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Position: Home > Articles > Spatial Pattern of Litterfall Input and Its Correlation with Soil Nutrients in the Montane Moist Evergreen Broad-leaved Forest in Ailao Mountains,Yunnan Journal of Fujian Forestry Science and Technology 2017 (2) 13-18

中山湿性常绿阔叶林凋落物的空间输入格局

作  者:
乔璐;阮桢媛;白冰;唐宗英
单  位:
云南林业职业技术学院
关键词:
凋落物;空间异质性;养分输入;中山湿性常绿阔叶林
摘  要:
在云南景东哀牢山北段西坡徐家坝地区中山湿性常绿阔叶林典型地段6 hm~2大样地内设置240个凋落筐,研究凋落物的空间输入格局,及地上凋落物养分输入与土壤养分含量的相关关系。结果表明:该森林单位面积凋落物输入量极高,达到859.40 g·m~(-2)·a~(-1),与南美雨林、鼎湖山季风常绿阔叶林相当;碳、氮、磷、木质素的输入比例高于澳大利亚北皇后岛的湿润雨林。在本研究取样尺度上,仅凋落物钙、镁元素表现出空间自相关性;地上凋落物钙、镁输入量与土壤钙、镁含量呈显著正相关。中山湿性常绿阔叶林典型地段内凋落物产量极高,但较慢的分解速率减少了CO2的释放,有利于固定更多的碳元素。凋落物钙、镁元素输入的空间格局与土壤钙、镁含量的空间分布格局基本一致,意味着土壤养分含量与植物养分输入之间可能存在正反馈趋势。
译  名:
Spatial Pattern of Litterfall Input and Its Correlation with Soil Nutrients in the Montane Moist Evergreen Broad-leaved Forest in Ailao Mountains,Yunnan
作  者:
QIAO Lu;RUAN Zhenyuan;BAI Bing;TANG Zongying;Yunnan Forestry Technological College;
关键词:
litterfall;;spatial heterogeneity;;nutrient input;;montane moist evergreen broad-leaved forest
摘  要:
In order to explore litterfall spatial distribution pattern and correlation between litterfall nutrient input and soil nutrient contents,240 litter traps were arranged into typical area of montane moist evergreen broad-leaved forest at Xujiaba district in Ailao Mountains.The results indicated that litter mass per area of this forest was 859.40 g·m~(-2)·a~(-1),it was quite high and even equivalent to the litter mass of rainforest in South American and monsoon evergreen broad-leaved forest in Dinghu Mountains,input ratios of C,N,P and lignin in this study were higher than those in North Queensland Australia.On the present scale,only litter Ca and Mg inputs exhibited spatial autocorrelation,which were positively correlated with soil nutrient contents.Litter mass in this study is quite high but slower decay rate facilitated carbon sequestration.Spatial patterns of litter Ca and Mg input were in accordance with those of soil Ca and Mg contents,which may imply positive feedback between soil nutrient contents and plant nutrient inputs.

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