Long‐Term Active Rather than Passive Restoration Promotes Soil Organic Carbon Accumulation by Alleviating Microbial Nitrogen Limitation in an Extremely Degraded Alpine Grassland. - Gong, Jinchao; Sun, Feida; Wu, Jingjing; Zhou, Shijie; Xiu, Yue; Li, Linlin; Kausar, Tahmina; Ma, Zhouwen; Zhou, Jiqiong; Liu, Lin; Cui, Yongxing; Sardans, Jordi; et al. (Advanced Science, 2026)