Soil nutrient data set of long-term observation samples by Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences from 2006 to 2022

Huanjiang Observation and Research Station for Karst Ecosystems of Chinese Academy of Sciences (Huanjiang Station) is an important long-term field observation and research station for agroecosystems in southwest karst area of China. It is an experimental sample site arranged according to CERN network monitoring standards. Since 2005, Huanjiang Station has carried out monitoring activities on water, soil, biology, meteorology and other environmental factors of the farmland ecosystem in the Karst cluster depression in accordance with the requirements of CNERN and CERN farmland ecosystem observation indicators. This dataset collected and collated soil nutrient data of 8 long-term monitoring sample sites in Huanjiang Station from 2006 to 2022, including 9 indexes such as soil organic matter, total nitrogen, total phosphorus, total potassium, available nitrogen, available phosphorus, rapidly available potassium, slow available potassium, and pH value, all of which were subject to data quality control and were accompanied by complete sample background information and analysis method records. The data of this dataset reflected the dynamic changes of soil conventional nutrient content of traditional representative crops such as early and late rice, corn, soybean, mulberry leaf and citrus in the karst peak cluster depression agricultural area in northwest Guangxi, and provided a reference basis for guiding agricultural production and cultivating soil fertility in the karst peak cluster depression.