The impact of disturbance on detrital dynamics and soil microbial biomass of a Pinus kesiya forest in north-east India
The impact of disturbance on detrital dynamics and soil microbial biomass of a Pinus kesiya forest in north-east India
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DOI：
10.1016/s0378-1127(96)03801-7
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发表时间：
1996-11-15
影响因子：
3.7
通讯作者：
Tripathi, RS
中科院分区：
文献类型：
--
作者：
Arunachalam, A;Maithani, K;Tripathi, RS
以思茅松（Pinus kesiya Royle Ex.）印度东北部的戈登森林。干扰已经大大改变了群落结构，因此土壤养分状况。天然林隙的形成并没有导致凋落物和细根中的干物质、C和N积累或微生物养分浓度的显著变化。然而，有一个显着的减少，在所有功能参数的选择性登录网站和土壤堆。土壤微生物C、N、P含量在林下最高，在堆中最低。细根和微生物生物量对生态系统养分循环的贡献更大。氮矿化一般较高的干扰网站。
Detrital dynamics and microbial nutrient flux due to disturbances such as treefall and tree cutting were studied in a subtropical Pinus kesiya Royle Ex. Gordon forest in north-east India. Disturbance has substantially altered community structure, and therefore soil nutrient status. Natural gap formation has not resulted in significant changes in dry matter, C and N accumulation in litter and fine roots, or in microbial nutrient concentrations. However, there was a significant reduction in all functional parameters in the selectively logged site and soil heap. Soil microbial C, N and P were maximum in the understorey and minimum in the heap. Fine roots and microbial biomass contributed more to nutrient recycling in the ecosystem. N-mineralization was generally higher in the disturbed sites.