| 摘要: |
| 通过野外调查和文献资料的整理分析,确定杭州西湖风景区有外来杂草56种,隶属于21科44属。对西湖风景区外来杂草的种类组成、来源、分布特点进行分析,结果表明:(1)种类较多的科是菊科、苋科、豆科;(2)原产地以来源于北美洲的最多;(3)容易入侵地表裸露较大的生境;(4)发生具有季节差异;(5)种类、分布上呈动态变化。并就外来杂草近二十至三十年的变化进行了讨论。 |
| 关键词: 西湖风景区 外来杂草 种类组成 分布特点 |
| DOI： |
| 分类号:Q948 |
| Fund project: |
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| Study on alien weeds of the West-lake scenic spot in Hangzhou |
|
MEI Xiao-Man1, DING Bing-Yang2, JIN Xiao-Feng3
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1.College of Primary Education, Hangzhou Normal University, Hangzhou 310036, China;2.School
of Life and Environmental Sciences, Wenzhou University, Wenzhou 325027, China;3. College
of Life Sciences, Hangzhou Normal University, Hangzhou 310036, China
|
| Abstract: |
| According to the field investigation and literature analyzing,there are 56 alien weeds belonging to 44 genera,21 families are identified and recorded in West-Lake scenic spot. The species composition, source,and the distribution characteristics are discussed in this paper. The results show that:(1)Compositae,Amaranthaceae,Leguminosae are the three main families;(2)most of the alien weeds originated from North America;(3)uncovered habitats such as wasteland trend to be invaded and settled more easily than others;(4)their occurrences have seasonal differences;(5)species and distribution have dynamic alteration. The changes of alien weeds in 20-30 years were also discussed. |
| Key words: West-Lake scenic spot alien weeds species composition distribution characteristics |
