha; respectively. According to to the climate type[14,17] most of inventoried soils units are poorly drained, shallow with high gravel content or Massive structure, low fertility
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