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As the world's largest proposed infrastructure program, China's Belt and Road Initiative will have significant implications for water security, sustainability, and the future of energy generation in Asia. Pakistan, a keystone of the Belt and Road Initiative, presents an ideal case for assessing the impacts of the Initiative's energy financing. We estimate the future water demands of seven new Chinese-financed, coal-fired power plants in Pakistan with a total capacity of 6600 MW. While these facilities may help address Pakistan's energy shortages, our results indicate that by 2055, climate change-induced water stress in Pakistan will increase by 36–92% compared to current levels, and the power plants' new water demands will amount to ∼79.68 million m3. Our findings highlight the need for China and the Belt and Road Initiative's destination countries to integrate resilience and sustainability efforts into energy infrastructure planning. Policy recommendations are offered to permit both sustainable development and responsible water resource management.

Symbiotic nitrogen (N) fixation is the major N input to many ecosystems. Although temperate forests are commonly N limited, symbiotic N-fixing trees (“N fixers”) are rare and decline in abundance as succession proceeds–a challenging paradox that remains unexplained. Understanding demographic processes that underlie N fixers’ rarity and successional decline would provide a proximate answer to the paradox. Do N fixers grow slower, die more frequently, or recruit less in temperate forests? We quantified demographic rates of N-fixing and non-fixing trees across succession using U.S. forest inventory data. We used an individual-based model to evaluate the relative contribution of each demographic process to community dynamics. Compared to non-fixers, N fixers had lower growth rates, higher mortality rates, and lower recruitment rates throughout succession. The mortality effect contributed more than the growth effect to N fixers’ successional decline. Canopy and understory N fixers experienced these demographic disadvantages, indicating that factors in addition to light limitation likely contribute to N fixers’ successional decline. We show that the rarity and successional decline of N-fixing trees in temperate forests is due more to their survival disadvantage than their growth disadvantage, and a recruitment disadvantage might also play a large role.