Lu Zhang, T. Sun, Taoli Huhe, Peng Liu, Xueqin Li, Yanling Li, Tingzhou Lei, Yong Chen
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引用次数: 0
摘要
开发边际土地种植能源作物,进而发展生物质液化燃料,是缓解能源危机、促进温室气体减排、保护自然生态环境的有效途径。本研究以中国河南省为研究对象,通过使用 ArcGIS 软件处理土地利用遥感数据,获得了该省贫瘠土地的空间分布和面积。通过选取土壤厚度、坡度、土壤质地(沙体积分数)、10 ℃以上积温、有机质含量和年降水总量等关键自然条件作为指标,将河南省的边缘土地划分为一类地、二类地和三类地。研究结果表明,全省边际土地总面积为 1.68×104 平方公里,其中一级边际土地面积为 0.62×104 平方公里,二级边际土地面积为 0.83×104 平方公里,三级边际土地面积为 0.23×104 平方公里。以糖料草生产生物乙醇为例,河南省边缘土地可收获糖料草 8.92×107 t,可转化为 5.80×106 t 生物乙醇,相当于 6.96×106 t 标准煤。该研究可为河南省实现能源结构优化、巩固能源安全提供参考。
Overview of Marginal Lands in Henan Province, China and Evaluation of Development Potential of Biomass-To-Liquid Fuels
Developing marginal lands to plant energy crops and then develop biomass-to-liquid fuels is an effective way to ease the energy crisis, promote greenhouse gas emission reduction, and protect the natural ecological environment. Taking Henan Province, China as a research object, the research obtained spatial distributions and areas of marginal lands in the province by processing remote-sensing data for land use using software ArcGIS. Marginal lands in Henan Province were classified into the first-class, second-class, and third-class ones by selecting key natural conditions including the soil thickness, slope, soil texture (sand volume fraction), accumulated temperature above 10 °C, organic matter content, and total annual precipitation as indices. The research showed that the total area of marginal lands in the province is 1.68×104 km2, including 0.62×104 km2 of first-class marginal lands, 0.83×104 km2 of second-class marginal lands, and 0.23×104 km2 of third-class marginal lands. Taking production of bioethanol with sugar grass as an example, 8.92×107 t of sugar grass can be harvested on the marginal lands in Henan Province, which can be converted into 5.80×106 t of bioethanol, equivalent to 6.96×106 t of standard coal. The research can provide reference for realizing energy structure optimization and consolidating energy security in Henan Province.