Plant diversity of the Tianshui Basin in the western Loess Plateau during the mid-Holocene - Charcoal records from archaeological sites
Plant diversity of the Tianshui Basin in the western Loess Plateau during the mid-Holocene - Charcoal records from archaeological sites
复制标题
DOI：
10.1016/j.quaint.2013.05.014
复制
发表时间：
2013-10
影响因子：
2.2
通讯作者：
N. Sun;Xiaoqiang Li;J. Dodson;Xinying Zhou;Keliang Zhao;Qingjiang Yang
中科院分区：
文献类型：
--
作者：
N. Sun;Xiaoqiang Li;J. Dodson;Xinying Zhou;Keliang Zhao;Qingjiang Yang
评估温度升高的潜在影响需要检查包含类似物的可靠古记录。中全新世考古遗址的化石炭（炭）记录可以提供气候变化影响的古类比。西山坪遗址和大地湾遗址是黄土高原西部天水盆地新石器文化时期不断发展的遗址。采用浮选法回收了24个化石炭样品。每个样品中至少有100个片段进行了检查，并按照标准程序对这些片段进行了鉴定，结果用于重建5200和4300 cal BP之间的植被和植物多样性，这是该地区的温暖时期。西山坪和大地湾遗址的木炭证据证实，木本植物广泛存在，包括温带类群如桦木、榆、栎、鹅耳枥、槭、榛和稠李，以及典型的亚热带类群如竹亚科、枫香、锥属、黄杉和杜仲。化石炭的组合特征表明，该区曾存在北亚热带万年青落叶阔叶混交林。这是一个更广泛的木本植物比目前在天水盆地。这得出的结论是，季风降水的变暖和增加导致南部植被区向北转移。黄土高原西部天水盆地5200 ~ 4300 calBP天然植物多样性也大于现今。
Assessing the potential impact of increased temperature needs examination of robust palaeorecords that contain analogues. The fossil charcoal (anthracological) records from the mid-Holocene archaeological sites can provide palaeo-analogues on the impacts of climate change. The Xishanping and Dadiwan sites were continuously developed during the Neolithic Culture in the Tianshui Basin, western Loess Plateau. A total of 24 samples of fossil charcoal were recovered using a floatation method. At least 100 fragments were examined from each sample, and these fragments were identified following standard procedures, and the results were used to reconstruct the vegetation and plant diversity between 5200 and 4300 cal BP, which was a warm period for the region. The charcoal evidence from the Xishanping and Dadiwan sites confirm that woody plants were widely available, including temperate taxa such asBetula,Ulmus,Quercus,Carpinus,Acer,CorylusandPadus, and typical subtropical taxa such as Bambusoideae,Liquidambar formosana,Castanopsis,Pseudotsugasinensis, andEucommia ulmoides. The assemblages of fossil charcoal show that mixed forests of north-subtropical evergreen and deciduous broadleaved trees existed. This is a broader range of woody plants than at present in the Tianshui Basin. This leads to the conclusion that the warmer and increasing monsoon precipitation resulted in a northward shift in the southern vegetation zones. And that the natural botanical diversity between 5200 and 4300 cal BP was also greater than at present in the Tianshui Basin, western Loess Plateau.