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[1]曾剑峰,罗鹏,牟成香,等.岷山地震带山地坡面的植被演替[J].应用与环境生物学报,2014,20(01):1-7.[doi:10.3724/SP.J.1145.2014.00001]
 ZENG Jianfeng,LUO Peng,MOU Chengxiang,et al.Vegetation succession on the earthquake-affected slopes of the Minshan Mountain, China[J].Chinese Journal of Applied & Environmental Biology,2014,20(01):1-7.[doi:10.3724/SP.J.1145.2014.00001]
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岷山地震带山地坡面的植被演替()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
20卷
期数:
2014年01期
页码:
1-7
栏目:
研究论文
出版日期:
2014-02-25

文章信息/Info

Title:
Vegetation succession on the earthquake-affected slopes of the Minshan Mountain, China
作者:
曾剑峰罗鹏牟成香王俊王志远杨浩
1中国科学院成都生物研究所 成都 610041 2中国科学院大学 北京 100049 3中国科学院山地生态恢复与生物资源利用重点实验室 成都 610041
Author(s):
ZENG Jianfeng LUO Peng MOU Chengxiang WANG Jun WANG Zhiyuan YANG Hao
1 Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China 2 University of Chinese Academy of Sciences, Beijing 100049, China 3 Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
关键词:
植被演替物种替代随机性环境筛植被恢复
Keywords:
vegetation succession species substitution stochastic environment screen vegetation restoration
分类号:
Q948.15+4(27)
DOI:
10.3724/SP.J.1145.2014.00001
文献标志码:
A
摘要:
植被演替过程是有序进行还是随机发生,这不仅是植物生态学界一直关注的热点之一,也是植被恢复工作的一个关键问题. 川西岷山地区频繁、强烈的地质构造活动常常引发滑坡,使得这些发生于不同年代的滑坡体坡面上生长着处于不同演替年限的植物群落,从而为验证植被演替模型理论提供了理想场所. 选取海拔、坡度、坡向、土壤母质大致相同的17个坡面,对其植被进行群落调查,并将其划分为3个演替年限组——演替4年、演替30-60年、演替60年及以上. 研究发现:(1)随着演替推进,群落的物种丰富度、均匀度指数、Shannon-Wiener指数、物种优势度均呈上升趋势,表明群落发展过程中物种显著增多;(2)从演替4年到30年这一演替早期阶段,群落明显存在着物种替代现象,但主要功能群(固氮、耐旱、耐贫瘠植物)的重要值在演替4年到演替60多年过程中并未有所下降,表明当地的环境资源条件(水分和养分)通过决定功能群构成强烈制约着坡面群落的物种集合;(3)在演替4年的群落组内,群落物种相似性系数为0.515,而在演替60多年的群落组内该值降为0.251,表明植被演替较晚阶段存在着随机过程. 因此,机体论演替模型不足以完全解释当地植被演替过程.
Abstract:
The deterministic or stochastic nature of vegetation succession has been a bone of contention in plant ecology, and at the same time a key to vegetation restoration. On the slopes of the Minshan Mountain in Western China, frequent and intense geological tectonic activities cause plant communities with various succession ages array closely together, providing an ideal platform to test vegetation succession models. The plant communities of 17 nearby slope sites with similar elevation, gradient, aspect and parent soil material were selected for plant community investigation. The communities were categorized into three succession age groups: early stage (4 years), 30-60 years, and over 60 years. We found that (1) the species richness, species evenness, Shannon-Wiener index and species dominant index all increased with the succession, indicating an obvious species adding process in the community development; (2) the species substitutions were significant in early succession (early stage to 30 years), but the importance values of major functional groups (nitrogen fixing species, dry-tolerant species and leanness-resistant species) showed no evidence of decrease from year 4 to year 60 and over, suggesting that physical conditions (water, nutrition) have strongly controlled the species assemblage through the functional group compositions on the sites; (3) the within-group community similarities decreased from over 0.515 in year 4 to 0.251 in year 60 and over, illustrating a tendency of stochastic direction of vegetation succession in the later stage. We concluded that the organismic model does not satisfactorily explain the succession process.

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备注/Memo

备注/Memo:
国家自然科学基金项目(31170432)、科技部科技基础性工作专项(2012FY110300)、北京山水自然保护中心CEPF项目(201204003)、美国国家地理水与空气基金(GEFC06-12)以及国际山地综合发展中心HICAP项目资助
更新日期/Last Update: 2014-03-06