SAFER-ET based assessment of irrigation patterns and impacts on groundwater use in the central Punjab, Pakistan

Nadeem，Adeel Ahmad1; Zha，Yuanyuan1; Shi，Liangsheng1; Zafar，Zeeshan1; Ali，Shoaib2; Zhang，Yufan1; Altaf，Adnan Raza3; Afzal，Muhammad4; Zubair，Muhammad5

2023-11-01

10.1016/j.agwat.2023.108545

Agricultural Water Management   影响因子和分区

0378-3774

1873-2283

The excessive pumping of groundwater during the dry season in Pakistan is identified as a significant concern for groundwater sustainability. Farmers encounter difficulties in efficiently managing irrigation, and adopting the outputs of Irrigation Advisory System (IAS) to improve irrigation practices. Upgrading the existing IAS can help to identify the regions with over-irrigation issues and optimize outreach efforts. To solve these issues, we define the new concept of integrating Gravity Recovery and Climate Experiment (GRACE) total water storage anomalies (TWSA) and Landsat 8 imageries, which can enhance the IAS efficiency by accurately identifying regions facing groundwater depletion by estimating actual crop water consumption through application of the Simple Algorithm For Evapotranspiration Retrieving (SAFER) on Landsat 8 data and Penman-Monteith (PM) method was used to calculate crop water demand using meteorological forcing data from Global Land Data Assimilation System (GLDAS) over the five selected districts of Punjab during the dry seasons of year 2013–2020. Comparing actual water consumption (SAFER evapotranspiration (ET)) with in-situ groundwater depth, strong correlations were found between them that are supporting the use of Landsat 8 data for irrigation monitoring. Further, compared SAFER ET was with PM ET to calculate the percentage of over/under irrigated regions, and the results revealed that most of the selected districts were over-irrigated, indicating the potential for excessive irrigation water savings. Our results show that the integration of GRACE TWSA and Landsat 8 data enhance the efficiency of operational IAS and can lead to potential savings of 81% (equivalent to 155 million m) of groundwater during the dry season in the Central Punjab, Pakistan. Satellite data integration globally enhances IAS implementation, aiding regions with unsustainable dry season irrigation. This empowers farmers to optimize agriculture through precise IAS outputs.

Groundwater Irrigation advisory system Pakistan Remote sensing SAFER algorithm

SCI ; EI

英语

其他

National Natural Science Foundation of China[52279042] ; Key Research and Developement Program in Guanxi[AB23026021]

Agriculture ; Water Resources

Agronomy ; Water Resources

WOS:001092854000001

ELSEVIER

20234114869833

Crops ; Data integration ; Digital storage ; Drought ; Efficiency ; Evapotranspiration ; Geodetic satellites ; Groundwater ; Groundwater resources ; Image enhancement ; Irrigation ; Landsat ; Water supply

Surveying:405.3 ; Precipitation:443.3 ; Water Resources:444 ; Groundwater:444.2 ; Water Supply Systems:446.1 ; Satellites:655.2 ; Data Storage, Equipment and Techniques:722.1 ; Data Processing and Image Processing:723.2 ; Agricultural Methods:821.3 ; Agricultural Products:821.4 ; Production Engineering:913.1

AGRICULTURAL SCIENCES

2-s2.0-85173229237

Scopus

1.State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan,430072,China
2.Department of Earth and Space Sciences,Southern University of Science and Technology,Shenzhen,518005,China
3.School of Engineering,Huazhong Agricultural University,Wuhan,430070,China
4.State Key Laboratory of Desert and Oasis Ecology,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi,830011,China
5.School of Geographical Science,East China Normal University,Shanghai,200241,China

Nadeem，Adeel Ahmad,Zha，Yuanyuan,Shi，Liangsheng,et al. SAFER-ET based assessment of irrigation patterns and impacts on groundwater use in the central Punjab, Pakistan[J]. Agricultural Water Management,2023,289.

Nadeem，Adeel Ahmad.,Zha，Yuanyuan.,Shi，Liangsheng.,Zafar，Zeeshan.,Ali，Shoaib.,...&Zubair，Muhammad.(2023).SAFER-ET based assessment of irrigation patterns and impacts on groundwater use in the central Punjab, Pakistan.Agricultural Water Management,289.

Nadeem，Adeel Ahmad,et al."SAFER-ET based assessment of irrigation patterns and impacts on groundwater use in the central Punjab, Pakistan".Agricultural Water Management 289(2023).