| 摘要: |
| 薇甘菊 Mikania micrantha 是中国华南地区危害经济作物和森林植被的主要入侵物种之一，造成了大量的经济损失和生态破坏。为研究薇甘菊生长与地类间关系，该研究以台山市为例，通过调查薇甘菊在不同地类上的 3 个月生长状况，采集盖度、种群厚度、藤蔓长度、攀缘率、受害植物种、危害程度等指标，利用主成分评价方法，对不同地类薇甘菊入侵严重程度进行评价。结果表明：（1）薇甘菊在 6种不同地类的入侵严重程度依次是：低岗地 > 农田荒芜耕地 > 水域及水利设施用地 >沿海滩涂灌木林地> 商品林地 > 生态公益林林地；（2）薇甘菊生长与地势有密切联系，在 6 种不同地类中，薇甘菊在地势开阔的地类增长率明显高于地势低矮的地类；（3）薇甘菊的生长与光照强度和土壤湿度呈正相关，不同地类的光湿条件越充足，薇甘菊的生长盖度和厚度越大，反之亦然。基于不同地类的薇甘菊生长特点，给予了相应的防治建议，但仍需长期的观察实践考验。 |
| 关键词: 薇甘菊 危害 主成分分析 |
| DOI： |
| 投稿时间：2022-09-16修订日期：2022-10-19 |
| 基金项目: |
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| Harm Analysis of Mikania micrantha in Different Land Types |
| pengguanming,guanyuliang,zhengxiaozhong,xiewei,chenxiuyun,yinzuoyun |
| (Taishan Hongling Seed Orchard;Zhongkai University of Agricultural and Engineering) |
| Abstract: |
| Mikania micrantha, one of the main invasive species harming commercial crops and forest vegetation in South China, has caused a lot of economic losses and ecological damage. To find out the relationships between the growth of M. micrantha and land types, this research used principal component analysis to evaluate the severity of invasion among different land types under the three months investigation in Taishan city, collecting M. micrantha growing index concluding coverage, thickness, cirrus length, climbing rate, affected species, and affected extent. The results showed that:（1）The M. micrantha severity in the invasion of six different land types in turn are: lowland, farmland, and barren land, land for water conservancy facilities, shrubby forest land along coastal beaches, commercial forest land, ecological public welfare forest land.（2）The growth of M. micrantha was closely related to topography. Among the six different types of terrain, the growth rate of M. micrantha in open terrain was significantly higher than that in low terrain.（3）The growth of M. micrantha was positively correlated with light intensity and soil moisture. The more sufficient the light humidity conditions were, the greater the growth coverage and thickness of M. micrantha were, and vice versa. Based on the growth of M. micrantha characteristics among different land types, research gives some corresponding prevention advice, but it still needs long-term observation practice tests. |
| Key words: Mikania micrantha damage principal component analysis |
