A preliminary study on in-stream large woody debris in broadleaved and Korean pine forest in Changbai Mountain, Northeast China  

长白山二道白河溪流大木质物残体的初步研究(英文)

作　　者：邓红兵[1] 王青春[1] 王庆礼[1] 

机构地区：[1]中国科学院沈阳应用生态研究所,沈阳110016

出　　处：《Journal of Forestry Research》2002年第3期196-200,251,共5页林业研究（英文版）

基　　金：This paper was supported by the Chinese Academy of Sciences (KZCX2-406) and National Natural Science Foundation of China (NSFC39970123); and Changbai Mountain Open Research Station.

摘　　要：This study was conducted in Erdaobaihe River passing through the broadleaved and Korean pine forest located on the north slope of Changbai Mountain. In-stream large woody debris (LWD) in two segments of the river channel was investigated with base diameter, top diameter, length, and decay class. To study relationship between in-stream LWD and adjacent riparian forest, species of each log of LWD in segment 1 was identified, and the riparian forest was examined by setting a 32m?4 m quadrat consisting of twelve 8m?m small quadrats. The results showed that, in segment 1, in-stream LWD loading was 1.733 m3/100m or 10.83 m3hm-2, and in segment 2, it was 1.709m3/100m or 21.36 m3hm-2. In-stream LWD in decay class III and IV were accounted for a high proportion, which was different from that in the broadleaved and Korean pine forest, and the possible reason might be different decomposing velocities due to different decomposing conditions. Logs of LWD in stream and living trees in riparian forest declined as diameter increased, and it was in a reverse J-shaped distribution except logs of LWD in segment 1 in the first diameter class. Volumes of LWD in stream and living trees in riparian forest increased as diameter increased, and it was in a typical J-shaped distribution. Loading and species component of in-stream LWD were correlative to status of riparian forest to a certain extent, and there also existed difference. Comparing the correlation and difference was helpful to study on dynamic of the riparian forest.主要对长白山北坡溪流大木质物残体现存量进行了调查和研究,包括两段河道内所有大木质物残体的基径、顶径、长度、腐烂级,并在其中一段对树种尽可能进行了鉴别,以分析河岸带植被与溪流大木质物残体的关系。在调查的红松阔叶林植被带内4500 m长河道内,共发现溪流倒木425株,分属于17个树种;其中III、IV级腐烂占相当大的比重,与林地倒木II、III级腐烂占优有所不同,其原因可能与分解环境的不同有关。两段河道溪流大木质物残体的现存量为1.733 m3/100m、 10.83m3/hm2和1.709 m3/100m、 21.36 m3/hm2。处于III、IV级腐烂的溪流大木质物残体所占比重较大,与在森林中情况有所差异,可能与分解环境的不同有关。溪流大木质物残体和林地活立木的个体数量的径级分布基本上为反J型,而它们材积的径级分布均为典型的J型。溪流大木质物残体的树种组成和不同树种的材积与河岸带植被密切相关,但存在差异,分析这种差异可以深入了解河岸带植被动态。图1表4参18。

关 键 词：In-stream large woody debris Broadleaved and Korean pine forest Changbai Mountain LOADING Riparian zone 

分 类 号：S718.54[农业科学—林学]