Abstract:
Xinjian County in southern Nanchang City is widely covered by desertified land that is composed of ancient sand and modern aeolian sediments. Based on the field investigation, this study selectd thick Houtian aeolian sediments in southern Xinjian County as our study objective to analyze the types and characteristic of overlying aeolian landform. Combined with quantitive analysis methods such as OSL dating, grain sizes and colorimetric parameters, the aesthetic characteristics of the aeolian geomorphological heritage in the humid, subtropical areas were discussed. The results show that the Houtian aeolian landform includes modern sand sediments and Late Quaternary paleo-sand sediments. Modern sand sediments began roughly 14 000 years ago and major landform consists mainly of vertical sand ridges, sand drift, braided sands, and flat sands. The Late Quaternary paleo-sand sediment started about 77 000 to 14 000 years ago and geomorphology mainly comprises slab-like crossbedding and rich stratigraphic sequences, which constitute specific geologic heritage with abundant paleo-ecological evolutionary data and are of important scientic value. The aeolian landform is characterized by the aesthetic characteristics of color, view, form, life and color beauty, and has good value of geoscience tourism development. The combination of qualitative evaluation and quantitative analysis can not only enrich the content of aeolian landscape aesthetic research, but also provide reference for the development of geoscientific tourism in the subtropical humid area.