Pollen-recorded climate changes between 13.0 and 7.0 ^14C ka BP in southern Ningxia, China

A pollen record from Haiyuan section in the southern part of Ningxia revealed a detailed history of vegetation variation and associated climate changes during the period from~13.0 to~7.0 14 C ka BP.A steppe landscape under a moderately dry(and probably cool)condition(~12.7-~12.1 14 C ka BP)was replaced by a coniferous forest dominating the landscape under a generally wet climate from~12.1 to ~11.01 4C ka BP.This generally wet period,corresponding to the European B?lling/All?rod period,can be divided into three stages:a cool and wet stage between~12.1 and~11.4 14 C ka BP,a mild and rela- tively dry stage between~11.4 and~11.2 14 C ka BP,and a mild and wet stage between~11.2 and~11.0 14 C ka BP.The coniferous forest-dominated landscape was then deteriorated into steppe landscape (~11.0-~10.6 14 C ka BP)and further into a desert steppe landscape from~10.6 to~9.8 14 C ka BP,being correspondent to the European Younger Dryas period.After a brief episode of a cool and wet climate (~9.8-~9.6 14 C ka BP),a relatively mild and dry condition prevailed during the early Holocene(~9.6- ~7.6 14 C ka BP)and then a warm and humid climate started the mid-Holocene(~7.6-~7.2 14 C ka BP).

Pollen-recorded climate changes between 13.0 and 7.0 14C ka BP in southern Ningxia,China

A pollen record from Haiyuan section in the southern part of Ningxia revealed a detailed history of vegetation variation and associated climate changes during the period from ~13.0 to ~7.0 ¹⁴C ka BP. A steppe landscape under a moderately dry (and probably cool) condition (~12.7－~12.1 ¹⁴C ka BP) was replaced by a coniferous forest dominating the landscape under a generally wet climate from ~12.1 to ~11.0 ¹⁴C ka BP. This generally wet period, corresponding to the European Bölling/Allërod period, can be divided into three stages: a cool and wet stage between ~12.1 and ~11.4 ¹⁴C ka BP, a mild and relatively dry stage between ~11.4 and ~11.2 14C ka BP, and a mild and wet stage between ~11.2 and ~11.0 ¹⁴C ka BP. The coniferous forest-dominated landscape was then deteriorated into steppe landscape (~11.0－~10.6 ¹⁴C ka BP) and further into a desert steppe landscape from ~10.6 to ~9.8 ¹⁴C ka BP, being correspondent to the European Younger Dryas period. After a brief episode of a cool and wet climate (~9.8－~9.6 ¹⁴C ka BP), a relatively mild and dry condition prevailed during the early Holocene (~9.6－~7.6 ¹⁴C ka BP) and then a warm and humid climate started the mid-Holocene (~7.6－~7.2 ¹⁴C ka BP).