宁夏沙坡头野外观测站沙坡头地区初终霜日期

本数据记录了宁夏沙坡头荒漠化数据中2007年沙坡头地区初终霜日期的年份、初霜、终霜、无霜期等记录。宁夏沙坡头荒漠化数据主要包括：沙坡头月平均日照时数及日照率，沙坡头月平均气温及年较差，沙坡头四季的平均降水量及比例，沙坡头地区初终霜日期，沙坡头固定风沙土各土属表土，沙坡头风沙土各亚类或土属的物理及化学性质比较，沙坡头主要森林资源及固沙造林植物，沙坡头自然植被类型系统，黄河干流沙坡头水质监测及评价结果表，沙坡头不同年代人工植被固定沙丘生境变化，沙坡头研究区浅表层土壤物理化学特性等属性信息。

This dataset documents the year, first frost date, last frost date, frost-free period and other relevant records of Shapotou region in 2007, which are part of the desertification dataset of Shapotou, Ningxia.
The desertification dataset of Shapotou, Ningxia mainly covers the following attribute information:
1. Monthly average sunshine duration and sunshine percentage of Shapotou;
2. Monthly average air temperature and annual temperature range of Shapotou;
3. Average precipitation and its seasonal proportion in Shapotou;
4. First and last frost dates in Shapotou area;
5. Topsoil properties of each soil genus of fixed aeolian sandy soil in Shapotou;
6. Comparisons of physical and chemical properties between different soil subgroups or genera of aeolian sandy soil in Shapotou;
7. Main forest resources and sand-fixing afforestation plant species in Shapotou;
8. Natural vegetation type classification system of Shapotou;
9. Water quality monitoring and evaluation result tables for the Shapotou section of the mainstream Yellow River;
10. Changes in habitats of fixed dunes restored by artificial vegetation in different decades in Shapotou;
11. Physical and chemical properties of shallow surface soil in the Shapotou research area.