水资源约束下的生物质能源发展潜力研究  

POTENTIAL STUDY OF BIOMASS ENERGY CONSTRAINED BY WATER RESOURCES SHORTAGE

作　　者：高婵 王茜 杨小柳[1] Gao Chan;Wang Xi;Yang Xiaoliu(College of Urban and Environmental Sciences,Peking University,Beijing 100871,China)

机构地区：[1]北京大学城市与环境学院,北京100871

出　　处：《太阳能学报》2021年第7期481-489,共9页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(41471017)。

摘　　要：为客观评价特定地区的生物质能源生产潜力,以宁夏为例,考虑到当地有限的耕地资源和稀缺的水资源,选取适宜在宁夏边际土地上种植的3种能源作物(甜高粱、菊芋、柳枝稷);并依据当地的天然降水、能源作物的需水特征和能源产量理论最低需水量,确定能有效提高当地的生物质能源生产潜力的能源作物组合,定量计算宁夏生物质能源的最大生产潜力。结果表明:1)宁夏边际土地总面积为31305.49 km^(2),占宁夏全区的62.13%,主要分布区域为宁夏中部和西南部,其中适宜种植甜高粱、菊芋、柳枝稷的边际土地面积依次分别为25053.82、21287.12、3900.54 km2;2)甜高粱和菊芋能源作物组合可有效提高宁夏的生物质能源生产潜力。在无人工灌溉的情况下,宁夏生物质能源的最大生产潜力每年可达10.93×107GJ。In order to objectively evaluate the production potential of biomass energy in Ningxia Region,sweet sorghum,Jerusalem artichoke,and switchgrass were selected as energy crops suitable for planting on the marginal land with limited water and soil resources.Considering the precipitation condition,the water demand characteristics of energy crops and the theoretical minimum water demand for energy production,an energy crop combination plan is determined to improve the local biomass energy production potential,and the maximum biomass energy yield potential of Ningxia is quantitatively calculated.The results show that:1)the total area of marginal land in Ningxia is 31305.49 km^(2),accounting for 62.13%of the whole region,mostly in the middle and southwest,and 25053.82 km2,21287.12 km^(2) and 3900.54 km2 of which are suitable for planting sweet sorghum,Jerusalem artichoke and switchgrass,respectively;2)the combination plan of sweet sorghum and Jerusalem artichoke can effectively improve the biomass energy production potential in Ningxia.Without artificial irrigation,the maximum production potential of biomass energy in Ningxia could reach 10.93×10^(7)GJ per year.

关 键 词：生物质能 水资源 能源作物 边际性土地 生产潜力 需水特征 

分 类 号：S216.2[农业科学—农业机械化工程]