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20 g / m 2 或 32 g / m 2 时生物量最高。 2) 土壤全量养分和速效养分在施肥量为 20 g / m 2 或 32 g / m 2 时较高,施肥量增加 到 40 g / m 2 时土壤资源逐渐降低。 3) 不同施肥梯度矮嵩草草甸土壤有机碳和微生物生物量碳在 0-10 cm 土层明显较高,且随 着施肥量的增加,分布在 0-40 cm 土层的土壤有机碳含量呈单峰曲线变化。 施肥 20 g / m 2 或 32 g / m 2 时土壤有机碳和微生物 量碳含量最高。 4) 30 g / m 2 施肥量可作为高寒草甸最佳施氮水平。 施肥梯度下土壤有机碳和微生物量碳含量可作为衡量土壤 肥力和土壤质量变化的重要指标。 高施肥量(逸40 g / m 2

The Yangtze River and Yellow River source regions are part of the highest and largest distribution area of wetlands in the world and play a key role in sustaining the ecosystem balance in this region. Current global changes, such as climate change and human activity, are significantly affecting the landscape pattern of these wetlands. These changes have had a major effect on the water cycle and ecosystem balance in this region and have attracted widespread attention. In order to clarify the characteristics of these changes, this research examines the temporal and spatial variation of the distributive patterns of the alpine wetlands in the Yangtze River and Yellow River source regions. The analysis was conducted by using

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Impacts of snow cover change on soil water-heat processes of swamp and meadow in Permafrost Region, Qinghai