摘要
54个晋冀低山丘陵区人工和人工扰动植被表土花粉样品分析表明:花粉组合以草本植物花粉(74.5%)为主,乔木花粉含量低于20%。人类活动较强的农田以谷物禾本科、蒿属和藜科花粉为主,人类活动较弱的荒地以蒿属、藜科和杂草禾本科花粉为主。人类活动强度不同,指示种不同,孢粉浓度亦不同;农田指示种为谷物禾本科、葡萄科和胡桃科,孢粉浓度约4380粒/g;而蒿属、蓼科和蔷薇科则为荒地指示种,孢粉浓度约10983粒/g。农作物种植方式不同,谷物禾本科花粉含量不同,单一禾本科作物种植区谷物禾本科花粉含量(40.2%)高于多种作物混作区(18.8%)和荒地(3.8%)的含量。谷物禾本科含量的变化可以为利用化石花粉提取和检测人类活动信息提供依据,也可为利用地层中谷物禾本科花粉判断古代农业活动提供依据。
The pollen assemblages of 54 surface samples from human disturbed vegetation in hilly ar- eas of Shanxi and Hebei Provinces show that： Herbaceous pollen types are dominant in pollen assemblages （ average 74.5%） , arboreal pollen percentages are lower than 20%. Cereals, Artemisia, and Chenopodi- aceae are the major herbaceous pollen types in farmlands where human impacts are much stronger. While Artemisia, Chenopodiaceae and Poaceae are the major herbaceous pollen types in wastelands. Different hu- man activity intensities lead to different indicator species and different pollen concentrations. Cereals, Vi- taceae and Juglandaceae are the indicator pollen types of farmlands whose pollen concentrations are about 4380 grains/g, while Artemisia, Polygonaceae and Rosaceae are the indicator pollen types of wastelands whose pollen concentrations are about 10 983 grains/g. Different agricutural practices produce different pol- len types with different pollen content of cereals. The pollen percentages of cereals are higher （40.2%） in single cereal areas than those in mix-planted areas （18.8%） and wastelands （3.8%）. The pollen contents of cereals in different crops will give a reference to obtain the messages of human activities in lands as well as to distinguish the possible old cultivation methods.
出处
《古地理学报》
CAS
CSCD
北大核心
2014年第2期227-238,共12页
Journal of Palaeogeography：Chinese Edition
基金
中国科学院战略性先导科技专项(批准号:XDA05120202)
国家自然科学基金项目(批准号:41371215和41071132)
河北省科技厅科技支撑重点项目(批准号:13277611D)
河北省环境演变与生态建设重点实验室和河北省重点学科基金联合资助
关键词
农田
荒地
花粉组合
人类活动强度
山西省
河北省
farmlands, wastelands, pollen assemblages, human activity intensity, Shanxi Prov-ince, Hebei Province
