It is a terrain with climate characteristics that are completely different from typical deserts, although it still belongs to arid areas. This type of desert area has relatively high precipitation, but the evaporation rate is still low, allowing water to be retained in the soil and supporting more abundant vegetation growth. Climate conditions are typically influenced by nearby oceans or lakes, which provide the necessary humidity and precipitation. Typical features include seasonal floods, dense vegetation cover, and diverse wildlife populations. Although the precipitation is higher than typical deserts, it is still a fragile ecosystem that is vulnerable to the impacts of climate change and human activities.

It is a natural landscape shaped by extreme arid climate, characterized by scarce precipitation, high evaporation rate, sparse vegetation, and poor soil. Distributed worldwide, from tropical to temperate regions, including the Sahara Desert, Arabian Desert, Gobi Desert, and the Great Sandy Desert in Australia. The formation is usually related to geographical location, climatic conditions, and geological history. In tropical regions, deserts are often formed due to the influence of high-pressure zones, while in temperate regions, it may be due to terrain blocking the entry of moisture. The earth's surface is often composed of sand, gravel, or saline alkali land, forming different landforms such as sand dunes, gravel deserts, or salt deserts under the action of wind.