ABSTRACT The spread of invasive alien plant species (IAPs) contributes to the management complexity experienced in primary agriculture and increases the costs of maintaining the land in its productive state. Equally important to the clearing of IAPs are the land use options post-clearing. This study was conducted on private farms at the Mokolo River catchment to determine the most viable agricultural land use option after clearing IAPs. System dynamics modelling is used as a data analysis tool. The outcomes of this study indicate that early restoration of the farm area invaded by IAPs is more beneficial than restoring when the area is heavily degraded. Some of the gains from early restoration are a minimum unit reference value (URV) of R7.05 (instead of R8.29 or R9.08) per cubic metre of water produced by clearing IAPs through a co-financing strategy by the private sector and the state. Moreover, a negative net income is generated through extensive agricultural production while positive net income is generated though intensive agricultural production from 2008–2030. Therefore, this study suggests that intensive agricultural production is economically viable and has the potential to co-finance the government’s activities of clearing IAPs.

中文翻译：

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在清除南非林波波省 Mokolo 流域的外来入侵植物后评估可行的农业用地选择

摘要 外来入侵植物物种 (IAP) 的传播加剧了初级农业中管理的复杂性，并增加了将土地保持在生产状态的成本。与 IAP 的清理同等重要的是清理后的土地使用选择。这项研究是在 Mokolo 河集水区的私人农场上进行的，以确定清除 IAP 后最可行的农业用地选择。系统动力学建模被用作数据分析工具。这项研究的结果表明，早期恢复被 IAP 入侵的农场区域比在该区域严重退化时恢复更有益。早期恢复的一些收益是 R7.05（而不是 R8.29 或 R9.05）的最小单位参考值 (URV)。08) 通过私营部门和国家的联合融资战略清除 IAP 产生的每立方米水。此外，从 2008 年到 2030 年，粗放式农业生产产生了负净收入，而集约化农业生产产生了正净收入。因此，这项研究表明，集约化农业生产在经济上是可行的，并且有可能共同资助政府清算 IAP 的活动。