[1]朱雅娟,贾志清,薛海霞. 高寒沙地2种锦鸡儿的根系分布[J].西北林学院学报,2016,31(2):120-125.[doi:10.3969/j.issn.1001-7461.2016.02.21]
　ZHU Ya-juan,JIA Zhi-qing,XUE Hai-xia. Root Distribution of Two Species of Caragana in Alpine Sandy Land[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2016,31(2):120-125.[doi:10.3969/j.issn.1001-7461.2016.02.21]
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 高寒沙地2种锦鸡儿的根系分布()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第31卷
期数:
2016年第2期
页码:
120-125
栏目:
出版日期:
2016-03-31

文章信息/Info

Title:
 Root Distribution of Two Species of Caragana in Alpine Sandy Land
文章编号:
1001-7461(2016)02-0120-06
作者:
 朱雅娟1; 贾志清1; 薛海霞2
 (1.中国林业科学研究院 荒漠化研究所，青海共和荒漠生态系统定位观测研究站，北京 100091；2.中国林业科学研究院 林业研究所，北京 100091)
Author(s):
 ZHU Ya-juan1; JIA Zhi-qing1; XUE Hai-xia2
 (1.Institute of Desertification Studies,Qinghai Gonghe Desert Ecosystem Research Station,Chinese Academy of Forestry,Beijing 100091,China; 2.Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China)
关键词:
 ; 中间锦鸡儿; 柠条锦鸡儿; 根系; 生物量; 根长
Keywords:
Caragana intermedia;  Caragana korshinskii;  root system;  biomass;  root length
分类号:
S727.23
DOI:
10.3969/j.issn.1001-7461.2016.02.21
文献标志码:
A
摘要:
 中间锦鸡儿和柠条锦鸡儿是共和盆地沙丘造林的主要树种。通过剖面法比较了2种锦鸡儿10年生人工林的不同级别的根系分布特征。结果表明：2种锦鸡儿均为深根系植物，深度达到1 m。中间锦鸡儿的根系生物量主要分布在0~60 cm。其中，粗根、中根和细根分别主要分布在0~30、0~60 cm和0~60 cm。然而，它的3个不同径级根系的长度分别主要分布在0~30、0~50 cm和0~60 cm。柠条锦鸡儿的根系生物量主要分布在0~90 cm。其中，粗根、中根和细根分别主要分布在0~60、0~60 cm和0~90 cm。然而，它的3个不同径级根系的长度分别主要分布在0~60、0~60 cm和0~70 cm。因此，中间锦鸡儿的根系相对较浅，适宜吸收降雨补充的浅层和中层土壤水分。柠条锦鸡儿的根系向更深的土壤中生长，吸收深层土壤水分。这反映了2种锦鸡儿对高寒沙地半干旱气候的适应差异。
Abstract:
Caragana intermedia and C.korshinskii are tow main shrubs used in the re-vegetation on sand dunes in Gonghe Basin.Root distribution characteristics of different types of two Caragana species were studied by profile method.The results showed that 10-years-old plantation of two species were deep-rooted,which was as deep as 1 m.The fresh and dry mass of C.intermedia distributed mainly in 0-60 cm,and the coarse roots,medium roots and fine roots distributed in 0-30,0-40 and 0-60 cm depths,respectively.However,the length of different root types distributed in 0-30,0-50 and 0-60 cm,respectively.The fresh and dry mass of C.korshinskii distributes mainly in 0-90 cm depth,and the coarse roots,medium roots and fine roots distributed in 0-60,0-60.and 0-90 cm,respectively.However,the length of different types of C.korshinskii roots distributed in 0-60,0-60 and 0-70 cm.Therefore,the relative shallower root system of C.inermedia was suitable to use soil water in shallow and medium depth;the root system of C.konshinskii grew to deeper depth to use deeper soil water,indicating the differences in the adaptation characteristics of two Caragana shrubs to semi-arid climate in alpine sandy land.

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备注/Memo

备注/Memo:
 收稿日期：2015-05-20修回日期：2015-07-02
基金项目：国家自然科学基金项目“青藏高原荒漠化土地人工植被水分利用过程研究”(41301095)。
作者简介：朱雅娟，女，博士，副研究员，研究方向：荒漠植物生态学。E-mail:zhuyj@caf.ac.cn
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