A Study on Water Logging Problem of Rangpur City

Irrational use and management of water and land are associated with poor hydro-geological conditions causing water logging and salinization problems, possibly leading to farmland abandonment and economic loss. This poses a great challenge to the sustainability of oasis’ and requires desalinization through reasonable landscape design by multiple crossing studies so we collected traditional knowledge by field interviews and literature schemes, except for the modern desalinization approaches by literature, and we found that the salinization problem has been solved by traditional land reclamation, traditional drainage, natural drainage and flood irrigation, locally. It is worth mentioning that the traditional reclamation in salinized areas requires flood water, sand dunes and a salinized pit area; the sand dunes are used to elevate the pit surface, and water is used to leach salt from the soil. Natural drainage (the depth and width are 4–10 m and 50–100 m, respectively) caused by flash flooding has significant benefits to some salinized villages in the range of 3000–5000 m and ancient groundwater drainage systems, such as Karez are supporting the oasis with drainage water for centuries. In addition landscape characteristics, salinization and hydro-geological conditions of the oasis were studied from Landsat image, DEM, literature and field photos. Then based on the gathered information above, a desalinization model was developed to decrease the groundwater table and salt leaching in the water logging landscape. Then according to landscape characteristics, different desalinization approaches were recommended for different landscapes. To address environmental uncertainties, an adaptive landscape management and refinement approach was developed, and acceptance of the model was validated by stakeholder opinion. The results provide guidelines for sustainable desalinization design and highlight the importance of combining traditional knowledge and modern ecological principles in sustainable landscape design.

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An Emergency Decision-Making Method for Urban Rainstorm Water-Logging: A China Study

Sustainability ◽

10.3390/su10103453 ◽

2018 ◽

Vol 10 (10) ◽

pp. 3453 ◽

Cited By ~ 3

Author(s):

Jiyong Ding ◽

Juefang Cai ◽

Guangxiang Guo ◽

Chen Chen

Keyword(s):

Decision Making ◽

Bayesian Analysis ◽

Emergency Management ◽

Utility Theory ◽

Urban Traffic ◽

Economic Losses ◽

Water Logging ◽

Multi Attribute Utility Theory ◽

Emergency Decision Making ◽

Emergency Decision

With the rapid development of the urbanization process, rainstorm water-logging events occur more frequently in big cities in China, which causes great impact on urban traffic safety and brings about severe economic losses. Water-logging has become a hot issue of widespread concern in China. As one kind of natural disasters and emergencies, rainstorm water-logging has the uncertainties of occurrence, development, and evolution. Thus, the emergency decision-making in rainstorm water-logging should be carried out in stages according to its development trend, which is very complicated. In this paper, an emergency decision-making method was proposed for urban water-logging with a hybrid use of dynamic network game technology, Bayesian analysis, and multi-attribute utility theory. The dynamic game process between “rainstorm water-logging” and “decision-making group” was established and the dynamic generation of emergency schemes was analyzed based on Bayesian analysis in various stages of water-logging. In terms of decision-making attributes, this paper mainly considered two goals, i.e., ensuring smooth traffic and controlling emergency cost. The multi-attribute utility theory was used to select the final scheme. An example analysis in Guangzhou of China showed that the method is more targeted and can achieve emergency management objectives more effectively when compared with traditional methods. Therefore, it can provide reference for the scientific decision-making of emergency management in urban rainstorm water-logging.

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Children's Health Deficits due to Diarrhoea: Effects of Water Supply and Sanitation Systems in Slums with Different Water Logging Conditions

Journal of Water and Environment Technology ◽

10.2965/jwet.2009.277 ◽

2009 ◽

Vol 7 (4) ◽

pp. 277-291 ◽

Cited By ~ 3

Author(s):

Kabirul Ahsan MOLLAH ◽

Kei NISHIDA ◽

Naoki KONDO ◽

Zentaro YAMAGATA

Keyword(s):

Water Supply ◽

Children's Health ◽

Children’S Health ◽

Water Logging ◽

Sanitation Systems ◽

Water Supply And Sanitation

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Impacts of conservation tillage on the hydrological and agronomic performance of <i>Fanya juus</i> in the upper Blue Nile (Abbay) river basin

Hydrology and Earth System Sciences ◽

10.5194/hess-16-4725-2012 ◽

2012 ◽

Vol 16 (12) ◽

pp. 4725-4735 ◽

Cited By ~ 34

Author(s):

M. Temesgen ◽

S. Uhlenbrook ◽

B. Simane ◽

P. van der Zaag ◽

Y. Mohamed ◽

...

