river basin Articles
-
Forage Council to Delve Into Cattle Marketing at Meeting
Crow Wing River Basin Forage Council is exploring marketing options for cattle at its annual Winter Meeting from 9 a.m. to 3:30 p.m. Thurs., Feb. 20, at the Commons at Central Lakes College in Staples. The meeting will also have a presentation on farm transitions, a direct marketing panel and a three-part marketing session with experts on branding grass-fed beef, aggregating and auctions. ...
-
Water allocation reform to meet environmental uses while sustaining irrigation: a case study of the Murray–Darling Basin, Australia
Governments are developing policy to reallocate water to environmental uses in many of the world's major river basins developed for irrigation. These policies can place considerable pressure on the irrigation sector to adjust, and may be perceived to conflict with food security and rural development goals. This paper reviews the literature examining opportunities to reduce irrigation ...
-
Assessment of hydraulic fish habitat condition using integrated toolkit: a case study of the Geum river basin, Republic of Korea
Artificial changes of rivers, including construction and operation of dams, inevitably lead to physical and ecological changes throughout waterways and their floodplains. In this study, a conceptual model coupled with integrated numerical modeling is presented for hydraulic fish habitat assessment of the Geum River basin, Republic of Korea. Based on the major events which might have affected the ...
-
Challenges and opportunities for a sustainable rice production in Europe and Mediterranean area
Rice is the second largest cereal crop grown worldwide. One-half of the world population and virtually all of East and Southeast Asia is wholly dependent upon rice. Rice production in the Mediterranean regions dates back to the seventh century. This crop was first introduced into Egypt and gradually spread, towards the fifteenth century, to most countries of the Mediterranean basin. Rice is at ...
-
Impacts of climate change on irrigation water requirements for rice–wheat cultivation in Bagmati River Basin, Nepal
This study highlights the spatial and temporal impacts of climate change on rice–wheat cropping systems, focusing on irrigation water requirement (IWR) in the Bagmati River Basin of Nepal. The outputs from a general circulation model (HadCM3) for two selected scenarios (A2 and B2) of IPCC and for three time periods (2020s, 2050s, and 2080s) have been downscaled and compared to a baseline ...
-
Variation in Adzuki Bean (vigna angularis) germplasm grown in China
Adzuki bean [Vigna angularis (Willd.) Ohwi & Ohashi] is cultivated in a wide range of agroecological environments from north to south China. An understanding of the genetic variation for crop adaptation facilitates plant breeding. A core germplasm of 231 accessions (selected from a representative collection of 3908 Chinese landraces) was evaluated at diverse locations in China in 1998 to (i) ...
-
Agro-ecological compensation of watershed based on emergy
The paper aims at providing a framework to calculate the agro-eco-compensation standard based on the systems agro-ecological concept of embodied energy as emergy. We have proposed a calculation system of eco-compensation standard for sustainable agricultural development based on the convertibility between emergy and price. According to our calculation, the total energy of agricultural ...
-
Quantitative assessment of the impacts of irrigation on surface water fluxes in the Tarim River, China
Irrigation is a significant human activity that affects surface water fluxes in the Tarim River Basin. To quantitatively assess the irrigation impact of this activity on surface water fluxes in the Tarim River, a land surface hydrologic model was coupled with a modified irrigation scheme and a reservoir module and applied to simulate these fluxes. Modeling results indicate that the combined ...
-
Development of an adaptive monitoring framework for long‐term programs: An example using indicators of fish health
Detecting unwanted changes associated with localized human activities in aquatic ecosystems requires defining the value of an indicator expected at a site in the absence of development. Ideally, adequate and comparable baseline data will be collected at an exposure location prior to that development, but this is rarely done. Instead, comparisons are made using various designs to overcome the ...
-
An assessment of farmers' willingness to participate in water trading in southern Spain
This study applies contingent valuation to assess farmers' willingness to trade irrigation water. We analyse farmers' willingness to pay for water and their willingness to accept the selling of water through a seasonal market, under both normal rainfall and drought conditions. A survey of 241 farmers (irrigators and non-irrigators) in the Guadalquivir River Basin and in the ...
