Effects of tending practices on nutrient dynamics in a young stand of sugi (Cryptomeria japonica) and hinoki (Chamaecyparis obtusa).
Effects of tending practices on nutrient dynamics in a young stand of sugi (Cryptomeria japonica) and hinoki (Chamaecyparis obtusa).
复制标题
抚育措施对杉树（Cryptomeria japonica）和扁柏（Chamaecyparis obtusa）幼林养分动态的影响。
DOI：
10.1016/0378-1127(90)90139-3
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发表时间：
1990
影响因子：
3.7
通讯作者：
Y. Aiba
中科院分区：
文献类型：
--
作者：
K. Haibara;Y. Aiba
本文研究了施肥、除草和修枝三种营林措施对幼龄针叶林养分流失和循环的影响，并与成林作了比较，在此基础上讨论了三种营林措施对立地生产力的影响。除草和修剪提供的有机质和营养物质的数量是大的，这两个操作有一个有益的影响，养分循环和网站生产力在树冠封闭前的年轻的立场。蒸散量估计是高的年轻的立场冠封闭前和水分损失（降水-排放）修剪后减少到约25%的prepruning值。施肥对河流水质的影响仅限于皆伐后的一段时间。除了皆伐和种植后的前3年外，溪流养分输出与溪流流量之间存在正相关关系。为了保持立地生产力，防止河流排放中过多的养分流失是很重要的。
The effects of three silviculture practices, fertilization, weeding, and pruning, on nutrient losses and cycling were investigated for 8 years in a young coniferous stand and compared with an established stand. On the basis of the results, the effects of three intensive operations on site productivity are discussed. The quantities of organic matter and nutrients supplied by weeding and pruning were large, these two operations having a beneficial effect on nutrient cycling and site productivity before crown closure in the young stand. Evapotranspiration was estimated to be high in the young stand before crown closure and water loss (precipitation - discharge) decreased after pruning to approximately 25% of the prepruning value. The effects of fertilization on stream-water quality were restricted to the period directly after clearcutting. There was a positive relationship between stream nutrient export and stream discharge except for the first 3 years after clearcutting and planting. To maintain site productivity it is important to prevent excess nutrient loss in stream discharge.