Analysis of the types of animal husbandry and planting that influence household biogas in rural China. (15th January 2022)

• Record Type: Journal Article
• Authors: Li, Yaxing; Yan, Bojie; Qin, Yanfang; Shi, Wenjiao; Yan, Jingjie
• Is Part Of: Journal of cleaner production. Volume 332(2022)
• Publication Date: 2022-01-15
• Subjects: Household biogas -- Biogas production -- Animal husbandry -- Planting -- Ordinary least squares -- Geographically weighted regression; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2021.130025
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: Producing biogas from agricultural waste by using a household biogas digester has a critical role in increasing energy supply and reducing greenhouse gas emissions in rural areas. However, only a few studies have analyzed the type of animal husbandry and planting that influence household biogas. This paper analyzes the spatial-temporal distribution of household biogas and its proportion in the total biogas produced in rural China from 2009 to 2018. The correlation between household biogas in rural China and animal husbandry and planting from 2009 to 2018 is also examined. The types of animal husbandry and planting that influence household biogas are then respectively determined via ordinary least squares and geographically weighted regression. Results show that the spatial-temporal distributions of household biogas with maximum and minimum values of 1.384 × 10 10 m 3 in 2011 and 0.8420 × 10 10 m 3 in 2018, respectively and its proportion with maximum and minimum values of 94.83% in 2009 and 75.07% in 2018, respectively significantly vary and show a declining trend from 2009 to 2018. The number of cattle and pigs is identified as the main animal husbandry factor that influences household biogas, whereas the planting areas of vegetables, fiber, and tobacco were identified to be the main planting factors. Considering fitting effects, R 2 and adjusted R 2 values of 0.8620 and 0.8100 obtained by geographically weighted regression respectively, were higher than those of ordinary least squares (0.6480 and 0.6220, respectively), respectively in animal husbandry factors, whereas R 2 and adjusted R 2 values of 0.8400 and 0.7990 obtained by geographically weighted regression, respectively, were higher than those of ordinary least squares (0.7190 and 0.6880, respectively) in planting factors. These results provide a reference for planning the production of biogas and the utilization of agricultural waste. Graphical abstract: Image 1 Highlights: Reveal spatial-temporal differences in the household biogas. Show spatial-temporal distribution of proportion of household biogas in total biogas. Determine correlation of household biogas with types of animal husbandry and planting. Identify types of animal husbandry and planting influence household biogas. Reveal spatial heterogeneity of the type of animal husbandry and planting.