Abstract
Qionghai Lake is the second largest freshwater lake in Sichuan Province. Invasive plants have damaged the ecological balance of Qionghai Lake. Regular investigation and monitoring of invasive alien plants in Qionghai Lake in autumn and winter. Study structural changes and trend changes. Mapping dynamic monitoring of the distribution of invasive plants. Upon investigation, a wide range of invasive plants with a large rits are Eupatorium Adenophorum, Lantana camara, Bidens alba(L.) DC, Alternanthera philoxeroides, Pharbitis purpurea(L.) Voisgt and Oxalis corniculata L. The introduction of the Tagetes erecta L as Ornamental plants, the proliferation occurred because of mismanagement. The number of Mirabilis jalapa L. is very small. Analysis of the way of invasive alien plants into the Qionghai Sea and the measures of prevention and control.
Highlights
Qionghai Lake is located in Xichang, Liangshan Yi Autonomous Prefecture, Sichuan Province of China
Plants grow in a smaller range and only a small number of invasive plants are found by the sea, such as upatorium Adenophorum,Bidens alba(L.) DC
The first survey find that the most widely distributed of Pharbitis purpurea(L.) Voisgt, Eupatorium Adenophorum, Lantana camara and Alternanthera philoxeroides in invasive plants.Distribution diameter of approximately is 2039.29 meters
Summary
There are 45 species of invasive species from Qionghai Lake, which belong to 20 sections. According to the number and distribution range of invasive plants in this area, 8 varieties are selected, such as Eupatorium Adenophorum, Lantana camara, Bidens alba (L.) DC, Alternanthera philoxeroides, Pharbitis purpurea (L.) Voisgt, Oxalis corniculata L. The survey route is Liangshan Vocational and Technical School, Qionghai Wetland Park, Moon Goddess Square, Qionghai Hotel, Jingfeng Specialty Barbecue Restaurant, Birdwatching Island. This route is a free wetland tour area. It has high traffic and high openness. Human factors are extremely susceptible to affectther spread of invasive plants
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