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Recent snow cover variation in the Upper Indus Basin of Gilgit Baltistan, Hindukush Karakoram Himalaya

Journal of Mountain Science 2019年第2期16卷 296-308页

作者： Hazrat BILAL chamhuri siwar MAZLIN Bin Mokhtar KASTURI Devi Kanniah Institute for Environment and Development (LESTARI) Universiti Kebangsaan Malaysia The National University of Malaysia (UKM) Centre for Environmental Sustainability and Water Security (IPASA) Research Institute for Sustainable Environment (RISE) Faculty of Geoinformation and Real Estate University Technology Malaysia (UTM)

Mountainous basins like the Upper Indus Basin(UIB) of Gilgit Baltistan(GB) are dependent on seasonal snowmelt and glacier melt. Monitoring of the snow-covered area(SCA) is not only vital for the overall hydrology of the Indus basin but also important to the sustainable agriculture and hydropower system. The snow-covered area in the UIB of GB was investigated for changes over the last 18 years using the Moderate Resolution Imaging Spectroradiometer(MODIS) snow product. The study area was divided into five elevation zones ranging from 877-8564 meters above sea level(m ASL). In contrast to the global cryosphere related studies, SCA in the UIB is slightly increasing. Elevation based SCA analysis also indicated that SCA is slightly increasing in each elevation zone. However, a significant amount of snow is concentrated in areas above 5000 m ASL. Due to the strong correlation between SCA and precipitation, the precipitation data also follow a similar trend. Analysis of the climatic data suggests a statistically significant increase in total monthly precipitation and relative humidity, a slight decrease in mean monthly temperature and a significant upward tendency in monthly solar irradiance data. All these trends in combination with the increasing trend in global precipitation, winter westerly disturbances and orographic precipitation are the important factors behind the slightly increasing SCA in the study area. Our results though constrained by short observation period mainly contribute to the understanding of advancing snow cover and glaciers in Hindukush Karakoram.

关键词： Snow MODIS Westerly disturbances Climate change Upper Indus Basin Glaciers

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Climatic change and the socioeconomic sustainability of the paddy farmers in Malaysia

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Natural Science 2013年第1期5卷 163-166页

作者： Mahmudul Alam chamhuri siwar Basri Talib Abdul Hamid Jaafar Faculty of Economics and Management National University of Malaysia (UKM) Bangi Malaysia Institute for Environment and Development (LESTARI) National University of Malaysia (UKM) Bangi Malaysia

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.

关键词： Climatic Change Income Equality Health Hazard Agriculture Paddy Malaysia

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Water productivity for living aquatic resources in floodplains of Northwestern Bangladesh

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Journal of Coastal Life Medicine 2014年第4期 324-331页

作者： Md.Istiaque Hossain Md.Mahmudul Alam chamhuri siwar Madan Mohan Dey Mazlin Mokhtar Abdul Hamid Jaafar Md.Yeamin Hossain Department of Fisheries Faculty of AgricultureUniversity of RajshahiBangladesh Institute for Environment and Development(LESTARI) Universiti Kebangsaan Malaysia(UKM)43600 UKM BangiSelangorMalaysia Aquaculture Economics and Marketing Aquaculture/Fisheries CenterUniversity of Arkansas Pine BluffUSA School of Economics Universiti Kebangsaan Malaysia 43600 SelangorMalaysia

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 ***:Among two beels,beel Mail is practicing community based fish culture management,and beel Chandpur is open access and improperly *** production and market price data of fish,snail,and aquatic plants were collected by direct observation based on 30 samples fishers in the year *** study also collected production related water quality data,such as water temperature,pH and dissolved ***:The water quality data are found within the normal *** 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,*** 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 *** water productivity values in beel Mail are higher than in beel Chandpur due to the intervention of community based fish ***: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,*** help to improve the productivity of water in the beel areas.

关键词： Bangladesh Community based-management Floodplain Water productivity

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