摘要
喀斯特石漠化地区6个不同植被类型的25个表土和苔藓样品的孢粉分析表明:(1)研究区植物孢粉共由47科属组成,以草本和蕨类植物占据优势,含量为23.62%～76.47%,其次是乔木[主要为马尾松(Pinus masso-niana)],含量为17.73%～74.05%,灌木植物花粉含量最低,为0～12.50%,显示该区植被退化严重;(2)研究区不同植被类型的表土孢粉组合差别明显,与其相应的实际植被情况大致相同,基本反映了石漠化地区现代植被的基本状况,表明孢粉可以为该区恢复和重建自然生态环境提供参考性依据。
The pollen analysis of 25 topsoil and mosses samples under six typical types of vegetations in the Karst rocky desertification area showed that：（1） 47 pollen taxes are recorded totally,among which,herbs and ferns are dominate with 23.62%-76.47%,then the trees（mainly Pinus massoniana） with 17.73%-74.05%,and the shrub pollen is only about 0-12.50%,indicating the character of a serious degradation of local vegetation;（2） Pollen assemblages are obvious differentiation under different vegetations,which corresponding to the actual vegetation and reflecting the present conditions of the modern vegetation in the rocky desertification area,indicating pollen analysis can give a reference to the rehabilitation and reconstruction of natural environment in the study area.
出处
《地理科学》
CSCD
北大核心
2011年第6期758-763,共6页
Scientia Geographica Sinica
基金
国家"十一五"科技支撑计划项目(2006BAC01A16)
重庆市自然科学基金重点项目(CSTC2009BA0002)
国家林业局948项目(2009-4-20)
中国地质科学院岩溶地质研究所岩溶动力学重点实验室开放课题基金项目(KDL2008-15)共同资助
关键词
表土孢粉组合
石漠化
现代植被
重庆南平
pollen assemblages in topsoil
rocky desertification
modern vegetation
Nanping Town in Chongqing
