Marginal land bioethanol production of sweet sorghum based on limited water resources in Northwest China
作者机构：Center for Agricultural Water Research in ChinaChina Agricultural UniversityBeijing 100083China Wuwei Experimental Station for Efficient Water Use in AgricultureMinistry of Agriculture and Rural AffairsWuwei 733000GansuChina
出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)
年 卷 期：2022年第15卷第3期
页 面：132-138页
核心收录：
学科分类：02[经济学] 0202[经济学-应用经济学] 0828[工学-农业工程]
基 金：This work was partially supported by the National Natural Science Foundation of China(Grant No.51861125103,51725904,51621061) the Discipline Innovative Engineering Plan(Grant No.111 Program,B14002)。
主 题：bioethanol potential marginal land sweet sorghum regional water stress levels water resources limitation
摘 要：Sweet sorghum is considered a leading non-grain candidate for bioethanol production due to its low input requirement,good tolerance,high biomass potential,and high sugar content.However,insufficient studies have been conducted on the spatial distribution of sweet sorghum-based bioethanol production potential considering the water resources limitation.We presented a multi-factor analysis method not only considering terrain,meteorology,soil,and crop natural growth habits but also considering the local water resource to explore the available marginal land suitable for sweet sorghum cultivation and assess the bioethanol production potential in Northwest China.The results showed that 4.63×10^(7)hm^(2)available marginal land was suitable for sweet sorghum planting.Considering the constraint of local water resources,2.76×10^(6)hm^(2)available marginal land was suitable for sweet sorghum planting,accounting for 4.7%of the total available marginal land.And 1.23×10^(10)L bioethanol could be produced on it.Moreover,for these districts under low water stress levels,9.79×10^(5)hm^(2)available marginal land in Gannan Tibet AP and Longnan of Gansu and Hulun Buir of Inner Mongolia was considered a priority to develop sweet sorghum-based bioethanol,and 5.56×10^(9)L bioethanol could be produced in these districts,which can satisfy the 1.54%biofuel goal for 2050 of China.
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