Grazing and ecosystem service delivery in global drylands
Grazing and ecosystem service delivery in global drylands
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DOI：
10.1126/science.abq4062
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发表时间：
2022-11-25
期刊：
影响因子：
56.9
通讯作者：
Gross, Nicolas
中科院分区：
文献类型：
--
作者：
Maestre, Fernando T.;Le Bagousse-Pinguet, Yoann;Gross, Nicolas
放牧是世界上最广泛的土地利用方式。然而，它对生态系统服务的影响仍然不确定，因为放牧压力、气候、土壤特性和生物多样性之间的普遍相互作用可能会发生，但从未同时解决。利用对六大洲98个地点的标准化调查，我们表明放牧压力、气候、土壤和生物多样性之间的相互作用对于解释全球旱地基本生态系统服务的提供至关重要。放牧压力的增加减少了温暖和物种贫乏旱地的生态系统服务提供，而在较冷和物种丰富的地区观察到了放牧的积极影响。考虑放牧与当地非生物和生物因素之间的相互作用是了解气候变化和日益增加的人类压力下旱地生态系统命运的关键。
Grazing represents the most extensive use of land worldwide. Yet its impacts on ecosystem services remain uncertain because pervasive interactions between grazing pressure, climate, soil properties, and biodiversity may occur but have never been addressed simultaneously. Using a standardized survey at 98 sites across six continents, we show that interactions between grazing pressure, climate, soil, and biodiversity are critical to explain the delivery of fundamental ecosystem services across drylands worldwide. Increasing grazing pressure reduced ecosystem service delivery in warmer and speciespoor drylands, whereas positive effects of grazing were observed in colder and species-rich areas. Considering interactions between grazing and local abiotic and biotic factors is key for understanding the fate of dryland ecosystems under climate change and increasing human pressure.