Universität zu Köln

Ayyad, Saher ORCID: 0000-0001-8758-9281 and Khalifa, Muhammad (2021). Will the Eastern Nile countries be able to sustain their crop production by 2050? An outlook from water and land perspectives. Sci. Total Environ., 775. AMSTERDAM: ELSEVIER. ISSN 1879-1026

Elagib, Nadir Ahmed, Khalifa, Muhammad, Babker, Zryab, Musa, Ammar Ahmed and Fink, Andreas H. . Demarcating the rainfed unproductive zones in the African Sahel and Great Green Wall regions. Land Degrad. Dev.. HOBOKEN: WILEY. ISSN 1099-145X

Elagib, Nadir Ahmed, Khalifa, Muhammad ORCID: 0000-0002-3100-9353, Rahma, Abbas E., Babker, Zryab and Gamaledin, Suad Ibrahim (2019). Performance of major mechanized rainfed agricultural production in Sudan: Sorghum vulnerability and resilience to climate since 1970. Agric. For. Meteorol., 276. AMSTERDAM: ELSEVIER. ISSN 1873-2240

Kamga, Marc Anselme, Fils, Salomon Cesar Nguemhe, Ayodele, Moyosore Oladele, Olatubara, Charles Olufisayo, Nzali, Serge, Adenikinju, Adeola and Khalifa, Muhammad ORCID: 0000-0002-3100-9353 (2020). Evaluation of land use/land cover changes due to gold mining activities from 1987 to 2017 using landsat imagery, East Cameroon. GeoJournal, 85 (4). S. 1097 - 1115. DORDRECHT: SPRINGER. ISSN 1572-9893

Khalifa, Muhammad ORCID: 0000-0002-3100-9353, Elagib, Nadir Ahmed, Ahmed, Bashir Mohammed, Ribbe, Lars ORCID: 0000-0003-3052-1782 and Schneider, Karl ORCID: 0000-0002-4381-2151 . Exploring socio-hydrological determinants of crop yield in under-performing irrigation schemes: pathways for sustainable intensification. Hydrol. Sci. J.-J. Sci. Hydrol.. ABINGDON: TAYLOR & FRANCIS LTD. ISSN 2150-3435

Khalifa, Muhammad ORCID: 0000-0002-3100-9353, Elagib, Nadir Ahmed, Ribbe, Lars and Schneider, Karl ORCID: 0000-0002-4381-2151 (2018). Spatio-temporal variations in climate, primary productivity and efficiency of water and carbon use of the land cover types in Sudan and Ethiopia. Sci. Total Environ., 624. S. 790 - 807. AMSTERDAM: ELSEVIER SCIENCE BV. ISSN 1879-1026

Liu, Yangyang, Yang, Yue, Wang, Qian, Khalifa, Muhammad, Zhang, Zhaoying, Tong, Linjing, Li, Jianlong and Shi, Aiping (2019). Assessing the Dynamics of Grassland Net Primary Productivity in Response to Climate Change at the Global Scale. Chin. Geogr. Sci., 29 (5). S. 725 - 741. NEW YORK: SPRINGER. ISSN 1993-064X

Liu, Yangyang, Zhang, Zhaoying, Tong, Linjing, Khalifa, Muhammad, Wang, Qian, Gang, Chengcheng ORCID: 0000-0002-2804-5636, Wang, Zhenqian, Li, Jianlong and Sun, Zhengguo (2019). Assessing the effects of climate variation and human activities on grassland degradation and restoration across the globe. Ecol. Indic., 106. AMSTERDAM: ELSEVIER. ISSN 1872-7034

Lunyolo, Lilian Daphine, Khalifa, Muhammad and Ribbe, Lars (2021). Assessing the interaction of land cover/land use dynamics, climate extremes and food systems in Uganda. Sci. Total Environ., 753. AMSTERDAM: ELSEVIER. ISSN 1879-1026