PDF
Full
Outline
To explore how primary forest conversion affects soil nitrogen (N) fractions, this study selected a primary evergreen broad-leaved forest and a converted Cunninghamia lanceolata plantation, an orchard (Citrus reticulata or Actinidia chinensis), a sloping cropland, and a paddy with similar geographical background conditions and clear land use history in northwestern Hunan. The physicochemical and biochemical properties of 0-20 cm soil layer were analyzed to study the responses of N fraction content and the related enzyme activities in the red soil derived from slate to the primary forest conversion. Primary forest conversion significantly reduced nitrogen components, associated enzyme and protein content by 15.83% to 87.36%, 20.04% to 39.15% and 30.97% to 66.18% in the red soil derived from slate. The soil dissolved organic N, microbial biomass N, and nitrate N showed higher response ratios than the total N in soil, sensitively indicating the short-term changes of total N in the red soil derived from slate. The primary forest conversion to plantation showed lower reductions in content of N fractions and activities of associated enzymes in the red soil derived from slate than the primary forest conversion to other land use types, demonstrating the preservation of soil N content and the stabilization of associated enzymes. The conversion of primary forest to other land uses led to a decreasing trend in the content of N fractions and activities of related enzymes in the red soil derived from slate, suggesting the negative effect of primary forest conversion on soil health.
PDF
48
25
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
