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| 中国南方天然常绿阔叶林枯叶分解的养分元素变化 | |
| 引用本文： | 片桐成夫,李昌华,川口英之,長山泰秀.中国南方天然常绿阔叶林枯叶分解的养分元素变化[J].江西林业科技,2005(Z1). |
| 作者姓名： | 片桐成夫 李昌华 川口英之 長山泰秀 |
| 作者单位： | 1. 日本岛根大学生物资源科学部,松江市690-8504 2. 中国科学院自然资源综合考察委员会,北京,100101 3. 日本京都大学农学部,京都市606-01 |
| 摘 要： | 中国南部的天然常绿阔叶林中,不同的初始条件下研究了栲树叶的重量损失和养分释放.对构成森林的13个树种的叶子也用枯叶袋法进行了研究.两年后栲树叶的分解率为53％～67％,其他13个种的叶分解率为59％～96％.两年间落叶树种叶子的重量损失大于常绿树种.分解叶的氮磷含有率随实验时间逐渐增加,而钾、钠、钙和镁的含有率却在降低.氮和磷的释放慢于更具活动性的元素,如钾、钠、钙和镁.分解率与最初的氮和磷的含有率成正相关. |
| 关 键 词： | 分解 养分元素 常绿阔叶林 中国江西 |
Changes of Nutrient Elements in Decomposing Leaf Litter in a Natural Evergreen Broad-leaved Forest in Southern China |
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| Shigeo Katagiri , Li Changhua , Hideyuki Kawaguchi , Yasuhide Nagayama.Changes of Nutrient Elements in Decomposing Leaf Litter in a Natural Evergreen Broad-leaved Forest in Southern China[J].Jiangxi Forestry Science and Technology,2005(Z1). | |
| Authors: | Shigeo Katagiri Li Changhua Hideyuki Kawaguchi Yasuhide Nagayama |
| Institution: | Shigeo Katagiri1,Li Changhua2,Hideyuki Kawaguchi3,Yasuhide Nagayama1 |
| Abstract: | Weight losses and nutrient releases of Castanopsis fargesii leaves in different initial conditions were examined in a natural evergreen broad-leaved forest in southern China.Leaves from thirteen species of which the forest was composed were also examined by litter bag method.The decomposition rates of C.fargesii leaves were 53%~67% after two years.Decomposition rates for leaves of the other thirteen were 59%~96% after two years.Weight losses of deciduous leaves were larger than those of evergreen leaves during two years.Nitrogen and phosphorus concentrations in decomposing leaves increased gradually throughout the experimental period,whereas,potassium,sodium,calcium and magnesium concentrations decreased.Nitrogen and phosphorus was released more slowly than mobile elements such as potassium,sodium,calcium and magnesium.Decomposition rates were positively correlated with initial nitrogen and phosphorus content. |
| Keywords: | Decomposition Nutrient release Evergreen broad-leaved forest China |
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