崆峒山风景名胜区旅游者人口学特征及行为研究

本文结合崆峒山风景名胜区旅游者进行的问卷调查,利用excel软件和Spss社会调查分析软件对崆峒山旅游者的人口学特征及旅游行为进行了初步的分析,其中人口学特征包括性别构成、年龄构成、职业构成、月收入构成等,旅游行为包括旅游目的的选择、旅游交通方式的选择、旅行方式的选择等,这两方面的研究能为崆峒山风景名胜区旅游发展提供科学依据。     

High lake levels on Alxa Plateau during the Late Quaternary

Field investigations including lake shoreline measurement and ¹⁴C chronology have been carried out on the Alxa Plateau to better understand the formation and evolution of the high lake levels in northwest China during the late Pleistocene. Comprehensive field investigations show that there are at least ten shorelines at different elevations at Juyan Lake, at least four on the northwest side of the Jilantai Salt Lake, and nine shorelines and one terrace on the northeast margin of Zhuye Lake. Stratigraphic correlations and chronological evidence indicate that the paleo-lakes have the highest lake levels in Marine Isotope Stage (MIS) 3. Though the optically stimulated luminescence (OSL) results which have been reported by some scholars do not support this view, the fact that the paleo-lakes have the highest lake levels in MIS 3 can not be denied. Differences between OSL and ¹⁴C results from this work might indicate that high lake levels existed on the Alxa Plateau during two different periods. It also suggests that the high lake levels may exist in both MIS 5 and early MIS 3. This paper also provides the basic hydrological information for further water resources research in this arid region.