[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"item-2412":3},{"id":4,"title":5,"url":6,"summary":7,"summary_zh":8,"content":9,"source_name":10,"source_url":6,"published_at":11,"category":12,"cover_url":9,"hotness":13,"is_selected":14,"score":15,"score_detail":16,"sources":24,"tags":26,"view_count":32,"doi":33,"paper":34,"created_at":84},2412,"Experimental evidence of a biological soil crust degradation climate warming amplification feedback","https:\u002F\u002Fdoi.org\u002F10.1038\u002Fs43247-026-03874-5","Biological soil crusts – photosynthetic communities of cyanobacteria, lichens, and\u002For mosses living on soil surfaces – represent about 12% of the global land surface, yet their role in climate mitigation remains uncertain. Here we address this knowledge gap by integrating multiscale remote sensing techniques within a unique long-term climate manipulation experiment. Two decades of in situ climate warming and changes in monsoonal rainfall drove a major shift in biocrust community composition, including a ~ 27% decrease in fractional coverage of late-successional mosses and a ~ 36% increase in fractional cover of early-successional, lightly-pigmented cyanobacteria. This community shift, in-turn, resulted in a ~ 6.3% reduction in photosynthetic potential, ~14.1% increase in surface brightness, ~15.2% decrease in surface moisture, and a ~ 1.5% or ~0.3 °C increase in surface temperature under clear sky daytime conditions for every 10% increase in the relative cover of lightly-pigmented cyanobacteria. Our findings are evidence of a biocrust degradation climate warming amplification feedback, whereby climate warming drives biocrust functional degradation and a net reduction in climate mitigation potential, which further drives warming. This apparent warming amplification feedback is currently missing from process-based models, and thus current climate projections might underestimate the rate of climate warming across global drylands. Climate warming and changes in monsoonal rainfall resulted in a biocrust community composition shift from late-successional mosses to early-successional, lightly pigmented cyanobacteria , resulting in a substantial reduction in photosynthetic potential and net increase in local surface temperatures, based on remote sensing with a long-term dryland experiment in Castle Valley, Utah, USA.","生物土壤结皮——由蓝细菌、地衣和\u002F或苔藓等光合生物群落组成，生存于土壤表面——约占全球陆地表面的12%，但其在气候缓解中的作用仍不确定。本研究通过将多尺度遥感技术整合到一个独特的长期气候操控实验中，来填补这一知识空白。二十年的原位气候变暖和季风降雨变化驱动了生物结皮群落组成的重大转变，包括晚演替苔藓的覆盖度下降约27%，以及早演替、浅色蓝细菌的覆盖度增加约36%。这种群落转变进而导致：浅色蓝细菌相对覆盖度每增加10%，在晴天白天条件下，光合潜力降低约6.3%，地表亮度增加约14.1%，地表湿度降低约15.2%，地表温度升高约1.5%或约0.3 °C。我们的研究结果证明了生物结皮退化-气候变暖放大反馈的存在，即气候变暖驱动生物结皮功能退化并导致气候缓解潜力的净减少，进而进一步驱动变暖。这一明显的变暖放大反馈目前尚未纳入基于过程的模型中，因此当前的气候预估可能低估了全球旱地气候变暖的速率。基于美国犹他州卡斯尔谷一项长期旱地实验的遥感研究，气候变暖和季风降雨变化导致生物结皮群落组成从晚演替苔藓向早演替、浅色蓝细菌转变，造成光合潜力大幅下降和局地地表温度净升高。",null,"Communications Earth & Environment","2026-09-12T00:00:00Z","论文",10,false,87,{"impact":17,"substance":18,"depth":19,"authority":20,"freshness":21,"relevant":22,"comment":23},22,24,19,14,8,1,"长期增温实验结合多尺度遥感，首次给出生物土壤结皮退化放大气候变暖的实证反馈，对全球旱地农业与气候模型修正具重要参考价值。",[25],{"name":10,"url":6},[27,28,29,30,31],"气候变化","遥感监测","生物土壤结皮","退化反馈","旱地农业",0,"10.1038\u002Fs43247-026-03874-5",{"doi":33,"openalex_id":35,"authors":36,"venue":10,"cited_by_count":32,"oa_url":75,"card":76,"direction":82,"ingested_from":83},"W7212387420",[37,40,43,45,47,50,53,55,58,61,64,67,69,72],{"name":38,"orcid":39},"William K. Smith","https:\u002F\u002Forcid.org\u002F0000-0002-5785-6489",{"name":41,"orcid":42},"Miguel L. Villarreal","https:\u002F\u002Forcid.org\u002F0000-0003-0720-1422",{"name":44,"orcid":9},"Cara Lauria",{"name":46,"orcid":9},"Willliam A. Rutherford",{"name":48,"orcid":49},"Stefanie Herrmann","https:\u002F\u002Forcid.org\u002F0000-0002-4069-2019",{"name":51,"orcid":52},"Victoria Scholl","https:\u002F\u002Forcid.org\u002F0000-0002-2085-1449",{"name":54,"orcid":9},"Armin Howell",{"name":56,"orcid":57},"Mostafa Javadian","https:\u002F\u002Forcid.org\u002F0000-0001-7428-8869",{"name":59,"orcid":60},"Fujiang Ji","https:\u002F\u002Forcid.org\u002F0000-0003-4623-7487",{"name":62,"orcid":63},"Fangyue Zhang","https:\u002F\u002Forcid.org\u002F0000-0002-5479-6214",{"name":65,"orcid":66},"Matthew A. Burgess","https:\u002F\u002Forcid.org\u002F0000-0003-3487-4972",{"name":68,"orcid":9},"Raymond Kokaly",{"name":70,"orcid":71},"Benjamin Poulter","https:\u002F\u002Forcid.org\u002F0000-0002-9493-8600",{"name":73,"orcid":74},"Sasha C. Reed","https:\u002F\u002Forcid.org\u002F0000-0002-8597-8619","https:\u002F\u002Fwww.nature.com\u002Farticles\u002Fs43247-026-03874-5_reference.pdf",{"tldr":77,"method":78,"finding":79,"direction":80,"opportunity":81},"通过长期增温实验与多尺度遥感，揭示生物土壤结皮退化加剧气候变暖的正反馈。","美国犹他州20年野外增温与降雨操控实验，结合多尺度遥感监测。","结皮由苔藓向浅色蓝藻转变，光合潜力降6.3%，地表温度升0.3°C，形成变暖放大反馈。","农业遥感与作物表型","可将该反馈机制纳入旱地碳-气候模型，并探索遥感监测结皮退化的早期预警指标。","智慧农业 \u002F 农业物联网","openalex","2026-09-14T23:30:08.186782Z"]