Biocrust as one of multiple stable states in global drylands.
Biocrust as one of multiple stable states in global drylands.
复制标题
生物结皮是全球旱地的多个稳定状态之一
DOI:
10.1126/sciadv.aay3763
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发表时间:
2020-09
期刊:
影响因子:
13.6
通讯作者:
Zhao C
中科院分区:
文献类型:
--
作者:
Chen N;Yu K;Jia R;Teng J;Zhao C
Biocrust alone can be a stable state besides bare soil and vascular plant in global drylands. Biocrusts cover ~30% of global drylands with a prominent role in the biogeochemical cycles. Theoretically, biocrusts, vascular plants, and bare soil can represent multiple stable states in drylands. However, no empirical evidence for the existence of a biocrust stable state has been reported. Here, using a global drylands dataset, we found that biocrusts form an alternative stable state (biocrust cover, ~80%; vascular cover, ≤10%) besides bare soil (both biocrust and vascular cover, ≤10%) and vascular plants (vascular cover, >50%; biocrust cover, ~5%). The pattern of multiple stable states associated with biocrusts differs from the classic fold bifurcation, and values of the aridity index in the range of 0 to 0.6 define a bistable region where multiple stable states coexist. This study empirically demonstrates the existence and thresholds of multiple stable states associated with biocrusts along climatic gradients and thus may greatly contribute to conservation and restoration of global drylands.
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影响因子:
16.6
作者:
Couradeau E;Karaoz U;Lim HC;Nunes da Rocha U;Northen T;Brodie E;Garcia-Pichel F
通讯作者:
Garcia-Pichel F
影响因子:
2.9
作者:
Rietkerk, M;Boerlijst, MC;de Roos, AM
通讯作者:
de Roos, AM
影响因子:
4.1
作者:
Biggs, Reinette;Peterson, Garry D.;Rocha, Juan C.
通讯作者:
Rocha, Juan C.
影响因子:
4.9
作者:
Jia, Rongliang;Chen, Ning;Zhao, Changming
通讯作者:
Zhao, Changming
影响因子:
18.3
作者:
Elbert, Wolfgang;Weber, Bettina;Poeschl, Ulrich
通讯作者:
Poeschl, Ulrich