摘要
沙区景观表现为沙丘和低地交错分布.沙区常具独特的植物区系,含有特有和稀有植物.沙区植物丰富度降低和特有(稀有)植物消失问题近些年已受到很大关注,被列入国际生物多样性保护计划,很多国家和地区都对此开展了专门的研究.本文以近期发表的文献为基础,从植物多样性保护问题的提出、植物多样性形成机制、植物多样性保护途径、植物多样性研究与生态学理论的发展等方面论述了沙区植物多样性保护及其研究进展.沙区植物多样性保护应注意植物多样性保护目标的地域间差异(维持沙丘上的高植物丰富度还是保护特有或稀有植物)、流沙固定-植物多样性保护间的均衡、"植物多样性保护的量(高的植物丰富度)-质(特有或稀有植物出现)"间的均衡.还应将沙丘体和丘间低地视为一个统一体,研究干扰和生境破碎化对植物多样性造成的影响.
The landscape in sand dune areas is characterized by the alternate distribution of sand dune and interdune lowland, and the unique floras in these areas are some endemic or rare plant species. In recent years, the decrease in plant species richness and the disappearance of some endemic or rare plant species in these areas have been received special attention, which were listed in the Program of International Biodiversity Conservation, and studied in many countries and districts. In this paper, the research progress in these fields was summarized from the aspects of significance of plant diversity conservation, formation mechanisms of plant diversity, ways of plant diversity conservation, roles of plant diversity research in the development of ecological theories, and important issues in operating plant diversity conservation project. To conserve plant diversity in sand dune areas, attentions should be paid to the differences in conservation goals （to maintain high species richness or to conserve endemic or rare species） among different regions, and the balances between the stabilization of active sand and the conservation of endemic or rare species, and the maintenance of high species richness and the conservation of endemic or rare species. It needed also to consider the sand dune and the interdune lowland as a unified landscape unit to explore the impacts of disturbances and habitat fragment on plant diversity.
出处
《应用生态学报》
CAS
CSCD
北大核心
2008年第1期183-190,共8页
Chinese Journal of Applied Ecology
基金
中国科学院沈阳应用生态研究所领域前沿项目(C12LD-06LYQY4001-506)
国家科技支撑计划资助项目(2006BAC01A12).
关键词
植物丰富度
特有植物
海滨沙丘
内陆沙丘
丘间低地
生境破碎化
plant richness
endemic plant species
coastal dune
inland dune
interdune lowland
habitat fragment.
作者简介
通讯作者：刘志民，男，1965年生，博士，研究员．主要从事干旱风沙区植物生态学和恢复生态学研究，发表论文70余篇．E-mail：zmliu@iae．ac．cn
