College of Urban and Environmental Sciences, Peking University, No.5 Yiheyuan Road, Haidian District, Beijing 100871, China.
Univ. Bordeaux, UMR EPOC CNRS 5805, F-33400 Talence, France.
Sci Total Environ. 2022 Nov 15;847:157659. doi: 10.1016/j.scitotenv.2022.157659. Epub 2022 Jul 27.
Facing water and land scarcity, planting non-food biofuel crops on marginal land depending on natural rainfall has been considered as an attractive means of achieving sustainable biofuel development. However, the complex connection between rainfall and marginal land resources in spatial-temporal distribution affects the optimal planting layout of non-food biofuel crops as well as the assessment of biofuel potential, especially in arid areas. In this study, we constructed a water-land-biofuel nexus centered on non-food biofuel crops, optimized the layout of three non-food biofuel crops, sweet sorghum, Jerusalem artichoke and switchgrass, based on fuzzy mathematics method under the water-land-biofuel nexus perspective, determined yield-rainfall curve to calculate the development potential of non-food biofuel crops. The results showed that sweet sorghum and Jerusalem artichoke are more suitable for planting in Ningxia. Three potential scenarios are set up under different growth conditions and agricultural technologies. The theoretical biofuel production is [9.64× 10, 10.93× 10] GJ, which was verified by the result that the biofuel production per unit area is close to the lower limit of the test production range. It can also be speculated that there may exist irrigation supply and fertilization in the actual crops planting in other studies.
面对水和土地资源短缺，在依靠自然降雨的边际土地上种植非食用生物燃料作物已被认为是实现可持续生物燃料发展的一种有吸引力的手段。然而，降雨与边际土地资源在时空分布上的复杂关系，影响了非食用生物燃料作物的最佳种植布局和生物燃料潜力的评估，尤其是在干旱地区。本研究以非食用生物燃料作物为中心构建了水-地-生物燃料关系，基于模糊数学方法，在水-地-生物燃料关系视角下，优化了甜高粱、菊芋和柳枝稷三种非食用生物燃料作物的布局，确定了产量-降雨曲线，以计算非食用生物燃料作物的发展潜力。结果表明，甜高粱和菊芋更适合在宁夏种植。在不同的生长条件和农业技术下设置了三个潜在情景。理论生物燃料产量为[9.64×10, 10.93×10] GJ，这一结果通过单位面积生物燃料产量接近测试生产范围下限得到了验证。还可以推测，在其他研究中实际种植的作物可能存在灌溉供应和施肥。
