摘要
植被是山岳型风景区重要的生态景观要素,研究其植被覆盖的动态变化及影响因素,对山岳型风景区可持续发展具有重要意义。当前对于山岳型风景区植被覆盖的研究多以单个山岳型风景区为主,对多景区进行系统性、综合性的研究分析较为欠缺。以我国7个国家级山岳型风景名胜区为研究对象,基于1984~2018年Landsat遥感数据计算NDVI,估算研究区长时序植被覆盖度,并以回归分析、相关性分析与重心轨迹等方法,分析山岳型风景名胜区植被覆盖的时空变化特征及其影响因素。结果表明:在空间上,大部分景区植被覆盖度呈降低趋势的面积大于增长的面积,植被覆盖度沿旅游线路呈降低趋势的现象明显;在时间上,景区高植被覆盖度所占比例最大,大多数表现为先增加后减少的特征;景区植被重心移动轨迹与气候区的分布呈现一定的规律性,位于同一气候区其移动轨迹相似,驱动因素较为一致;在旅游影响方面,逐年增长的客流量对植被覆盖呈复杂性影响。
Vegetation is an important ecological landscape element for mountain scenic spots.It is of great significance to study the dynamic change of vegetation coverage and its causing factors for the sustainable development of mountain scenic spots.The vegetation coverage research of mountain scenic areas was mainly focused on a single scenic area,while their general change rules were few investigated with a combination of long time series data,multiple impact factors,and comparative analysis of different scenic areas.We calculate the NDVIs of seven national mountain scenic areas of China to derive their vegetation coverage information based on the Landsat images during 1984-2018.Then the spatial-temporal changes of vegetation coverage in mountain scenic spots were estimated through the regression analysis,correlation analysis,and trajectory tracking of gravity centers.The results showed that the degradation trend of vegetation cover in most of the scenic spots and the phenomenon ofdegradation trend of vegetation cover along the tourist routes in all of the scenic spotsis obvious.The high vegetation coverage areas were the largest proportions of the scenic spots,and increased first and then decreased in most of them.Besides,the vegetation gravity centers trajectory of mountain scenic spots showed an obvious relationship with their climate zones,and the gravity center movements were similar in the same climate zone.In general,the major climatic driving factors of vegetation cover change were different in different climatic regions.The impact of yearly increasing passenger flow on vegetation cover is more complex.
作者
宋鸿
王淑月
刘海
SONG Hong;WANG Shu-yue;LIU Hai(Hubei University,School of Tourism,Wuhan 430062,China;Hubei University,Faculty of Resources and Environment Science,Wuhan 430062,China;Nanjing Normal University,School of Geographic Sciences,Nanjing 210023,China)
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2022年第7期1548-1558,共11页
Resources and Environment in the Yangtze Basin
基金
国家自然科学基金项目(41971402)
国家重点研发计划项目(2018YFC1506500)。
