The changing nature of climatic factors has different impacts on agriculture based areas, periods and crops. Farmers are the most vulnerable group who are affected both directly and indirectly through climatic changes...The changing nature of climatic factors has different impacts on agriculture based areas, periods and crops. Farmers are the most vulnerable group who are affected both directly and indirectly through climatic changes. In the study area in Malaysia, climatic changes have adverse impacts on farmers. Due to climatic change, productivity and profitability of paddy cultivation have declined in the Integrated Agricultural Development Area, North-West Selangor. Farmers perceive that paddy cultivation is no longer profitable due to low productivity as a result of climatic changes. They now prefer full-time to part-time engagement in paddy cultivation. Heavy government subsidy and encouragement are not enough;it requires increase in productivity and profitability of paddy cultivation for making it a viable and sustainable sector. All efforts of mitigation and adaptation must be pursued to counter the adverse impacts of climatic changes and increase the productivity of paddy cultivation in the area. It is observed that there is a high degree of income inequality among the paddy farmers in the study area.展开更多
Objective:To measure the productivity of water on the floodplain land in terms of fisheries and living aquatic resources based on two floodplain beels in Bangladesh.Methods:Among two beels,beel Mail is practicing comm...Objective:To measure the productivity of water on the floodplain land in terms of fisheries and living aquatic resources based on two floodplain beels in Bangladesh.Methods:Among two beels,beel Mail is practicing community based fish culture management,and beel Chandpur is open access and improperly managed.The production and market price data of fish,snail,and aquatic plants were collected by direct observation based on 30 samples fishers in the year 2006-2007.This study also collected production related water quality data,such as water temperature,pH and dissolved oxygen.Results:The water quality data are found within the normal range.Net aggregated water productivity values based on production costs were TK 8016.23 ha^(-1)and TK 3912.9 ha^(-1)and based on all cost TK 7160.97 ha^(-1)and TK 3741.13 ha^(-1)at beel Mail and beel Chandpur,respectively.The contribution of fish,snails and aquatic resources were 96.50%,3.10%,and 0.40%of the gross aggregated water produced in beel Mail and 87.85%,8.38%,and 3.77%in the beel Chandpur.The water productivity values in beel Mail are higher than in beel Chandpur due to the intervention of community based fish culture.Conclusions:The proper management and techniques of harvesting fish through appropriate number of fish fingerlings stocked,good quality of fish fingerlings,size of beel,good fencing and well defined embankment,etc.can help to improve the productivity of water in the beel areas.展开更多
文摘The changing nature of climatic factors has different impacts on agriculture based areas, periods and crops. Farmers are the most vulnerable group who are affected both directly and indirectly through climatic changes. In the study area in Malaysia, climatic changes have adverse impacts on farmers. Due to climatic change, productivity and profitability of paddy cultivation have declined in the Integrated Agricultural Development Area, North-West Selangor. Farmers perceive that paddy cultivation is no longer profitable due to low productivity as a result of climatic changes. They now prefer full-time to part-time engagement in paddy cultivation. Heavy government subsidy and encouragement are not enough;it requires increase in productivity and profitability of paddy cultivation for making it a viable and sustainable sector. All efforts of mitigation and adaptation must be pursued to counter the adverse impacts of climatic changes and increase the productivity of paddy cultivation in the area. It is observed that there is a high degree of income inequality among the paddy farmers in the study area.
基金Supported by the World Fish Center,and Malaysian Commonwealth Scholarship(MCS),Ministry of Higher Education,Malaysia.
文摘Objective:To measure the productivity of water on the floodplain land in terms of fisheries and living aquatic resources based on two floodplain beels in Bangladesh.Methods:Among two beels,beel Mail is practicing community based fish culture management,and beel Chandpur is open access and improperly managed.The production and market price data of fish,snail,and aquatic plants were collected by direct observation based on 30 samples fishers in the year 2006-2007.This study also collected production related water quality data,such as water temperature,pH and dissolved oxygen.Results:The water quality data are found within the normal range.Net aggregated water productivity values based on production costs were TK 8016.23 ha^(-1)and TK 3912.9 ha^(-1)and based on all cost TK 7160.97 ha^(-1)and TK 3741.13 ha^(-1)at beel Mail and beel Chandpur,respectively.The contribution of fish,snails and aquatic resources were 96.50%,3.10%,and 0.40%of the gross aggregated water produced in beel Mail and 87.85%,8.38%,and 3.77%in the beel Chandpur.The water productivity values in beel Mail are higher than in beel Chandpur due to the intervention of community based fish culture.Conclusions:The proper management and techniques of harvesting fish through appropriate number of fish fingerlings stocked,good quality of fish fingerlings,size of beel,good fencing and well defined embankment,etc.can help to improve the productivity of water in the beel areas.
