2020年南岭山地典型森林生态系统土壤养分数据集

Abstract

Soil nutrients are an important component of forest ecosystems, an important carrier for maintaining the survival and development of animals and plants, and a foundation for normal plant growth. They play an important role in soil nutrient cycling and global climate change. Located in the core area of the southern hilly and mountainous area in the national ecological security strategic pattern of "two screens and three belts", Nanling Mountains are an important ecological barrier in Southern China. Due to varying degrees of damage in recent years, ecosystems in Nanling Mountains have proven to be highly sensitive to climate change. It has attracted significant attention from numerous scholars. The estimation of soil nutrient reserves and spatial distribution characteristics have emerged as prominent areas of research focus within this region. However, the absence of data sharing and the limited availability of measured data stand as significant factors contributing to the uncertainty of the research results. In 2020, we carried out standardized field survey and test effort of soil sample collection for ancient woodland in five typical forest ecosystems, namely, valley tropical and subtropical moist broadleaf forests (<800 m), mountain tropical and subtropical moist broadleaf forests (800-1,200 m), evergreen coniferous and broad-leaved mixed forest (1,200-1,500 m), mountaintop grassland (>1,500 m), and mountaintop evergreen broad-leaved dwarf forest (>1,500 m) in Nanling Mountain forest ecosystem. On this basis, we produced a dataset of soil nutrients of typical forest ecosystems in Nanling Mountain in 2020. This dataset includes soil nutrients (organic matter, total nitrogen, total phosphorus, and total potassium) and soil available nutrients (nitrate nitrogen, ammonium nitrogen, available phosphorus, and available potassium) of 0-20 cm topsoil in four quarters, with a view to providing valuable measured data for the study of soil nutrient cycling process in Nanling Mountains.Soil nutrients are an important component of forest ecosystems, an important carrier for maintaining the survival and development of animals and plants, and a foundation for normal plant growth. They play an important role in soil nutrient cycling and global climate change. Located in the core area of the southern hilly and mountainous area in the national ecological security strategic pattern of "two screens and three belts", Nanling Mountains are an important ecological barrier in Southern China. Due to varying degrees of damage in recent years, ecosystems in Nanling Mountains have proven to be highly sensitive to climate change. It has attracted significant attention from numerous scholars. The estimation of soil nutrient reserves and spatial distribution characteristics have emerged as prominent areas of research focus within this region. However, the absence of data sharing and the limited availability of measured data stand as significant factors contributing to the uncertainty of the research results. In 2020, we carried out standardized field survey and test effort of soil sample collection for ancient woodland in five typical forest ecosystems, namely, valley tropical and subtropical moist broadleaf forests (<800 m), mountain tropical and subtropical moist broadleaf forests (800-1,200 m), evergreen coniferous and broad-leaved mixed forest (1,200-1,500 m), mountaintop grassland (>1,500 m), and mountaintop evergreen broad-leaved dwarf forest (>1,500 m) in Nanling Mountain forest ecosystem. On this basis, we produced a dataset of soil nutrients of typical forest ecosystems in Nanling Mountain in 2020. This dataset includes soil nutrients (organic matter, total nitrogen, total phosphorus, and total potassium) and soil available nutrients (nitrate nitrogen, ammonium nitrogen, available phosphorus, and available potassium) of 0-20 cm topsoil in four quarters, with a view to providing valuable measured data for the study of soil nutrient cycling process in Nanling Mountains.