Agroforestry systems can play an important role in mitigating the effects of climate change given their capacity to increase tree diversity and to store more carbon than conventional farming. This study aims at assessing carbon stocks and the use of shade trees in different coffee growing systems in the Northeast Peruvian Amazon. Carbon stocks in trees were estimated by field-based measurements and allometric equations. Carbon stocks in dead wood, litter and soil (upper 60 cm) were determined using field sampling and laboratory analysis. The diversity analysis drew on the Shannon–Weiner diversity index, and focus groups were used to obtain information about the local use of shade trees. The total carbon stock in the polyculture-shaded coffee system was 189 t C/ha, while the Inga-shaded and unshaded systems totalled 146 and 113 t C/ha, respectively. The soil compartment contributed the largest carbon stock in the coffee growing systems and contained 67, 82 and 96% of the total carbon stock in the polyculture-shaded, Inga-shaded and unshaded coffee systems, respectively. The Shannon–Weiner index and tree species richness values were highest for the polyculture-shaded coffee system, with a total of 18 tree species identified as important sources of fodder, food, wood, firewood and medicine. Therefore, coffee agroforestry systems play a significant role in carbon storage, while promoting conservation of useful trees in agricultural landscapes in the Peruvian Amazon.

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秘鲁亚马逊地区不同咖啡种植系统中的碳储量和遮荫树的使用

农林业系统可以在减轻气候变化影响方面发挥重要作用，因为它们能够增加树木多样性并比传统农业储存更多的碳。本研究旨在评估秘鲁亚马逊东北部不同咖啡种植系统中的碳储量和遮荫树的使用。树木中的碳储量是通过基于现场的测量和异速生长方程估算的。使用现场采样和实验室分析确定死木、枯枝落叶和土壤（60 厘米以上）中的碳储量。多样性分析借鉴了香农-韦纳多样性指数，并使用焦点小组来获取有关当地遮荫树使用的信息。混养遮荫咖啡系统的总碳储量为 189 吨 C/公顷，而印加阴影和无阴影系统的总量分别为 146 和 113 吨 C/ha。土壤隔间贡献了咖啡种植系统中最大的碳储量，占混养阴影中总碳储量的 67%、82% 和 96%，印加-阴影和无阴影的咖啡系统，分别。混养遮荫咖啡系统的香农-韦纳指数和树种丰富度值最高，共有 18 种树种被确定为饲料、食物、木材、柴火和药物的重要来源。因此，咖啡农林业系统在碳储存方面发挥着重要作用，同时促进了秘鲁亚马逊农业景观中有用树木的保护。