Rice cultivation in lowlands plays an important role for population livelihood in lower Casamance. This economic activity is known to be affected by many contraints which are climate change and soil salinity. soil salinity is observed in rice fields and in the vegetation cover of Boutolate sub-watershed which covers an area of 6594,21 ha. Due to this situation, anti-salt micro-dams were built to retain water and also changes in land use around the area. This work aims to study rice field area and vegetation cover dynamics in the sub-bassin area located in the south-western of Lower Casamance. An overall time period of 26 years was considered in our study. The satellite imagery Landsat TM of 1984 and 2003 and ETM+ of 2000 and 2010 combined with field ground data was used to analyze the rice field area, vegetation cover dynamics and to understand the impacts of climatic and anthropogenic factors on its evolution. Floristic inventory was also done using plot size 3x3m along the upstream and downstream of micro-dams. In each plot, soil samples were taken for laboratory analysis to determine the impacts of geological factors on herbaceous strata in cultivable paddy area. The results showed a decrease of area paddy during these periods. The decrease in cultivated area was due to rainfall deficit which increased soil salinity and the worse management and monitoring plan after micro-dams were established in 2004. These caused floods which affected 0,93% of upstream rice-growing units in 2010 . The increase of shrub-tree savannah between 1984 and 2010 was due to the natural regeneration. The natural regeneration was favored by the decrease of fraudulent logging related to insecurity in the area and the expansion of fruit trees, particularly Anacardium occidentale. Anacardium occidentale area increased between 2000 and 2010. The soil physical parameters influenced significantly on density and diversity of herbaceous
| Published in | American Journal of Environmental Protection (Volume 3, Issue 2) |
| DOI | 10.11648/j.ajep.20140302.16 |
| Page(s) | 73-82 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2014. Published by Science Publishing Group |
Lower Casamance, Micro-Dams, Vegetation Cover, Rice Field, Satellite Imagery, Supervised Classification, Geological Parameters, Land Use
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APA Style
Hyacinthe. Sambou, Bienvenu. Sambou, Amadou. Tahirou. Diaw, Cheikh. Mbow, Vieux. Boukhaly. Traore. (2014). Remote Sensing Mapping of the Rice Field and Vegetal Cover and the Impacts of Soil Factors on Herbaceous in the Sub-Watershed of Boutolate (Lower Casamance, Senegal). American Journal of Environmental Protection, 3(2), 73-82. https://doi.org/10.11648/j.ajep.20140302.16
ACS Style
Hyacinthe. Sambou; Bienvenu. Sambou; Amadou. Tahirou. Diaw; Cheikh. Mbow; Vieux. Boukhaly. Traore. Remote Sensing Mapping of the Rice Field and Vegetal Cover and the Impacts of Soil Factors on Herbaceous in the Sub-Watershed of Boutolate (Lower Casamance, Senegal). Am. J. Environ. Prot. 2014, 3(2), 73-82. doi: 10.11648/j.ajep.20140302.16
AMA Style
Hyacinthe. Sambou, Bienvenu. Sambou, Amadou. Tahirou. Diaw, Cheikh. Mbow, Vieux. Boukhaly. Traore. Remote Sensing Mapping of the Rice Field and Vegetal Cover and the Impacts of Soil Factors on Herbaceous in the Sub-Watershed of Boutolate (Lower Casamance, Senegal). Am J Environ Prot. 2014;3(2):73-82. doi: 10.11648/j.ajep.20140302.16
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author = {Hyacinthe. Sambou and Bienvenu. Sambou and Amadou. Tahirou. Diaw and Cheikh. Mbow and Vieux. Boukhaly. Traore},
title = {Remote Sensing Mapping of the Rice Field and Vegetal Cover and the Impacts of Soil Factors on Herbaceous in the Sub-Watershed of Boutolate (Lower Casamance, Senegal)},
journal = {American Journal of Environmental Protection},
volume = {3},
number = {2},
pages = {73-82},
doi = {10.11648/j.ajep.20140302.16},
url = {https://doi.org/10.11648/j.ajep.20140302.16},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajep.20140302.16},
