Serraye Aicha, Idder Tahar, Daddi Bouhoun Mustapha, Diatta Jean B, Tani Ahmed, Genz Paul, Ackermann Marcel, Nili Mohammed S
Laboratory of Phoeniciculture Research, Department of Biology, University of Kasdi Merbah, BP 511 Route de Ghardaïa, 30000, Ouargla, Algeria.
Laboratory of Ecosystem Protection in Arid and Semi-Arid Zones, Department of Agricultural Sciences, University of Kasdi Merbah, B.P. 511 Route de Ghardaïa, 30000, Ouargla, Algeria.
Sci Rep. 2025 May 27;15(1):18551. doi: 10.1038/s41598-025-00522-4.
The study outlines the dynamics of Eucalyptus and Sorghum biomass under treated wastewater (TWW) irrigation in the Algerian Sahara to encourage water recycling and green biomass production regarding the freshwater (FW) shortage and plant cover rarity. Eucalyptus samples were taken at 03 different ages and 03 distinct layers. Sorghum samples were conducted from 2018 to 2020. The results proved a significant growth in Eucalyptus branch biomass and total biomass carbon of Eucalyptus branches in the layers 0-1 m and 2-4 m at 3 and 7 years old trees due to TWW irrigation. Eucalyptus aboveground biomass increased more with FW irrigation (mean values were 204.56 kg and 364.30 kg) compared to TWW irrigation (mean values were 126.64 kg and 222.56 kg) for 7 and 10 years old trees, respectively, across the ascending tree ages. Total nitrogen in Eucalyptus leaves was positively affected by TWW in the layers 2-4 m at 7 years old trees, with mean values of 3.10%. For Sorghum plants, TWW had a significant positive impact on the aboveground biomass, measuring 1.08 kg/m in autumn and 1.13 kg/m in spring, likewise on the total carbon biomass and nitrogen content. TWW irrigation can be an option for biomass growth for the studied vegetation in deserts.
该研究概述了在阿尔及利亚撒哈拉地区，经处理的废水（TWW）灌溉下桉树和高粱生物量的动态变化，以促进水资源循环利用和绿色生物量生产，应对淡水（FW）短缺和植被覆盖稀少的问题。桉树样本在3个不同树龄和3个不同层次采集。高粱样本采集时间为2018年至2020年。结果表明，由于TWW灌溉，3年和7年树龄的桉树在0 - 1米和2 - 4米层次的树枝生物量和树枝总生物量碳有显著增长。随着树龄增加，7年和10年树龄的桉树，与TWW灌溉（均值分别为126.64千克和222.56千克）相比，FW灌溉下地上生物量增加更多（均值分别为204.56千克和364.30千克）。7年树龄的桉树在2 - 4米层次，TWW对其叶片总氮有积极影响，均值为3.10%。对于高粱植株，TWW对地上生物量有显著积极影响，秋季为1.08千克/平方米，春季为1.13千克/平方米，对总碳生物量和氮含量也有同样影响。TWW灌溉可以作为沙漠中所研究植被生物量增长的一种选择。
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