Catchment instability and Asian summer monsoon variability during the early Holocene in southwestern China
2012; Wiley; Volume: 42; Issue: 1 Linguagem: Inglês
10.1111/j.1502-3885.2012.00287.x
ISSN1502-3885
AutoresCharlotte G. Cook, Richard T. Jones, Chris Turney,
Tópico(s)Archaeology and ancient environmental studies
ResumoA high‐resolution palaeorecord (06SD) from L ake S hudu, Y unnan P rovince, southwestern C hina indicates a broad trend towards catchment stability, enhanced organic productivity and regional forest‐cover expansion during the early to mid H olocene. These changes are congruent with a shift to warm, wet climatic conditions, probably driven by orbitally forced A sian summer monsoon strengthening. Intriguingly, however, during the very early H olocene ( c. 10.7 to 10.1 cal. ka BP ), there is a prominent reversal in this trend, suggesting a weakening A sian summer monsoon. The precise cause and extent of this event remain unclear but demonstrate the urgent need for more comprehensive dating of records from across the region to test for synchroneity and examine climatic forcing mechanisms.
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