[1]崔静,黄佳健,陈云明*,等. 黄土丘陵区人工柠条林下草本植物物种多样性研究[J].西北林学院学报,2018,33(3):14-20.[doi:10.3969/j.issn.1001-7461.2018.03.03]
　CUI Jing,HUANG Jia-jian,CHEN Yun-ming*,et al. Biodiversity of Herbaceous Species under Caragana microphylla Plantations in Loess Hilly Region[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2018,33(3):14-20.[doi:10.3969/j.issn.1001-7461.2018.03.03]
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 黄土丘陵区人工柠条林下草本植物物种多样性研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第33卷
期数:
2018年第3期
页码:
14-20
栏目:
出版日期:
2018-05-31

文章信息/Info

Title:
 Biodiversity of Herbaceous Species under Caragana microphylla Plantations in Loess Hilly Region
文章编号:
1001-7461(2018)03-0014-07
作者:
 崔静1; 2; 黄佳健3; 陈云明4; 5*; 曹扬4; 5; 王琳琳6
 （1.云南省环境科学研究院 中国昆明高原湖泊国际研究中心，云南 昆明 650034；2.云南环境工程设计研究中心，云南 昆明 650034；3.云南今禹生态工程咨询有限公司，云南 昆明 650233；4.西北农林科技大学 水土保持研究所，陕西 杨陵 712100；5.中国科学院 水利部水土保持研究所，陕西 杨陵 712100；6.榆林市绿巨人水利设计有限责任公司，陕西 榆林 719000）
Author(s):
 CUI Jing1; 2; HUANG Jia-jian3; CHEN Yun-ming4; 5*; CAO Yang4; 5; WANG Lin-lin6
 （1.Kunming China International Research Center for Plateau-Lake,Yunnan Institute of Environmental Science,Kunming,Yunnan 650034,China; 2.Yunnan Environmental Engineering Research Center,Kunming,Yunnan 650034,China; 3.Yunnan Jinyu Ecological Engineering Consultation Co.,Ltd,Kunming,Yunnan 650233,China)
关键词:
 ; 黄土丘陵区; 柠条; 草本; 物种多样性; 群落相似性系数
Keywords:
 ; loess hilly region;  Caragana microphylla;  herbaceous;  species diversity;  community similarity coefficient
分类号:
S793.3
DOI:
10.3969/j.issn.1001-7461.2018.03.03
文献标志码:
A
摘要:
 人工林林下物种的组成对整个人工林群落的稳定性及生态环境的影响至关重要，采用时空替代法，对黄土丘陵区不同生长年限的人工柠条林下草本植物物种组成及多样性进行研究，为黄土丘陵区人工柠条林的抚育管理提供科学、合理的理论依据。研究表明，1）随着柠条林的生长，柠条林下草本植物种类在不断地更替，植物种类以30 a柠条林最为丰富，各生长年限柠条林下草本生活型均以多年生草本为主；2）柠条林下草本丰富度指数（S）、Shannon-Wiener多样性指数（H′）、Pielou均匀度指数（Jsw）的变化随柠条生长年限的增加变化一致，表现为在10~30 a时多样性指标随柠条林龄增加而增加，30~40 a时指标随柠条林龄增加开始下降，40~50 a时指标又随柠条林龄增加有增加趋势。生态优势度Simpson（D）指数变化则刚好相反；3）随柠条林龄的增加，柠条林群落相似性系数增加，且相邻2 a之间有较高的相似性系数。不同年份柠条林群落与撂荒地相比，相似性系数逐渐降低，与天然狼牙刺相比，30 a柠条林的相似性系数最高，值达0.895 8，说明在30 a时柠条林群落的稳定性较高。在柠条林生长至30 a左右时，可适当对林分进行抚育砍伐，使柠条林群落的稳定性维持在一个较高的、与天然林大致保持一致的阶段，植物种类更替平稳，生态功能持续发挥。
Abstract:
 In order to provide theoretical basis for the management of Caragana microphylla plantations,the space-time alternative method was used to study the species composition and diversity of herbaceous plants under the plantations of C.microphylla in loess hilly region.The results indicated that 1) with the growth of C.microphylla,the species replacement occurred all the time.In 30 a plantation,the herbaceous species was most abundant.Perennial herbs were the main life form under C.microphylla plantations with different ages.2) With the growth of C.microphylla,the species richness index,Shannon-Wiener index and evenness index showed similar changing patterns,all increased in 10-30 a and reduced in 30-40 a and had increasing trends in 40-50 a plantations.Simpson index showed the opposite trend with C.microphylla growth.3) The community similarity coefficient increased with the C.microphylla growth,and higher similarity coefficient was found between the two adjacency years.Compared to the abandoned land,the community similarity coefficient reduced gradually,while compared to the natural Sophora davidii community,the similarity coefficient was the highest in 30 a plantation,and the value was 0.895 8,indicating that 30 a C.microphylla community had a higher stability.It was suggested that the appropriate cutting should be conducted in 30 a plantation to maintain the C.microphylla community at a higher stage which was consistent with the natural forest,and to make a smooth replacement for herbaceous plants to play the ecological function sustainably.

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备注/Memo

备注/Memo:
 收稿日期：2017-02-24修回日期：2017-05-02
基金项目：国家重点研发计划课题(2016YFC0501703)。
作者简介：崔静，女，硕士，工程师，研究方向：水土保持与荒漠化防治。E-mail：cui.jing1987@163.com
*通信作者：陈云明，男，博士，研究员，研究方向:生态恢复与水文。E-mail:ymchen@ms.iswc.ac.cn
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