Pedosphere 5(1): 57--66, 1995
ISSN 1002-0160/CN 32-1315/P
©1995 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Effect of continuous plantation of Chinese fir on soil fertility |
| DING Ying-Xiang and CHEN Jin-Lin |
| Nanjing Forestcy University, Nanjing 210037 (China) |
| ABSTRACT |
| The changes in soil fertility under continuous plantation of Chinese fir were studied by comparing soil samples from different forest stands: the first and second plantations of Chinese fir, evergreen broad-leaved forests, and clear-cut and burnt Chinese fir land located at Xihou Village, Nanping of Fujian Province. The soils were humic red soil originated from weathered coarse granite of the Presinian system. Soil pH, CEC, base saturation, exchangeable Ca2+, exchangeable Mg2+ and Al-P declined after continuous plantation of Chinese fir. The same trends were also found in the soils under broad-leaved stands and slash burnt lands. The explantation was that not merely the biological nature of the Chinese fir itself but the natural leaching of nutrients, soil erosion and nutrient losses due to clear cutting and slash burning of the preceding plantation caused the soil deterioration. Only some of main soil nutrients decreased after continuous plantation of Chinese fir, depending on specific silvicultural system, which was different from the conclusions in some other reports which showed that all main nutrients, such as OM, total N, available P and available K decreased. Some neccessary steps to make up for the lost base, to apply P fertilizer and to avoid buring on clear cut lands could be taken to prevent soil degradation and yield decline in the system of continuous plantation of Chinese fir. |
| Key Words: Chinese fir, continuous plantation, slash burning, soil deterioration, soil fertility |
| Citation: Ding, Y. X. and Chen, J. L. 1995. Effect of continuous plantation of Chinese fir on soil fertility. Pedosphere. 5(1): 57-66. |
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