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Perspectives of Remote Sensing and GIS Applications in Tropical Forest Management
Mukete Beckline,
Sun Yujun,
Baninla Yvette,
Achem Baye Joh,
Bakia Mor-Achankap,
Sajjad Saeed,
Tamungang Richard,
Jaba Wose,
Chalwe Paul
Issue:
Volume 5, Issue 3, May 2017
Pages:
33-39
Received:
20 November 2016
Accepted:
13 December 2016
Published:
13 April 2017
Abstract: Tropical forest management requires could be improved through the use of current technologies including remote sensing and Geographic Information System (GIS). In this paper, we characterize and evaluate forest management patterns and relate this to modern technologies such as geographical information systems and remote sensing. We further examine the application of these modern technologies in tropical forestry and conservation. To achieve this, we carried out a comprehensive survey of published scientific literature obtained through Web of Science, Mendeley, Researchgate and Google Scholar. We observed that, the relationships between forestry management, modern technologies have shifted over time. These have depended on how management activities such as planting and harvesting, interact with other drivers and disturbances (fire, pests and diseases) to influence the adaptive capacity of forests. Forest management and new technologies are interrelated because the technologies support management actions; hence contribute to global forest resources management and conservation.
Abstract: Tropical forest management requires could be improved through the use of current technologies including remote sensing and Geographic Information System (GIS). In this paper, we characterize and evaluate forest management patterns and relate this to modern technologies such as geographical information systems and remote sensing. We further examine ...
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Impact of 60 Years of Intensive Rice Cropping on Clay Minerals in Soils Due to Si Exportation
Kamran Irfan,
Fabienne Trolard,
Tanvir Shahzad,
Lise Cary,
Jean-Claude Mouret,
Guilhem Bourrié
Issue:
Volume 5, Issue 3, May 2017
Pages:
40-48
Received:
2 February 2017
Accepted:
17 February 2017
Published:
14 April 2017
Abstract: Rice is cultivated as staple for over half of the World’s population. In Camargue (South of France) rice fields have been established on very young soils developed from historic fluvial deposits of the Rhône River. The comparison of clay mineralogy in a paddy field cultivated for 60 years and in a control shows a significant increase of the clay crystallinity in the paddy field soil, which implies a decrease of their solubility. In the paddy soils, phytoliths, poorly crystallized clays, such as smectite and to a lesser extent kaolinite, are progressively dissolved to supply Si for rice requirements. The sustainability of the crop system requires the clearing of silica exportations.
Abstract: Rice is cultivated as staple for over half of the World’s population. In Camargue (South of France) rice fields have been established on very young soils developed from historic fluvial deposits of the Rhône River. The comparison of clay mineralogy in a paddy field cultivated for 60 years and in a control shows a significant increase of the clay cr...
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Determinants of Small-Scale Irrigation Use: The Case of Boloso Sore District, Wolaita Zone, Southern Ethiopia
Petros Woldemariam,
Yishak Gecho
Issue:
Volume 5, Issue 3, May 2017
Pages:
49-59
Received:
9 February 2017
Accepted:
25 February 2017
Published:
24 April 2017
Abstract: This study was conducted at Boloso Sore district of Southern Ethiopia. The objective of this study was to identify determinants of Small-scale irrigation use. A total of 104 farmers were randomly selected and interviewed by using semi-structured questionnaire. To collect the required data several methods like interview schedule, focus group discussions and key informant interviews were used. Various documents were reviewed to collect the secondary data. Descriptive statistics, inferential statistics (chi-square and independent t-test) and econometric model analysis were used to analyze quantitative data. As the binary logistic regression model result indicates, four variables were found to be significant namely training, land size and labor which had significant and positive effect on the use of irrigation water use at less than 10% probability level, while, distance from the river had significant and negative effect on the use of irrigation water at 5% significant level. Governmental and non-governmental organizations should give emphasis on provision of training to create awareness creation and skill about irrigation technologies and increases their access to use irrigation water in the study area. They also should give emphasis on intensifying agricultural production in order to enhance the productivity of limited land. Therefore, to alleviate these problems and improve small-scale irrigation utilization, woreda (district) agricultural and rural development office and other concerned bodies should attempt to address those factors that hinder small-scale irrigation utilization in the study area.
Abstract: This study was conducted at Boloso Sore district of Southern Ethiopia. The objective of this study was to identify determinants of Small-scale irrigation use. A total of 104 farmers were randomly selected and interviewed by using semi-structured questionnaire. To collect the required data several methods like interview schedule, focus group discuss...
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Physical Land Suitability Evaluation for Irrigation in the Lower Alwero River Area of Abobo, Western Ethiopia
Teshome Yitbarek,
Kibebew Kibret,
Shelem Beyene
Issue:
Volume 5, Issue 3, May 2017
Pages:
60-64
Received:
3 August 2013
Accepted:
10 January 2017
Published:
9 May 2017
Abstract: Land suitability assessment plays an important role in identifying biophysical constraints and evaluating potential capacity of land and its sustainable use. Physical land suitability evaluation for irrigation was carried out in the lower Alwero river area of Abobo, western Ethiopia, following FAO methodology for general irrigation farming. The irrigation suitability of five land mapping units (LMUs): 1Ac, 1Bc, 1Ecl, 2Cc and 3Ccl were assessed by considering slope, drainage, top soil texture, sub soil texture, surface stoniness, surface coarse fragments, subsurface coarse fragment, rockiness, depth to solid rock or hardpan, lime, gypsum, electrical conductivity (EC) and exchangeable sodium percentage (ESP). The result revealed that LMU 1Ac, 1Bc and 2Cc, with total area of 22,367.9 ha (83.7%), were moderately suitable (S2). The moderate limiting factors were drainage, top soil texture and subsoil texture. On the other hand, LMU 1Ec1, covering an area of 3,677.6 ha (13.8%) was not suitable (N) for irrigation due to subsurface coarse fragments and depth to solid rock or hardpan. For all LMUs, parameters like lime, gypsum, EC and ESP were not considered as limiting factors.
Abstract: Land suitability assessment plays an important role in identifying biophysical constraints and evaluating potential capacity of land and its sustainable use. Physical land suitability evaluation for irrigation was carried out in the lower Alwero river area of Abobo, western Ethiopia, following FAO methodology for general irrigation farming. The irr...
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Genetic Processes of Iron and Zinc Accumulation in Edible Portion of Crops and Their Agro-Biofortification: A Review
Jing Liu,
Mingyue Yang,
Hong Li,
Danping Li,
Xiaojun Shi,
Yueqiang Zhang
Issue:
Volume 5, Issue 3, May 2017
Pages:
65-72
Received:
29 January 2017
Accepted:
18 April 2017
Published:
17 May 2017
Abstract: Iron (Fe) and zinc (Zn) are essential micronutrient for both human and plants, but Fe and Zn deficiency is prevalent in the world especially developing countries including India and China. Biofortification is considered the most promising approach to alleviate Fe and Zn malnutrition. Thus this study was mainly conducted to review the recent progresses on the strategies of the processes affecting Fe and Zn accumulation in edible portion of crops at genetic and physiological levels. While agricultural approaches are useful to gain Fe and Zn enriched cereals, therefore agro-biofortification of Fe and Zn by agricultural approaches was also reviewed for possible solution in intensive agriculture system.
Abstract: Iron (Fe) and zinc (Zn) are essential micronutrient for both human and plants, but Fe and Zn deficiency is prevalent in the world especially developing countries including India and China. Biofortification is considered the most promising approach to alleviate Fe and Zn malnutrition. Thus this study was mainly conducted to review the recent progres...
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