Keyword(s):

River Basin ◽

Crop Yield ◽

Surface Runoff ◽

Conservation Tillage ◽

Eragrostis Tef ◽

Yield Reduction ◽

Runoff Water ◽

Blue Nile ◽

High Rainfall ◽

Water Logging

Abstract. Adoption of soil conservation structures (SCS) has been low in high rainfall areas of Ethiopia mainly due to crop yield reduction, increased soil erosion following breaching of SCS, incompatibility with the tradition of cross plowing and water-logging behind SCS. A new type of conservation tillage (CT) involving contour plowing and the construction of invisible subsoil barriers using a modified Maresha winged "subsoiler" is suggested as a means to tackle these problems as an integral part of the SCS. We investigated the effect of integrating the CT with SCS on the surface runoff, water-logging, soil loss, crop yield and plowing convenience. The new approach of conservation tillage has been compared with traditional tillage (TT) on 5 farmers' fields in a high rainfall area in the upper Blue Nile (Abbay) river basin. Test crops were wheat [triticum vulgare] and tef [eragrostis tef]. Farmers found CT convenient to apply between SCS. Surface runoff appeared to be reduced under CT by 48 and 15%, for wheat and tef, respectively. As a result, CT reduced sediment yield by 51 and 9.5%, for wheat and tef, respectively. Significantly reduced water-logging was observed behind SCS in CT compared to TT. Grain yields of wheat and tef increased by 35 and 10%, respectively, although the differences were not statistically significant apparently due to high fertility variations among fields of participating farmers. Farmers who tested CT indicated that they will continue this practice in the future.

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SENSIBILIDADE DE PLANTAS DE SOJA AO REBAIXAMENTO DO NÍVEL FREÁTICO

Irriga ◽

10.15809/irriga.2005v10n2p135-145 ◽

2005 ◽

Vol 10 (2) ◽

pp. 135-145

Author(s):

Jocelito Saccol de Sá ◽

Décio Eugênio Cruciani ◽

Sérgio Nascimento Duarte ◽

José Roberto Brito Pereira

Keyword(s):

Soil Water ◽

Water Table ◽

Sao Paulo ◽

Additional Treatment ◽

Statistical Experimental Design ◽

São Paulo ◽

Level Control ◽

Drainage Rate ◽

Water Logging ◽

Soybean Plants

SENSIBILIDADE DE PLANTAS DE SOJA AO REBAIXAMENTO DO NÍVEL FREÁTICO Jocelito Saccol de Sá; Décio Eugênio Cruciani; Sérgio Nascimento Duarte; José Roberto Brito PereiraDepartamento de Engenharia Rural, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Piracicaba - SP, [email protected]. 1. RESUMO A diversificação de culturas em terras baixas é de grande interesse em diversas regiões produtoras de arroz, no Brasil e no exterior. O cultivo de soja é uma opção economicamente viável para a ocupação dessas áreas em rotação e/ou em sucessão à orizicultura. Este trabalho foi realizado em casa de vegetação localizada em uma área experimental da ESALQ/USP, Piracicaba – SP, com o objetivo de avaliar os efeitos de rebaixamentos sucessivos do nível freático (NF) no desenvolvimento e na produtividade de plantas de soja, cv. BR-16, e identificar o estádio de desenvolvimento da cultura com maior sensibilidade à inundação do solo. O delineamento utilizado foi o inteiramente casualizado, em arranjo fatorial (2x5) com um tratamento adicional (testemunha), sendo os fatores estudados: período de desenvolvimento da cultura durante a inundação do solo (estádios V8 e R4) e rebaixamento do NF (10, 20, 30, 40 e 60 cm dia-1). As plantas de soja apresentaram maior suscetibilidade à inundação do solo durante o período vegetativo. As taxas de rebaixamento do NF influenciaram o desenvolvimento e a produtividade dessa cultura. O aumento da velocidade de drenagem reduziu os danos ocasionados às plantas pelo excesso de água no solo, principalmente no estádio menos tolerante a essa condição. UNITERMOS: inundação, coeficiente de drenagem. SÁ, J. S.; CRUCIANI, D. E.; DUARTE, S. N. E PEREIRA, J. R. B. SENSITIVITY OF SOYBEAN PLANTS TO WATER TABLE DRAWDOWN 2 ABSTRACT Agricultural diversification in low lands is very important in several Brazilian regions and countries, especially in irrigated rice lands. Soybean is a viable economic option for low lands. This study was carried out in an experimental area at ESALQ/USP, Piracicaba, São Paulo – Brazil. The objectives were to estimate the effects of water table drawdown in the growth and crop yield of soybean cv. BR-16 and to identify the most sensitive crop stages to soil water logging. The statistical experimental design was a completely randomized one with factorial arrangement (2x5) one additional treatment (control) and four replications. The study was done in the V8 e R4 crop stages. The water table was lowered 10, 20, 30, 40 and 60cm per day, from initial level. Control plants where only irrigated without flooding. The soybean plants showed highest susceptibility to soil water logging in the vegetative stage. The water table drawdown rates influenced the development and productivity of soybean plants. The drainage rate increase reduced the damage caused to the plants by the water excess in the soil, mainly in the less tolerant stage. KEYWORDS: flooding, drainage coefficient.

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