Women's Awareness of and Attitudes Towards the Flood Action Plan (FAP) of Bangladesh: A Comparative Study

/ Bangladesh has recently tested a program called the Flood Action Plan (FAP) to solve its chronic flood problem. The FAP envisages that all the major rivers of Bangladesh will eventually be embanked on both sides in order to prevent flooding. This paper reports on the responses of rural women to the possible impacts of the proposed embankment projects as outlined in the FAP. A further attempt is also made to compare their responses with the results of an earlier survey conducted among male respondents. Data for this study were collected from two rural areas of Bangladesh. It shows that almost all respondents had heard about the proposed construction and that they overwhelmingly support the embankment project of the FAP. Respondents are also aware of both positive and negative impacts of embankment construction. Similar findings were also reported by a previous study dealing with male responses to the embankment project. KEY WORDS: Flood Action Plan; Bangladesh; Women     

Diversion of the Ganges Water at Farakka and Its Effects on Salinity in Bangladesh

/ The Ganges River supplies water to the southwest region of Bangladesh mainly through one of its distributaries-the Gorai River. India commissioned a barrage on the Ganges River at Farakka in April 1975 to divert water and make the Bhagirathi-Hooghly River navigable. The diversion has reduced the dry season discharge of the Ganges and Gorai rivers in Bangladesh. Statistical analyses indicate that the changes in the dry season discharge of these rivers are significant. Reduced discharge in the Gorai River has induced accelerated sedimentation and increased salinity in the southwest region of Bangladesh. Empirical analyses demonstrate the relationship between discharge in the Gorai River and salinity. Analyses also determine the requirement of flow for the Ganges and Gorai rivers to keep salinity at threshold limits. Increased salinity has caused negative effects on agriculture, forestry, industry, and drinking water in the southwest region of Bangladesh.KEY WORDS: Bangladesh; Ganges River; Gorai River; Farakka diversion; Salinity     

Toward an Integrated Management Plan of the Djoudj Park Water Resources: Senegal River Mouth

A new approach was needed to preserve the biodiversity of the Djoudj Park within a context marked by many constraints: drought, regulation of its hydrologic system, and anthropogenic pressure. The local management plan developed in this paper aims at the responsible management and fair distribution of the available water resources in the Djoudj Park to provide a balanced response to conservation issues and the growing needs of the local communities. The opposition between an administration determined to exercise its power and the confidence of local people weary of being stripped of their rights and cultural assets required the setting up of a consensual management plan. This plan would provide a means to determine the timing and the number of sluice gates to operate, based on an efficient command of the needs for water for each activity in the park and its surroundings. This tool will allow the park authority to take full cognizance of the needs and opinions of all interest groups but also their limits while keeping the essential functions of this wetland. It is also suggested that institutional and administrative reform be carried out to associate local populations in the definition and implementation of criteria for an integrated management of the Djoudj resources.     

PROFILE: Hungry Water: Effects of Dams and Gravel Mining on River Channels

/ Rivers transport sediment from eroding uplands to depositional areas near sea level. If the continuity of sediment transport is interrupted by dams or removal of sediment from the channel by gravel mining, the flow may become sediment-starved (hungry water) and prone to erode the channel bed and banks, producing channel incision (downcutting), coarsening of bed material, and loss of spawning gravels for salmon and trout (as smaller gravels are transported without replacement from upstream). Gravel is artificially added to the River Rhine to prevent further incision and to many other rivers in attempts to restore spawning habitat. It is possible to pass incoming sediment through some small reservoirs, thereby maintaining the continuity of sediment transport through the system. Damming and mining have reduced sediment delivery from rivers to many coastal areas, leading to accelerated beach erosion. Sand and gravel are mined for construction aggregate from river channel and floodplains. In-channel mining commonly causes incision, which may propagate up- and downstream of the mine, undermining bridges, inducing channel instability, and lowering alluvial water tables. Floodplain gravel pits have the potential to become wildlife habitat upon reclamation, but may be captured by the active channel and thereby become instream pits. Management of sand and gravel in rivers must be done on a regional basis, restoring the continuity of sediment transport where possible and encouraging alternatives to river-derived aggregate sources.KEY WORDS: Dams; Aquatic habitat; Sediment transport; Erosion; Sedimentation; Gravel mining     

