Holocene negative coupling of summer temperature and moisture availability over southeastern arid Central Asia

Holocene Grassland Fire Dynamics and Forcing Factors in Continental Interior of China

“…Due to high water content and loosely compacted peat, the top 50.25‐cm section was not totally recovered. The remaining 70.6‐cm section consisted of two sedimentary units, brownish‐black peat from 50.25 to 85 cm and blackish‐gray silt from 85 to 126.75 cm (Li et al, 2020). Eight samples (three bulk organic samples and five pollen residue samples) were utilized for accelerator mass spectrometry (AMS) dating (Li et al, 2020).…”

“…According to meteorological data from the local weather station, mean annual precipitation is 225 mm, and mean annual temperature is 3.9°C. Modern vegetation surrounding the wetland is intermontane steppe dominated by communities of Poaceae and Artemisia (Li et al, 2020). Sedges and reeds are major plant taxa within the wetland.…”

“…A 126.75‐cm‐long sediment sequence (WQ‐1) was extracted from the wetland center (44°97′N, 80°11′E, 1300 m a.s.l.) in September 2017 (Li et al, 2020). Due to high water content and loosely compacted peat, the top 50.25‐cm section was not totally recovered.…”

“…The remaining 70.6‐cm section consisted of two sedimentary units, brownish‐black peat from 50.25 to 85 cm and blackish‐gray silt from 85 to 126.75 cm (Li et al, 2020). Eight samples (three bulk organic samples and five pollen residue samples) were utilized for accelerator mass spectrometry (AMS) dating (Li et al, 2020). The 14 C dates were calibrated to calendar years based on the IntCal13 data set (Reimer et al, 2013).…”

“…The age‐depth model was established with the Bacon package (Blaauw & Christen, 2011). The high‐resolution eight AMS 14 C dates (sampled intervals between 10.25 and 18.75 cm) are in a successively linear sequence (Li et al, 2020), and show that the core probably covers the last ca. 10,300 years (Table S1 & Figure S1).…”