| 中国杉连作对土壤肥力的影响 |
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| 作者姓名： | DING Ying-Xiang CHEN Jin-Lin |
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| 作者单位： | NanjingForestryUniversity,Nanjing210037,China |
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| 基金项目： | *1Project supported by the National Natural Science Foundation of China. |
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| 摘 要： | 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 Ca^2 ,exchangeable Mg^2 and A1-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 preceduing 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 step 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.
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| 关 键 词： | 杉木 连作 土壤肥力 土壤退化 |
Effect of continuous plantation of Chinese fir on soil fertility |
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| DING Ying-Xiang,CHEN Jin-Lin.Effect of continuous plantation of Chinese fir on soil fertility[J].Pedosphere,1995,5(1):57-66. |
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| Authors: | DING Ying-Xiang and CHEN Jin-Lin |
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| Institution: | NanjingForestryUniversity,Nanjing210037,China |
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| 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 Ca^2 ,exchangeable Mg^2 and A1-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 preceduing 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 step 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. |
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| Keywords: | Chinese fir continuous plantation slash burning soil deterioration soil fertility |
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