Pond management in rural Bangladesh: problems and possibilities in the context of the water supply crisis

Today, Bangladesh is confronted with an immense water supply crisis: the decline of surface water bodies as well as a fall in the water table, together with the multiple pollution of the water in general, has put pressure on a precious resource that needs to meet the demand of a growing population. However, the most serious problem became public just four years ago—the contamination of the groundwater with arsenic. Considering the extent of the water supply problem, solutions for the future provision of safe drinking water are urgently needed. This article argues that ponds, a traditional water source in Bangladesh, could contribute to a solution. However, it is essential to recognise the problems and advantages of ponds in order to make suggestions on how to integrate ponds into the national water policy. Therefore, this paper analyses pond management—the use, maintenance and control of ponds—and its change from the past to the present. A holistic, dynamic and actor-oriented approach on a small scale was proved to be the appropriate instrument for this analysis.     

An ecosystem approach to analyse the livelihood of fishers of the Old Brahmaputra River in Mymensingh region,Bangladesh

This paper applies an ecosystem approach to analyse the livelihood of fishers dependent on the Old Brahmaputra River in Mymensingh, Bangladesh. Results suggest that the livelihood of fishers is increasingly threatened because of the fragile river ecosystem and poor livelihood assets. Most fishers face a wide range of vulnerability including shocks, trends and seasonality. This is because the ecosystem of the resource base on which their livelihood depends (i.e. the Old Brahmaputra River) has been degraded severely resulting in a significant decline in fish catch due to a combination of factors, such as over-fishing, use of destructive fishing gears, water pollution, siltation, rapid urbanisation and environmental degradation. We propose an adoption of the socio-ecological system with active community participation in the management of the resource base and collaboration amongst key stakeholders to produce positive livelihood outcomes for the fishers.     

Environmental Planning, Biodiversity and the Development Process: The Case of Hong Kong''s Chinese White Dolphins

Hong Kong has enjoyed more than 20 years of almost uninterrupted economic growth and the territory is widely recognized as one of the most successful of the newly industrializing economies. Economic success has, however, brought with it a variety of environmental problems including deterioration of air and water bodies and the loss of terrestrial and marine habitats. Environmental degradation also poses a serious threat to local biodiversity. Despite its stated commitment to environmental protection, the Hong Kong Government is still strongly growth-oriented and the territory's environmental institutions and policies often seem ineffective in resolving the conflicts that arise between development and the environment. To illustrate some of the contradictions inherent in Hong Kong's current approach to environmental and conservation issues, this paper focuses on the controversy surrounding the fate of the local population of the Indo-Pacific humped-back dolphin, or, as it is locally known, the Chinese white dolphin (Sousa chinensis). The dolphin's habitat has been disrupted by major development projects, marine pollution and fishing and shipping activity. It is possible that the species will be extinct in Hong Kong waters by the beginning of the next century. The paper examines the background to the controversy that has arisen surrounding the future of the dolphins and evaluates the Government's attempts to develop a conservation strategy to protect them. The preferred option—the creation of a dolphin sanctuary within a designated marine park area—has been strongly criticized by some local marine biologists and conservationists as being inadequate and inappropriate. The failure to address effectively the problems faced by the Chinese white dolphin may be attributed to the lack of an overall conservation strategy in Hong Kong, shortcomings in the territory's environmental impact assessment system and limited local scientific knowledge concerning the dolphin population.     

Conservation and management of the Bangladesh coastal ecosystem: Overview of an integrated approach

Although the coastal ecosystem of Bangladesh contains a highly functional and structurally diverse ecology, this ecology is gradually being degraded. As a consequence, the quality of life of a large section of the coastal community is in economic decline. This poses a daunting challenge to the sectoral coastal management programmes, active since the 1960s, aiming at simultaneously ameliorating people's livelihood and supporting the ecosystem. These programmes have been reasonably successful in managing the ecosystem, but in many cases, the situation has become worse. The limitations of these programmes include the tendency to adopt an exclusionist approach, a narrowly departmentalized administration and weak management. Currently, the integrated coastal zone management (ICZM) approach is espoused as the main strategy. With the adoption of Bangladesh's Coastal Zone Policy of 2005, the foundation for integrated management was laid. The next realistic target will be to bring about changes in culture and mandate among coastal institutions in favour of integrated management.     

