Pedosphere 5(1): 45--55, 1995
ISSN 1002-0160/CN 32-1315/P
©1995 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Effects of different types of Chinese fir stands on nutrient status of soils |
| YU Yuan-Chun and ZHANG Huan-Chao |
| Nanjing Forestry University, Nanjing 210037 (China) |
| ABSTRACT |
| The effects of different types of Chinese fir stand, including those with various composition (pure and mixed), in various cropping systems (first and continuous cropping system) and at different ages, on the nutrient status of soils in the hilly regions of southern Anhui Province were studied by means of ecological sequential comparison on the basis of similar climate and soil type. The work was carried out in the Xiaoxi Forest Farm of Jingxian County and the Caijiaqiao Forest Farm of Jingde County, where the soil is parayellow soil derived from phyllite and sandstone. The results revealed that with the increase of age, Chinese fir pure stand could accumulate organic matter and nitrogen in the soil but it resulted in decreasing of soil pH and base ions (especially Ca2+) compared to its mixed stand with broad-leaf trees such as Chinese sassafras. In order to improve the soil fertility, it would be better to mix Chinese fir with broad-leaf trees when afforestation. In the management of Chinese fir pure stand, base compounds and phosphates should be added to the soil for maintaining soil fertility and raising forest productivity. |
| Key Words: broad-leaf tree, Chinese fir, mixed stand, soil nutrient status |
| Citation: Yu, Y. C. and Zhang, H. C. 1995. Effects of different types of Chinese fir stands on nutrient status of soils. Pedosphere. 5(1): 45-55. |
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