Sediment and wood accumulations in humid tropical headwater streams: Effects of logging and riparian buffers
Sediment and wood accumulations in humid tropical headwater streams: Effects of logging and riparian buffers
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DOI：
10.1016/j.foreco.2005.12.016
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发表时间：
2006-03-15
影响因子：
3.7
通讯作者：
Sasaki, S
中科院分区：
文献类型：
--
作者：
Gomi, T;Sidle, RC;Sasaki, S
沉积物，木材和碎屑（树叶和小树枝）的积累量进行了检查，在四个源头支流进行不同的治疗（未记录，记录与河岸缓冲区，记录与没有缓冲区）16和40个月后，木材采伐在武吉塔雷克实验流域，马来西亚半岛。来自山坡伐木道和滑道的泥沙输运导致河道中有大量泥沙储存。河岸储备似乎减轻伐木对溪流的影响，但是，更多的沉积物被发现在一个支流通道与一个20米的缓冲区比一个未记录的通道，因为附近的一些道路和滑道连接到流。沉积物储存在渠道下降后40个月内记录在集水区和没有河岸缓冲区。植被恢复的滑道和伐木道路减少了沉积物的供应和交付。大木材的体积是1.5至2倍，在流中没有河岸储备比流的未记录集水区或流与河岸缓冲区。在2001年和2003年的流之间的碎石堆积没有一致的变化，虽然更多的碎石是在2003年所有的流。伐木的影响和河岸缓冲区的有效性似乎取决于山坡和河源溪流之间的水文连接。(c)2005 Elsevier B.V.保留所有权利。
The amount of sediment, wood, and detritus (leaves and small branches) accumulations were examined in four headwater tributaries subjected to different treatments (unlogged, logged with riparian buffer, and logged with no buffer) 16 and 40 months after timber harvesting in the Bukit Tarek Experimental Watershed, Peninsular Malaysia. Sediment transport from hillslope logging roads and skid trails resulted in large sediment storage in the stream channels. Riparian reserves appear to mitigate logging impacts to streams; however, more sediment was found in a tributary channel with a 20-m buffer than an unlogged channel because some of the nearby roads and skid trails were connected to the stream. Sediment storage in channels declined within 40 months after logging in catchments with and without riparian buffers. Vegetation recovery on skid trails and logging roads reduced both sediment supply and delivery. The volume of large wood was 1.5 to 2-times greater in the stream without riparian reserves than the stream of an unlogged catchment or in a stream with a riparian buffer. No consistent change in detritus accumulations was found among streams in 2001 and 2003, although more detritus was present in 2003 in all streams. The effects of logging and the effectiveness of riparian buffers appear to depend on the hydrologic connections between hillslopes and headwater streams. (c) 2005 Elsevier B.V. All rights reserved.