Feasible Extraction of Maize Residues from Formal Agriculture

Data was derived from the following sources: * Extent of commercial maize farming in Gauteng, North West, Free State, and Mpumalanga was obtained from the Department of Agriculture (2014). * On such land, production of Maize was estimated from scaled productivity (Schulze et. al. yield estimates applied to recent average (10 year) maize production per province, derived from Department of Agriculture Annual Statistics. * Residue production was calculated based a sustainable yield-dependent formula - see discussion in BioEnergy Atlas fact sheets.

本数据集的数据来源于以下渠道：
* 豪登省、西北省、自由邦省及普马兰加省的商业玉米种植规模数据取自农业部2014年发布的资料。
* 针对上述耕地，玉米产量通过缩放后的生产力水平进行估算：即采用Schulze等人的单产估算方法，结合由农业部年度统计数据得出的各省份近10年玉米平均产量开展测算。
* 玉米残余生物量产量基于与可持续单产相关的公式计算得出——具体推导过程详见《生物能源图集》（BioEnergy Atlas）的说明文档。