淮河源12种园林地被植物竞争格局与过程

淮河源区处于北亚热带向暖温带过渡地带,地被植物种类繁多,选取该地区有代表性的12种典型地被植物,进行应用表现情况调查和竞争力量化评价,选用园林地被植物权重(以分布面积计)、园林地被植物养护的投入和园林地被抗杂草入侵能力三个量化指标,计算得出竞争力指数。研究表明淮河源区园林地被植物栽植后5—10年,其竞争力的强弱可充分表现出来,其中木本植物整体竞争力大于草本,而藤本植物竞争力最强。但也有少量草本如红花酢浆草,竞争力超过部分木本植物,值得大量推广运用。根据淮河源区园林地被植物群落竞争格局与过程,在进行园林工程实践中充分考虑园林地被上杂草和地被植物自身竞争力状况,降低园林工程中化学药品的使用和能源消耗,以保护生物多样性。

Competitive Pattern and Process of Twelve Kinds of Ground Cover Plants in Gardens of Headwaters of the Huaihe River Basin

The climate condition of Headwaters of the Huaihe River Basin was from north subtropical zone to warm temperate zone. The kinds of ground cover plants was very various. Twelve kinds of ground cover plants which were common in Headwaters of the Huaihe River Basin were selected to study the application performances and the quantitative research on competitive pattern. Three items of data about the distribution area, the maintenance inputs and the weed resistant ability was used to calculate the competitiveness index of ground cover plants. Results showed that the competitiveness of ground cover plants would be fully displayed when they had been planted for three to five years in Headwaters of the Huaihe River Basin. The overall competitiveness of woody plants was the stronger than herbs, and the competitiveness of vines was the strongest. But there were also a few herbs such as Oxalis corymbosa, its competitiveness was stronger than some woody plants. According to the competitiveness of the plants could guide protecting biological diversity in garden engineering.