While South and Southeast Asian countries have experienced resilient economic growth over the years, the region has also been a global hotspot for biodiversity loss. Thus, this study examines the income-biodiversity loss nexus within the framework of the N-shaped environmental Kuznets curve (EKC) for South and Southeast Asian countries by employing annual sample data over the period of 2013–2019. The N-shaped nexus between income and biodiversity loss is analyzed using the negative binomial regressions to deal with count outcomes and to overcome the over-dispersion issues. The estimation results consistently depict that the N-shaped EKC hypothesis holds true for South and Southeast Asia in both the aggregated model and disaggregated models (eight taxonomic groups). It is discovered that the threatened species rises when income reaches between $11,607 and $16,329 and declines when income goes to $38,880 and $52,303 over the sample period. Agricultural land and threatened species are positively related. Further, the control of corruption can lessen the decline in biodiversity. Our study reveals some important policies to achieve sustainable development without affecting the health of ecosystems in South and Southeast Asia.

中文翻译：

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生物多样性丧失的N形环境库兹涅茨曲线：计数数据分析

尽管南亚和东南亚国家多年来经历了强劲的经济增长，但该地区也一直是全球生物多样性丧失的热点地区。因此，本研究利用 2013-2019 年期间的年度样本数据，在南亚和东南亚国家 N 形环境库兹涅茨曲线 (EKC) 框架内考察了收入与生物多样性损失之间的关系。使用负二项式回归分析收入与生物多样性丧失之间的 N 形关系，以处理计数结果并克服过度分散问题。估计结果一致表明，N 形 EKC 假设在聚合模型和分类模型（八个分类组）中都适用于南亚和东南亚。研究发现，在样本期内，当收入达到 11,607 美元至 16,329 美元之间时，受威胁物种就会增加；而当收入达到 38,880 美元至 52,303 美元之间时，受威胁物种就会减少。农业用地和受威胁物种呈正相关。此外，控制腐败可以减少生物多样性的下降。我们的研究揭示了一些在不影响南亚和东南亚生态系统健康的情况下实现可持续发展的重要政策。