-
The role of soil moisture accounting in estimation of soil evaporation and transpiration
In this study, we explore how the differences in soil moisture accounting affect the estimation of actual soil evaporation (E) and transpiration (T). The main objective is, therefore, a comparative assessment of a vapor flux estimation method which has explicit soil moisture accounting, against a vapor flux estimation method that uses satellite observed soil moisture data. Three methods with ...
-
On-line measurements provide more accurate estimates of nutrient loading: a case of the Yläneenjoki river basin, southwest Finland
Automatic on-line measurement stations for water quality components and water level were equipped with dataloggers and GSM transmitters; the stations were installed at two sites in the Yläneenjoki river basin, SW Finland. Measurements during five seasons in 2006–2007 were conducted to find out whether the produced data would provide more accurate estimates of material and nutrient transport than ...
-
Insights from the field: forests for water
In the Neuse River Basin in North Carolina, WRI is working with partners to identify beneficiaries and their water-related dependencies. We learned that clear documentation of the risks that beneficiaries face from water pollution, drought, and watershed degradation will help jump-start their participation in emerging PWS programs. In the Sebago Lake Watershed in Maine, WRI is finalizing a ...
-
Irrigation water pricing policy for water demand and environmental management: a case study in the Weihe River basin
Irrigated agricultural production is the backbone of the Chinese agricultural sector, but the increasing demand for irrigation water, its inefficient utilization and overuse of chemical inputs, accompanied by the short supply of water resources have endangered the nation's agricultural and environmental sustainability. The Chinese government has proposed a water pricing policy with the ...
-
Analysis of genetic structure in widely distributed common bean landraces with different plant growth habits using SSR and AFLP markers
The genetic variation in common bean (Phaseolus vulgaris L.) landraces with different growth habits, which are grown over a wide and environmentally heterogeneous area in southern Italy, was studied to help define strategies for conservation of genetic resources. Accessions of three landraces, a'Marrozzo and Poverella with indeterminate growth habits, and Verdolino with a determinate growth ...
-
Fertility status, trace elements and heavy metal pollution of agricultural land irrigated from the Gediz River
The effect of the Gediz River, polluted by industrial and domestic wastes, on fertility status and trace elements and heavy metal pollution of agricultural land irrigated from this river was investigated. For this purpose, soil samples were collected in August 1998 between the source of the Gediz River (Murat Mountain) and its mouth (Aegean Sea). Soil samples were collected from 12 different ...
-
Estimating water use efficiencies for water management reform in Southern Alberta irrigated agriculture
Water use technical efficiency (WUTE) and three definitions of water use economic efficiency (WUEE) were estimated for the four river sub-basins that encompass the 13 irrigation districts in Southern Alberta over a 5-year period: 2004–08. The average level of WUTE varied from 3.5 to 6.2 Mt dam−3. The gross economic value of crop production varied from Canadian (C)$345 to ...
-
Risk analysis of pesticides applied to rice paddies using RICEWQ 1.6.2v and RIVWQ 2.02
Rice is commonly cultivated in Southern Europe in large river basins where the extensive use of herbicides may impactwater quality at basin scale level. Consequently, pesticide risk assessmentwould be more relevant when considering a rice cultivation area as awhole. Accordingly, two watershed-scale scenarios were developed to represent the specific agronomic, water and pesticide management ...
-
Transition of fertilizer application and agricultural pollution loads: a case study in the Nhue-Day River basin
Rapid socio-economic development in suburban areas of developing countries has induced changes in agricultural waste and nutrient management, resulting in water pollution. The study aimed at estimating agricultural nutrient cycles and their contribution to the water environment. A material flow model of nitrogen (N) and phosphorus (P) was developed focusing on agricultural activities from ...
-
Transition of fertilizer application and agricultural pollution loads: a case study in the Nhue-Day River basin
Rapid socio-economic development in suburban areas of developing countries has induced changes in agricultural waste and nutrient management, resulting in water pollution. The study aimed at estimating agricultural nutrient cycles and their contribution to the water environment. A material flow model of nitrogen (N) and phosphorus (P) was developed focusing on agricultural activities from ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you