摘要
对自然保护区土地利用变化的研究是评价保护区环境质量及保护效益的有效手段。使用巢式分析法,借助RS和GIS技术,对庐山自然保护区土地利用的面积变化、转换模式及景观格局变化进行研究。结果表明:保护区林地面积百分比由65.31%增加到71.21%,灌草丛、耕地面积百分比分别减少了5.36%、0.97%。保护区外围林地面积百分比由13.54%增加到15.52%,灌草丛、耕地面积百分比分别减少了2.81%、3.20%;保护区植被正经历正向次生演替过程,保护区外围逆行次生演替过程占优势;景观水平上,保护区的破碎化程度低于外围圈层,多样性水平高于保护区外围,体现了保护区的保护效益。但随时间推移,保护区内外景观的破碎化程度均增强,景观由某种或某些景观类型主导的程度减弱。各种政府决策、人口变化、旅游发展是保护区景观格局变化的主要驱动因子。
Nested analysis was used to study the land use changes in area, conversion mode and landscape pattern in Lushan Na- ture Reserve with the help of RS and GIS technology. Results showed that the area of foresfland in Lushan Nature Reserve increased from 65.31% to 71.21% during 20130-2009, and the area of bush and farmland decreased by 5.36% and 0. 97%, respectively. However, the area of forestland in its periphery increased from 13.54% to 15.52% , and the area of bush and farmland decreased by 2.81% and 3.20%, respectively. Vegetation in Lushan Nature Reserve was experiencing positive secondary succession; meanwhile, retrogressive secondary succession was dominant in its periphery. At landscape level, the degree of landscape fragment in Lushan Nature Reserve was lower than its periphery, but the biodiversity was higher, which indicated the protective benefit. However, in the study period, the degree of landscape fragmentation intensified within and outside the nature reserve, and the dominant position of some landscape types was weaken. The main driving factors on the landscape change in Lushan Nature Reserve are government decision-making, demographic changes and tourism development.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2012年第8期60-65,共6页
Journal of Northeast Forestry University
基金
国家自然科学基金(30940006)
林业公益性行业科研专项(200904003)