Rice versus fish revisited: On the integrated management of floodplain resources in Bangladesh

Disproportionately little attention has been paid to the dry season trade‐off between rice and (inland capture) fish production on the floodplains of Bangladesh, compared to the same trade‐off during the flood season. As the rural economy grows increasingly dominated by dry‐season irrigated rice production, and floodplain land and water come under ever‐increasing pressure during the dry winter months, there is an urgent need to focus attention on these dry months that are so critical to the survival and propagation of the floodplain resident fish, and to the poor people that depend on these fish for their livelihood. This article examines three important dry‐season natural resource constraints to floodplain livelihoods in Bangladesh, and finds a common factor at the heart of all three: rice cultivation on lands at low and very low elevations. The article articulates the system interlinkages that bind these constraints and the long‐run trend towards irrigated rice cropping on lower‐lying lands, and suggests a management approach based on locally tailored strategies to arrest this trend. Apart from its direct relevance to the floodplains of Bangladesh, which support more than 100 million people, these lessons have relevance for river floodplain systems elsewhere in the developing world, notably the Mekong Delta.     

Reconciling Environmental and Flood Control Goals on an Arid-Zone River: Case Study of the Limitrophe Region of the Lower Colorado River in the United States and Mexico

Arid zone rivers have highly variable flow rates, and flood control projects are needed to protect adjacent property from flood damage. On the other hand, riparian corridors provide important wildlife habitat, especially for birds, and riparian vegetation is adapted to the natural variability in flows on these rivers. While environmental and flood control goals might appear to be at odds, we show that both goals can be accommodated in the Limitrophe Region (the shared border between the United States and Mexico) on the Lower Colorado River. In 1999, the International Boundary and Water Commission proposed a routine maintenance project to clear vegetation and create a pilot channel within the Limitrophe Region to improve flow capacity and delineate the border. In 2000, however, Minute 306 to the international water treaty was adopted, which calls for consideration of environmental effects of IBWC actions. We conducted vegetation and bird surveys within the Limitrophe and found that this river segment is unusually rich in native cottonwood and willow trees, marsh habitat, and resident and migratory birds compared to flow-regulated segments of river. A flood-frequency analysis showed that the existing levee system can easily contain a 100 year flood even if vegetation is not removed, and the existing braided channel system has greater carrying capacity than the proposed pilot channel.     

Sedimentary Causes and Management of Two Principal Environmental Problems in the Lower Yellow River

Flood and water shortage are two of the leading environmental problems around the world, and among the causes of the problems is sedimentation. The Yellow River brought disastrous floods in its lower reaches in Chinese history. Today, although floods caused by the river are still a formidable hazard hanging over China, it cannot provide the lower reaches with enough usable water. The ineradicable flood hazard and newly emerged water shortage problems of the river are proved to be closely associated with its immense sediment load. The over loaded flow of the river can quickly fill the reservoirs and unceasingly raise the riverbed, attenuating the capacity of reservoirs to suppress floods and provide more water for dry seasons and of river channels to convey floods. Also, the high sediment content pollutes the water and reduces the volume of usable water. In virtue of the intimate linkage between these problems and the formidable sediment load in the river, the solution to these problems should be based on sedimentation management. After reviewing the defects and merits of management measures implemented and proposed, a management scenario composed of multiple measures are recommended. Beside of persistent soil conservation to reduce the huge sediment load, more reservoirs to check sediment and regulate river flows, approaches to alleviating riverbed accretion, interbasin water transfer to mitigate water deficiency, and so on, an emphasis should be laid on use of muddy flows in order to scatter the sediment in a vast area, which was a natural process but has been interrupted by construction of embankments.     

