Peatland restoration is an important mitigation action in the fight against climate change. Researchers encourage farmers to rewet deep-drained lands on organic soil to a shallow water table depth (WTD) to reduce carbon emissions. Raising WTD under grasslands will likely affect local air temperature (TA) and increase relative humidity (RH), with uncertain consequences during heat waves on cattle welfare. We used WTD, TA and RH data (both measured between 1.25 and 2 m above ground) from 22 peatland sites globally to evaluate peatlands’ overall Temperature Humidity Index (THI), an indicator correlated to cattle welfare used in dairy farms (THI>68 increases heart rate, breathing rate and reduces milk yield). We compared them with THI at state weather stations located on neighbouring lands with short grass on non-organic soil, and assessed the impact of WTD.

中文翻译：

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泥炭地的生物气象反馈：提高地下水位以减少与气象相关的牛群压力


泥炭地恢复是应对气候变化的一项重要缓解行动。研究人员鼓励农民将有机土壤上的深排水土地重新湿润至浅地下水位深度 （WTD），以减少碳排放。在草原下提高 WTD 可能会影响当地空气温度 （TA） 并增加相对湿度 （RH），热浪期间对牛福利的影响不确定。我们使用了来自全球 22 个泥炭地站点的 WTD、TA 和 RH 数据（均在离地面 1.25 至 2 m 之间测量）来评估泥炭地的整体温度湿度指数 （THI），该指标与奶牛场使用的牛福利相关（THI>68 增加心率、呼吸频率并降低产奶量）。我们将它们与位于非有机土壤上短草的邻近土地上的州气象站的 THI 进行了比较，并评估了 WTD 的影响。