Distribution of non-native plant species along elevation gradients in a protected area in the eastern Himalayas, China

被引:15
|
作者
Yang, Mingyu [1 ]
Lu, Zheng [1 ]
Fan, Zhongyu [2 ]
Liu, Xia [3 ]
Hens, Luc [4 ]
De Wulf, Robert [5 ]
Ou, Xiaokun [1 ]
机构
[1] Yunnan Univ, Inst Ecol & Geobot, 2 Northern Green Lake Rd, Kunming 650091, Yunnan, Peoples R China
[2] Chinese Acad Sci, Lijiang Alpine Bot Garden, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
[3] Nanjing Forestry Univ, Coll Forestry, 159 Longpan Rd, Nanjing 210037, Jiangsu, Peoples R China
[4] Flemish Inst Technol Res, Boeretang 200, B-2400 Mol, Belgium
[5] Univ Ghent, Lab Forest Management & Spatial Informat Tech, Coupure Links 653, B-9000 Ghent, Belgium
基金
中国国家自然科学基金;
关键词
Non-native plant; Elevation gradient; Distribution pattern; Nestedness; Himalayan ecosystem; ALIEN PLANTS; ALTITUDINAL DISTRIBUTION; DISTRIBUTION PATTERNS; ROADSIDE COMMUNITIES; EXOTIC PLANTS; MOUNTAINS; INVASIONS; DISTURBANCE; TOURISM; CONSERVATION;
D O I
10.1007/s00035-018-0205-6
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Mountain ecosystems are becoming increasingly threatened by non-native plant invasions. In this paper, the occurrence of non-native plant species was examined in a protected area (Laojun Mountain Area) in the eastern Himalayas, China. Sampling plots were systematically set up along elevation from 1950 to 3500m a.s.l. Sixty-one non-natives were recorded that account for 24% of the roadside flora. The number of non-native species decreased continuously with increasing elevation and significant nestedness was found between the low- and high-elevation plots. Moreover, all non-native species distributed at high elevation were also found at low elevation and mountain specialists were not found among non-natives. These results indicate that the eastern Himalayan ecosystem is not immune to invasion and most of the non-natives spread from lowland areas upward to the highlands. Future efforts to manage plant invasions in this region should concentrate on low-elevation areas where agriculture and disturbances by tourism are increasing rapidly.
引用
收藏
页码:169 / 178
页数:10
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