During Holocene, Horqin sandy land had several periods of sandy land reduces affected by global climatic undulation, in which the first reduce period during warm time of Holocene profoundly influenced the Hongshan Culture in Xiliao River upstream.

• 摘要科尔沁沙地在全新世期间，受到全球气候波动的影响，有过多次沙漠化逆转期，其中发生在全新世大暖期的第一次大规模逆转对西辽河上游地区红山文化产生了深远的影响。