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Assessing Meadow Vegetation Degradation in the Tourist Attraction Dongling Mountain of Beijing

LI Wei-min~(1,2),JIANG Yuan~2,LI Yan-ming~3,HUANG Yong-mei~2,LI Xiao-bing~2(1.Beijing Municipal Administration Center of Parks,Beijing 100044,China;2.College of Resources Science and Technology,Beijing Normal University,Beijing 100875,China;3.Beijing Institute of Landscape Gardening,Beijing 100102,China)  
Dongling Mountain,located in the western part of Beijing municipality(115°27′~115°29′N,40°1′~40°3′E)and with precious natural heritage of Beijing's biodiversity and the most famous scenic spots,is sensitive to environmental change due to over-exploitation and lack of management.Meadow vegetation with subalpine features,which located in the area from 1 791m to 2 140m above sea level high,was the key research area.Through analyzing the field survey data collected from 49 quadrats,the degradation of the tourist attraction meadow in Dongling Mt of Beijing has been assessed.Coverage,height,species diversity,aboveground biomass,percentage of annual and biannual plants in total species and soil parameters were recorded during the sampling,and applied to ordination process by two calculation steps of the Detrended Canonical Correspondence Analysis(DCCA) with CANOCO(version 4.5) to differentiate different degradation groups.By the first step,serious degraded meadow was easily differentiated from other groups,and other three degraded meadows,moderate degraded meadow,mild degraded meadow,conventional interfered meadow,were respectively differentiated by the second calculation step.The results show that there are four degradation groups,which can be recognized through the gradients of increase of percentage of annual and biannual plants and of reduction of the coverage,the height,the aboveground biomass,the species diversity and the soil depth,combining with the change of dominant species.Conventionally interfered meadow and mild degraded meadow can be opened to tourists,but with taking appropriate short-term exclosure to restore normal meadow vegetation productivity.Artificial restoration measures by planting indigenous plants,fencing periodically the serious and moderate degraded meadow from tourists and animals,and keeping the peddlery away from the core area of meadow should be effective for protecting the meadow from further degradation and for the conservation of meadow resource.
【Fund】: 国家自然科学基金委员会(自由申请项目):“华北高山、亚高山草甸多尺度空间格局及其可持续利用范式”(编号:40571001);; 国家自然科学基金项目:“秦岭——生态过渡区植被与生境特征及自然地带属性辨析”(编号:40671065)
【CateGory Index】: S812.6
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【References】
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1 Luo Dan1, Sun Xiangyang1, Li Suyan1, Zhang Qiang1, Zhang Yuexian1, Li Xueke2 (1College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083; 2College of Forestry, Beijing Forestry University, Beijing 100083);Soil Taxonomy in Subalpine Meadow of Dongling Mountain[J];中国农学通报;2012-13
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1 WANG Yong1,2;QIAO Yong2;SUN Xiang-yang2.1 Teaching and Experimental Forestry Center,Beijing Forestry University,100095,P.R.China;2 School of Soil and Water Conservation,Beijing Forestry University,100083,P.R.China.;Soil taxonomy in Jiufeng National Forest Park,Beijing[J];北京林业大学学报;2010-03
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