浅谈开发建设项目水土保持方案的编制

依据有关水土保持法律法规和技术规范,简明阐述了开发建设项目水土保持方案编制的有关规定和水土保持方案的主要工作内容,旨在宣传水保法规、推动我区水土保持,尤其是开发建设项目水土保持方案工作,为提高社会各界水土保持意识提供信息     

Ten Key Questions About the Management of Water in the Yellow River Basin

Water is scarce in many regions of the world, clean water is difficult to find in most developing countries, there are conflicts between irrigation needs and urban demands, and there is wide debate over appropriate means of resolving these problems. Similarly, in China, there is limited understanding of the ways in which people, groups, and institutions contribute to, are affected by, and respond to changes in water quantity and quality. We use the example of the Yellow River basin to argue that these social, managerial, and policy dimensions of the present water problems are significant and overshadow the physical ones. Despite this, they receive relatively little attention in the research agenda, particularly of the lead agencies in the management of the Yellow River basin. To this end, we ask ten research questions needed to address the policy needs of water management in the basin, split into two groups of five. The first five relate to the importance of water in this basin and the changes that have affected water problems and will continue to do so. The second five questions represent an attempt to explore possible solutions to these problems.     

A Water Quality Index Applied to an International Shared River Basin: The Case of the Douro River

A Water Quality Index (WQI) is a numeric expression used to evaluate the quality of a given water body and to be easily understood by managers. In this study, a modified nine-parameter Scottish WQI was used to assess the monthly water quality of the Douro River during a 10-year period (1992–2001), scaled from zero (lowest) to 100% (highest). The 98,000 km² of the Douro River international watershed is the largest in the Iberian Peninsula, split between upstream Spain (80%) and downstream Portugal (20%). Three locations were surveyed: at the Portuguese–Spanish border, 350 km from the river mouth; 180 km from the mouth, where the river becomes exclusively Portuguese; and 21 km from the mouth. The water received by Portugal from Spain showed the poorest quality (WQI 47.3 ± 0.7%); quality increased steadily downstream, up to 61.7 ± 0.7%. In general, the water quality at all three sites was medium to poor. Seasonally, water quality decreased from winter to summer, but no statistical relationship between quality and discharge rate could be established. Depending on the location, different parameters were responsible for the episodic decline of quality: high conductivity and low oxygen content in the uppermost reservoir, and fecal coliform contamination downstream. This study shows the need to enforce the existing international bilateral agreements and to implement the European Water Quality Directive in order to improve the water quantity and quality received by the downstream country of a shared watershed, especially because two million inhabitants use the water from the last river location as their only source of drinking water.     

滇池流域水资源的开发与保护

本文介绍了滇池流域的自然条件和社会经济发展,分析了水资源特点,对其开发现状和供需预测作了评述,并提出了进一步开发和保护水资源的建议。     

开发右江河谷的芒果资源

芒果称为“热带果王”，百色右江河谷芒果资源丰富。文章分析了右江河谷的生态环境、开发利用芒果的有利条件、效益评价、发展前景预测，以及开发利用的措施。     

南水北调中线工程对汉江中游襄阳段水文情势的影响

本文根据汉江中游典型断面——襄阳水文站1968～1998年水文情势资料,分析和说明南水北调一期工程后丹江口水库下游区襄樊段水文情势变化及原因,并结合近期（2010年水平年）推荐从丹江口水库调水95亿m^3的方案,预测南水北调中线二期工程的运营对供水区-汉江水文情势的影响,为科学地分析和正确评价南水北调中线工程的近期运营对汉江襄樊段乃至汉江中下游地区生态环境影响和采取合理的生态补偿措施提供可靠的依据.     

清江流域国土资源与可持续发展初探

国土资源是社会发展的基础要素 ,合理开发和高效利用国土资源是区域持续发展的根本保证。从清江流域的国土资源出发 ,分析了清江流域优越的水能资源、丰富的旅游资源、独特的气候资源、种类繁多的生物资源与矿产资源等区域持续发展的基础和优势。另一方面 ,清江流域脆弱的生态环境、频繁的自然灾害和落后的经济等在一定条件下限制着本区域的可持续发展。在综合分析的基础上 ,初步提出了清江流域在农业资源、水资源、旅游资源及人力资源开发、灾害治理方面的建议和对策 ,以期实现本区域社会经济的可持续发展。