摘要
通过查阅放牧、旅游、围封等3种人为干扰方式对荒漠草原景观格局影响的相关文献,归纳其主要研究结果,认为放牧会导致草原斑块化现象发生,不同的放牧方式使草原斑块的空间分布格局变得复杂化,较大尺度斑块被割裂,植物群落株丛趋向于小丛化,进而导致草原整体景观趋于破碎化与复杂化;旅游破坏了植被斑块的完整性,导致植物多样性减少,其中旅游道路表现出强烈的分割作用,被分割后的草原整体景观破碎化程度加剧,呈现出具有多种要素分布的格局状态;围封促使围栏内植被状况逐渐好转,植物多样性和生产力得以提高,植被覆盖度显著增加,形成由于植被覆盖度空间差异所引起的辐射状景观格局,但长时间围封会使景观多样性降低。
According to the related literatures about the influence of three kinds of artificial interference methods, such as grazing, tourism and enclosure, on the landscape pattern of desert steppe, it is considered that grazing will lead to the occurrence of grassland fragmentation, and different grazing modes will complicate the spatial distribution pattern of grassland patching, the larger scale patches will be split, and the plant clusters will tend to be small clusters, which will lead to the fragmentation and complexity of the overall landscape of the grassland. Tourism destroys the integrity of vegetation patches, leading to the decrease of plant diversity, among which the tourism road shows a strong segmentation effect, and the degree of fragmentation of the whole grassland landscape is aggravated with presenting a pattern of distribution of multiple elements. Enclosure promotes the gradual improvement of the vegetation condition, the increase of plant diversity and productivity and the significant increase of vegetation coverage, resulting in the formation of the radial landscape pattern caused by the spatial difference of vegetation coverage, but the long-term enclosure will reduce the landscape diversity.
作者
陈颜洁
蒙仲举
党晓宏
CHEN Yan-jie;MENG Zhong-ju;DANG Xiao-hong(College of Desert Science and Engineering,Inner Mongolia Agricultural University,Hohhot 010011,China;Wind Erosion Key Laboratory of Central and Government,Hohhot,Inner Mongolia,Hohhot 010011,China;Hanggin Desert Ecological Position Research Station,Ordos,Inner Mongolia,Ordos 017400,China)
出处
《内蒙古林业科技》
2019年第4期56-59,共4页
Journal of Inner Mongolia Forestry Science and Technology
基金
国家自然科学基金项目“内蒙古中部荒漠草原微斑块发育与土壤优先流响应机制”(51769019)资助
关键词
放牧
旅游
围封
荒漠草原景观格局
grazing
tourism
enclosure
landscape pattern of desert steppe
