地理学报 ›› 2010, Vol. 65 ›› Issue (11): 1345-1354.doi: 10.11821/xb201011004

• 气候环境变化 • 上一篇    下一篇

河北省中南部农田孢粉组合特征

庞瑞洺1,2, 许清海1,2,3, 丁伟1,2, 张生瑞1,2   

  1. 1. 河北师范大学资源与环境科学学院,石家庄050016;
    2. 河北省环境演变与生态建设实验室,石家庄050016;
    3. 兰州大学教育部西部环境重点实验室,兰州730000
  • 收稿日期:2010-06-10 修回日期:2010-07-24 出版日期:2010-11-20 发布日期:2010-11-20
  • 通讯作者: 许清海(1951-), 男, 研究员, 从事全球变化与第四纪孢粉学研究
  • 作者简介:庞瑞洺(1985-), 女, 河北保定人, 硕士, 主要从事孢粉学与全球变化研究
  • 基金资助:

    国家自然科学基金重点项目(40730103); 国家自然科学基金项目(40571166; 40672107); 河北省自然科学基金项目(D2008000186; D2009000300)

Pollen Assemblage of Farmlands in Central and Southern Hebei Province

PANG Ruiming1,2, XU Qinghai1,2,3, DING Wei1,2, ZHANG Shengrui1,2   

  1. 1. College of Resources and Environment of Hebei Normal University, Shijiazhuang 050016, China;
    2. Key Laboratory of Environmental Change and Ecological Development of Hebei Province, Shijiazhuang 050016, China;
    3. National Key Laboratory of Western China's Environmental System, Ministry of Education, Lanzhou University, Lanzhou 730000, China
  • Received:2010-06-10 Revised:2010-07-24 Online:2010-11-20 Published:2010-11-20
  • Supported by:

    Key Project of National Natural Science Foundation of China No.40730103; National Science Foundation of China No.40571166; No.40672107; Hebei Natural Science Foundation, No.D2008000186; No.D2009000300

摘要:

河北省中南部82 个农田表土花粉组合研究表明:农田花粉组合不仅有农作物花粉类型,也有临近山区的植物成分。山区农田乔木花粉含量与浓度高于平原,对平原的影响随距离增加而降低,距太行山0~50 km 松属花粉含量为20%~30%,50~100 km 为10%~20%,100~150 km 增至20%~30%,海滨区降至16%以下,平原中部含量增加可能与焚风效应有关;山区至平原乔木花粉含量空间上的变化,可能类似于历史时期人类活动介入森林区后时间上的变化。山区和平原灌木花粉含量较低,但主要成分不同,山区以胡颓子科、榛属、虎榛子较常见,平原区蔷薇科、葡萄科花粉相对较多。平原区草本花粉含量高出山区,其中藜科花粉由山区向平原逐渐增高,可能反映人类活动不断增强的特征。山区中华卷柏含量高于平原,但平原区高达7%。中华卷柏不易被风搬运,推测平原区农田的中华卷柏可能是平原沉积时由河流从山区搬运而来。相同类型农业单元乔木、灌木花粉和蕨类百分比山区一般高于平原,草本低于平原;不同类型农业单元乔木、草本百分比平原区相近,山区差异较大。山区乔木花粉含量差异主要受草本类型影响,平原区草本花粉组合差异主要是农作物花粉(人工禾本科、十字花科) 含量的差异;不同农业单元孢粉浓度差异主要为草本花粉浓度不同。

关键词: 农田, 人类活动, 花粉组合, 山区, 平原, 河北省

Abstract:

The study on 82 surface soil pollen samples from different types of cultivated vegetations in central and southern parts of Hebei Province indicates that the pollen assemblages from farmlands on the plain have not only their own plant types, but also the pollen components from the nearby mountains. Arboreal pollen percentages and concentrations (dominated by Pinus) of samples from the farmlands in the mountains are higher than those on the plains, and it reduces gradually with the increasing distance away from the mountains. Taking Pinus in Taihang Mountains for example, its content is 20%-30%, 10%-20%, 20%-30% and below 16% respectively for the samples from the area of 0-50, 50-100, 100-150 and more than 150 km away from the east of Taihang mountains. The increase of Pinus proportion in the central plains is probably related to the fohn effect. The spatial variation of AP from mountains to plains in Hebei Province may be similar to the historical change of forests clearance by human activities in early period. Shrubby pollen proportion is small both in mountains and in plains, but their major components are different. Elaeagnaceae, Corylus, Ostryopsis and Oleaceae are common in mountain farmlands, while there are relatively high contents of Rosaceae and Vitaceae in plains, Herb content in plains (about 60%) is 15% higher than that in mountains, among which the Cereals and Cruciferae pollen percentages are 5% and 2% higher respectively. Artemisia pollen percentage on the plains is lower than that in the mountains. Since the human activities are weaker in mountains compared with that on the plains, the general trend is that Chenopodiaceae pollen increases from mountains to plains gradually, reflecting the raising intensity of human activities. The fern spores of Selaginella sinensis in mountains are higher than that on the plains, which is about 7%. The fern spores of Selaginella sinensis are not prone to be spread by wind, indicating that those in the surface soil of the plains may be carried by currents from mountains during the deposition of the plains.

Key words: farmlands, human activity, pollen assemblages, mountain, plain, Hebei Province