| Investigation of crop evapotranspiration and irrigation water requirement in the lower Amu Darya River Basin,Central Asia |
| |
| 作者姓名： | Durdiev KHAYDAR CHEN Xi HUANG Yue Makhmudov ILKHOM LIU Tie Ochege FRIDAY Abdullaev FARKHOD Gafforov KHUSEN Omarakunova GULKAIYR |
| |
| 作者单位： | State Key Laboratory of Desert and Oasis Ecology;Research Center for Ecology and Environment of Central Asia;University of Chinese Academy of Sciences;Ministry of Water Resources of the Republic of Uzbekistan;Key Laboratory of GIS&RS Application Xinjiang Uygur Autonomous Region |
| |
| 基金项目： | This study was supported by the International Cooperation Project of National Natural Science Foundation of China(41761144079);the Strategic Priority Research Program of Chinese Academy of Sciences(XDA20060301);the State's Key Project of Research and Development Plan(2017YFC0404501),the International Partnership Program of Chinese Academy of Sciences(131551KYSB20160002);the project of the Research Center of Ecology and Environment in Central Asia(Y934031);a grant from the Regional Collaborative Innovation Project of Xinjiang Uygur Autonomous Region(2020E01010). |
| |
| 摘 要： | High water consumption and inefficient irrigation management in the agriculture sector of the middle and lower reaches of the Amu Darya River Basin(ADRB)have significantly influenced the gradual shrinking of the Aral Sea and its ecosystem.In this study,we investigated the crop water consumption in the growing seasons and the irrigation water requirement for different crop types in the lower ADRB during 2004–2017.We applied the FAO Penman–Monteith method to estimate reference evapotranspiration(ET0)based on daily climatic data collected from four meteorological stations.Crop evapotranspiration(ETc)of specific crop types was calculated by the crop coefficient.Then,we analyzed the net irrigation requirement(NIR)based on the effective precipitation with crop water requirements.The results indicated that the lowest monthly ET0 values in the lower ADRB were found in December(18.2 mm)and January(16.0 mm),and the highest monthly ET0 values were found in June and July,with similar values of 211.6 mm.The annual ETc reached to 887.2,1002.1,and 492.0 mm for cotton,rice,and wheat,respectively.The average regional NIR ranged from 514.9 to 715.0 mm in the 10 Irrigation System Management Organizations(UISs)in the study area,while the total required irrigation volume for the whole region ranged from 4.2×109 to 11.6×109 m3 during 2004–2017.The percentages of NIR in SIW(surface irrigation water)ranged from 46.4%to 65.2%during the study period,with the exceptions of the drought years of 2008 and 2011,in which there was a significantly less runoff in the Amu Darya River.This study provides an overview for local water authorities to achieve optimal regional water allocation in the study area.
|
| 关 键 词： | crop evapotranspiration crop water requirement net irrigation requirement CROPWAT model Amu Darya River Aral Sea |
Investigation of crop evapotranspiration and irrigation water requirement in the lower Amu Darya River Basin,Central Asia |
| |
| Durdiev KHAYDAR,CHEN Xi,HUANG Yue,Makhmudov ILKHOM,LIU Tie,Ochege FRIDAY,Abdullaev FARKHOD,Gafforov KHUSEN,Omarakunova GULKAIYR.Investigation of crop evapotranspiration and irrigation water requirement in the lower Amu Darya River Basin,Central Asia[J].Journal of Arid Land,2021,13(1):23-39. |
| |
| Authors: | Durdiev KHAYDAR |
| |
| Institution: | ;1.State Key Laboratory of Desert and Oasis Ecology;2. Xinjiang Institute of Ecology and Geography;3. Chinese Academy of Sciences;4.Research Center for Ecology and Environment of Central Asia |
| |
| Abstract: | High water consumption and inefficient irrigation management in the agriculture sector of the middle and lower reaches of the Amu Darya River Basin(ADRB) have significantly influenced the gradual shrinking of the Aral Sea and its ecosystem. In this study, we investigated the crop water consumption in the growing seasons and the irrigation water requirement for different crop types in the lower ADRB during 2004–2017. We applied the FAO Penman–Monteith method to estimate reference evapotranspiration(ET_0) based on daily climatic data collected from four meteorological stations. Crop evapotranspiration(ET_c) of specific crop types was calculated by the crop coefficient. Then, we analyzed the net irrigation requirement(NIR) based on the effective precipitation with crop water requirements. The results indicated that the lowest monthly ET_0 values in the lower ADRB were found in December(18.2 mm) and January(16.0 mm), and the highest monthly ET_0 values were found in June and July, with similar values of 211.6 mm. The annual ET_c reached to 887.2, 1002.1, and 492.0 mm for cotton, rice, and wheat, respectively. The average regional NIR ranged from 514.9 to 715.0 mm in the 10 Irrigation System Management Organizations(UIS_s) in the study area, while the total required irrigation volume for the whole region ranged from 4.2×10~9 to 11.6×10~9 m~3 during 2004–2017. The percentages of NIR in SIW(surface irrigation water) ranged from 46.4% to 65.2% during the study period, with the exceptions of the drought years of 2008 and 2011, in which there was a significantly less runoff in the Amu Darya River. This study provides an overview for local water authorities to achieve optimal regional water allocation in the study area. |
| |
| Keywords: | crop evapotranspiration crop water requirement net irrigation requirement CROPWAT model Amu Darya River Aral Sea |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《干旱区科学》浏览原始摘要信息 |
| 点击此处可从《干旱区科学》下载免费的PDF全文 |
|