abstract = {Rice cultivation in lowlands plays an important role for population livelihood in lower Casamance. This economic activity is known to be affected by many contraints which are climate change and soil salinity. soil salinity is observed in rice fields and in the vegetation cover of Boutolate sub-watershed which covers an area of 6594,21 ha. Due to this situation, anti-salt micro-dams were built to retain water and also changes in land use around the area. This work aims to study rice field area and vegetation cover dynamics in the sub-bassin area located in the south-western of Lower Casamance. An overall time period of 26 years was considered in our study. The satellite imagery Landsat TM of 1984 and 2003 and ETM+ of 2000 and 2010 combined with field ground data was used to analyze the rice field area, vegetation cover dynamics and to understand the impacts of climatic and anthropogenic factors on its evolution. Floristic inventory was also done using plot size 3x3m along the upstream and downstream of micro-dams. In each plot, soil samples were taken for laboratory analysis to determine the impacts of geological factors on herbaceous strata in cultivable paddy area. The results showed a decrease of area paddy during these periods. The decrease in cultivated area was due to rainfall deficit which increased soil salinity and the worse management and monitoring plan after micro-dams were established in 2004. These caused floods which affected 0,93% of upstream rice-growing units in 2010 . The increase of shrub-tree savannah between 1984 and 2010 was due to the natural regeneration. The natural regeneration was favored by the decrease of fraudulent logging related to insecurity in the area and the expansion of fruit trees, particularly Anacardium occidentale. Anacardium occidentale area increased between 2000 and 2010. The soil physical parameters influenced significantly on density and diversity of herbaceous},
year = {2014}
}
TY - JOUR T1 - Remote Sensing Mapping of the Rice Field and Vegetal Cover and the Impacts of Soil Factors on Herbaceous in the Sub-Watershed of Boutolate (Lower Casamance, Senegal) AU - Hyacinthe. Sambou AU - Bienvenu. Sambou AU - Amadou. Tahirou. Diaw AU - Cheikh. Mbow AU - Vieux. Boukhaly. Traore Y1 - 2014/04/20 PY - 2014 N1 - https://doi.org/10.11648/j.ajep.20140302.16 DO - 10.11648/j.ajep.20140302.16 T2 - American Journal of Environmental Protection JF - American Journal of Environmental Protection JO - American Journal of Environmental Protection SP - 73 EP - 82 PB - Science Publishing Group SN - 2328-5699 UR - https://doi.org/10.11648/j.ajep.20140302.16 AB - Rice cultivation in lowlands plays an important role for population livelihood in lower Casamance. This economic activity is known to be affected by many contraints which are climate change and soil salinity. soil salinity is observed in rice fields and in the vegetation cover of Boutolate sub-watershed which covers an area of 6594,21 ha. Due to this situation, anti-salt micro-dams were built to retain water and also changes in land use around the area. This work aims to study rice field area and vegetation cover dynamics in the sub-bassin area located in the south-western of Lower Casamance. An overall time period of 26 years was considered in our study. The satellite imagery Landsat TM of 1984 and 2003 and ETM+ of 2000 and 2010 combined with field ground data was used to analyze the rice field area, vegetation cover dynamics and to understand the impacts of climatic and anthropogenic factors on its evolution. Floristic inventory was also done using plot size 3x3m along the upstream and downstream of micro-dams. In each plot, soil samples were taken for laboratory analysis to determine the impacts of geological factors on herbaceous strata in cultivable paddy area. The results showed a decrease of area paddy during these periods. The decrease in cultivated area was due to rainfall deficit which increased soil salinity and the worse management and monitoring plan after micro-dams were established in 2004. These caused floods which affected 0,93% of upstream rice-growing units in 2010 . The increase of shrub-tree savannah between 1984 and 2010 was due to the natural regeneration. The natural regeneration was favored by the decrease of fraudulent logging related to insecurity in the area and the expansion of fruit trees, particularly Anacardium occidentale. Anacardium occidentale area increased between 2000 and 2010. The soil physical parameters influenced significantly on density and diversity of herbaceous VL - 3 IS - 2 ER -
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