小相岭山系主要植被类型的动态变化分析

doi:10.3724/SP.J.1143.2011.10242

Plant Diversity ›› 2011, Vol. 33 ›› Issue (3): 350-356.DOI: 10.3724/SP.J.1143.2011.10242

小相岭山系主要植被类型的动态变化分析

刘守江1，黄尤优2，胡翠华1

1 西华师范大学国土资源学院；2 西华师范大学生命科学学院，西南野生动植物资源保护教育部重点实验室，四川南充637009

收稿日期:2010-12-24 出版日期:2011-06-25 发布日期:2011-02-24
基金资助:
四川省科技厅应用基础项目(2010JY0089 ); 西华师范大学校基金项目(10A017)

Dynamic Changes Analysis on the Main Vegetation Type in the Xiaoxiangling Mountains

LIU Shou-Jiang-1, HUANG You-You-2, HU Cui-Hua-1

1 Land and Resources College, China West Normal University; 2 College of Life Sciences, China West Normal University,
Key Laboratory of Southwest China Wildlife Resources Conservation, Ministry of Education, Nanchong 637009, China

Received:2010-12-24 Online:2011-06-25 Published:2011-02-24

摘要/Abstract

摘要：

摘要：以3S技术作为信息获取和处理的手段，将景观生态学原理与植被变化研究的传统方法相结合，对小相岭山系主要植被类型在近30年发生复杂相互转化的主要表现和动态变化特征进行量化分析。结果表明：（1）针阔叶混交林与针叶林的变化趋势相似，在30年中持续增长，增幅分别为17.57%、7.56%；新增斑块与原有斑块连接在一起，形成边界复杂的大斑块，景观破碎度和均匀性有所降低。（2）高山灌丛呈先减少后增加的变化趋势，在90年代面积与数量都有所回升，但新增斑块多数为尺寸较小的斑块，大量小斑块的出现导致景观破碎度和离散度有所增加。（3）高山流石滩植被在30年中不断减少，减幅为6.41%；由于减少的多是小斑块，因此破碎化程度并未加深，且分布的均匀性有所加强。研究结果不仅可以解释该山系主要植被景观格局与生态过程相互作用的机理，而且可以阐明其动态演替的方向、过程或扩展潜力。

关键词: 植被景观, 优化监督分类, 景观指数, 动态变化, 小相岭山系

Abstract:

Acquisition and processing information with 3S technology, and combining the principles of landscape ecology with the research methods of traditional vegetation variation, the main vegetation landscape changes of giant panda habitat in the Xiaoxiangling Mountains were quantitatively analyzed from complex mutual-transformation performance and dynamic variation characteristics in nearly 30 years.The conclusions are as follows: (1) The change tendency of the coniferous and broadleaved mixed forest was similar to the coniferous forest,both increased by 17.57% and 7.56% respectively in 30 years; New patches and the original patches were joined together to form large patches complicated boundary, landscape fragmentation degree and landscape evenness index were decreased. (2) Rapid declined in Alpine shrubs in the former 20 years, while gradually increased in the later 8 years, and recovered in size and numbers during this period. But most of the new patches were smaller patches, and the appearance of large number of small patches caused the increase of landscape fragmentation degree and landscape apartness index. (3) Alpine talus vegetation decreased by 6.41% in 30 years; the reduction of the number of small patches resulted in decrease of landscape fragmentation degree and the strengthening of the uniformity of the distribution. The results not only can explain the mechanism of interaction between landscape patterns of the main vegetation and ecological processes in this mountain system, but also expound the direction and process of the dynamic succession or the expansion potential.

Key words: Vegetation landscape, Optimization supervised classification, Landscape index, Dynamic changes, Xiaoxiangling mountains

中图分类号:

Q 948

刘守江1, 黄尤优2, 胡翠华1. 小相岭山系主要植被类型的动态变化分析[J]. Plant Diversity, 2011, 33(3): 350-356.

LIU Shou-Jiang-, HUANG You-You-, HU Cui-Hua. Dynamic Changes Analysis on the Main Vegetation Type in the Xiaoxiangling Mountains[J]. Plant Diversity, 2011, 33(3): 350-356.

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[1]	黄尤优1 , 2 , 刘守江3 , 胡进耀4 , 乔波1 , 2 , 崔诗法1 , 2 , 胥晓1 , 2 . 四川唐家河自然保护区西北至东南方向景观格局的梯度变化[J]. Plant Diversity, 2009, 31(1): 49-56.
[2]	胡翠华1 , 黄尤优2 , 3 , 刘守江1 , 许武成1 . 四川小相岭山系植被景观的斑块特征分析[J]. Plant Diversity, 2009, 31(06): 529-536.

小相岭山系主要植被类型的动态变化分析

Dynamic Changes Analysis on the Main Vegetation Type in the Xiaoxiangling Mountains

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