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Yang P.,Xinjiang Agricultural University | Dong X.,Xinjiang Water Resources Bureau | Liu L.,Xinjiang Agricultural University | Yang X.,Xinjiang Agricultural University | Zhang Y.,Xinjiang Agricultural University
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering

Drip irrigation under plastic film had applied for more than 1.6 × 106 hm2 in Xinjiang, and the area was still increasing. In order to research soil salt movement of drip irrigation under plastic film in arid area, a series of tests had been carried out on mulched drip irrigation in Korla prefecture, located in the south of Xinjiang. According to the experimentations, some characteristics of drip irrigation under plastic film were discovered. After one times drip irrigation, the salt content of soil profile redistributed again and desalted zone, salt immovability zone and salt accumulation zone were formed. The results of calculation showed that the area of desalted zone were bigger than that of salt accumulation zone. Salt mainly accumulated under 40 cm layer or open filed area. Between depths of 0-40 cm, the effects of salt distribution by using double drip pipe were bigger than by using single drip pipe. Between depths of 0-80 cm, the effects of salt distribution by using single pipe were bigger than by using single double pipe. In the period of cottons growth, the profile salt content showed the trends of decrease under the action of periodic drip irrigation. And, a helpful micro-environment to cottons was formed. Thus, the drip irrigation under plastic film was not only a kind of accurate irrigation, but also could regulate soil salt on shallow profile under the field scale in crop growth and development period. This new approach could provide technical support for saving water and decreasing salt in arid area. Source

Deng M.-J.,Xinjiang Water Resources Bureau | Wang Z.-J.,Xinjiang Hydrology and Water Resources Bureau | Wang J.-Y.,Xinjiang Hydrology and Water Resources Bureau
Shuili Xuebao/Journal of Hydraulic Engineering

To explore the Balkhash Lake water level variation and environmental degradation of the Ili River Delta over the past one hundred years, this paper analyzed the observation data in four hydrological stations named Kayiergan, 171km at the upper reaches of Ukapchaga, Ukapchaga and Unshzharm on the Ili River, especially the variation of runoffs before and after the construction of Ukapchaga Reservoir. It showed that the variation of the Balkhash Lake water level was mainly caused by cyclic hydrologic variation of the Basin and the construction of Ukapchaga Reservoir. According to the recent water level variations observed, ecological disaster does not occur yet due to the increasing runoff in the past 20 years. The construction of Ukapchaga Reservoir and excess utilization of water resources in the mid-low reaches of the Ili River significantly affect the water quantity flowing into the Lake and its runoff process resulting in water inflow decrease and environmental degradation of the Delta. According to the dynamic variation characteristics of water level, ecological water consumption demand of the Ili River Delta, and the increasing non-environmental water requirement in the future, some strategy for environment protection in the Balkhash Lake Basin were discussed. Source

Abudu S.,Xinjiang Water Resources Research Institute | Abudu S.,New Mexico State University | Cui C.-L.,Xinjiang Water Resources Research Institute | King J.P.,New Mexico State University | Abudukadeer K.,Xinjiang Water Resources Bureau
Water Science and Engineering

This paper presents the application of autoregressive integrated moving average (ARIMA), seasonal ARIMA (SARIMA), and Jordan-Elman artificial neural networks (ANN) models in forecasting the monthly streamflow of the Kizil River in Xinjiang, China. Two different types of monthly streamflow data (original and deseasonalized data) were used to develop time series and Jordan-Elman ANN models using previous flow conditions as predictors. The one-month-ahead forecasting performances of all models for the testing period (1998-2005) were compared using the average monthly flow data from the Kalabeili gaging station on the Kizil River. The Jordan-Elman ANN models, using previous flow conditions as inputs, resulted in no significant improvement over time series models in one-month-ahead forecasting. The results suggest that the simple time series models (ARIMA and SARIMA) can be used in one-month-ahead streamflow forecasting at the study site with a simple and explicit model structure and a model performance similar to the Jordan-Elman ANN models. Copyright © Editorial Office of Water Science and Engineering. Source

Deng M.-J.,Xinjiang Water Resources Bureau
Shuikexue Jinzhan/Advances in Water Science

An inland river in arid land can be divided into several landform units, including mountain area, mountain-front alluvial fan, alluvial plain, belt of transition of oasis and desert, and desert and so on. Mountain-front depressed belt around most inland rivers has huge thick gravel aquifer, which is natural ground reservoir with rich ground runoff. When surface water flows through flood alluvial fan, a large quantity of seepage flow from rivers and canals compensates depressed belt of mountain-front ground reservoir. After runoff flows into plain area of fine soil from the lower ridge of flood alluvial fan, grain of soil gradually becomes fine which forms a natural ground dam of blocking water while ground runoff is over-spilled in the form of spring water after it is blocked. Taking the Pilot Project of Ground Reservoir in Tailan River as an example, the paper proposed detailed idea of construction ground reservoir of Cross-section Kariz wells mountain-front depressed belt on the basis of analysis and research on main technical characteristics of Kariz wells and combined with characteristics of landform and land feature, structure of storage water and water resources transformation. It gives primarily exploration of structure design principles on followings of its three parts: feasibility of ground reservoir by construction of Cross-section Kariz wells and its reservoir system of compensation by diversion of seepage flow, its water-collected system of Cross-section Kariz wells, and water delivery system of artesian siphon. Depressed ground reservoir is ideal for water resources works for emergency to fight the drought. It explores a new model for prompting water resources utilization efficiency and regulation water united surface water with the ground water based on its research and pilot. Source

Deng M.-J.,Xinjiang Water Resources Bureau | Long A.-H.,Xinjiang Water Resources Bureau | Long A.-H.,China Institute of Water Resources and Hydropower Research | Gong Y.,Xinjiang Hydrology and Water Resources Bureau | Ma J.-L.,Xinjiang Hydrology and Water Resources Bureau
Shuili Xuebao/Journal of Hydraulic Engineering

The Irtysh River, an international river rising in Mongolia and flowing across China, Kazakhstan and Russia, flowes into the Arctic Ocean. Based on the reasonable estimation of the surface water resources in the middle reach, this paper constructed the process of runoff variations along the mainstream comb-ing with the analysis of water resources utilization and development, and calculated water loss and consumption in the region. Furthermore, the paper analyzed and judged the issues of potential exploration and utilization of water resources, ecologic water level and protection of the Zaysan Lake, possible impact on the river section related to Russia caused by exploration and utilization on the upper and middle reach of the river. Source

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