丘陵山地生态修复植物群落演替规律的研究——以江苏省赣榆县横山生态修复区为例

Research on the Succession Rules of Plant Community Eco-renovation on the Hilly Area Taking Hengshan Eco-renovation Zone (Ganyu County of Jiangsu Province) as Example

通过对赣榆横山自然生态修复过程及物种多样性调查分析,在低山丘陵植被修复过程中,阳坡、半阳坡植被演替趋势呈现以山红草+茅草+野山梅、山红草+贾莲子+茅草为主的两个群落类型,山顶以狗牙根+拂子茅+山菊花为主的群落类型。在较短的3年时间,随着植被群落的演替,物种多样性经初期的由高到低,2年后由低到高,而后逐步趋向稳定的变化过程,有效地遏制水土流失的发生。与其他地带性植被恢复过程中物种多样性变化趋势相似。研究结果表明:生态自我修复在该地区实践上是可行的,只要再辅以人工补植,并有相应的法律法规及乡规民约相配套,即可在较短的时间内实现本地区的山清水秀。

Through the investigation ＆ analysis on the natural eco - renovation and species diversity in the Hengshan Mountain of Ganyu County, it is found that during the vegetation renovation process on the hilly area, the vegetation succession process on the tailo and semi - tailo appear two communities as leading community types that are Themeda triandra Forsk. Vat. Japonica （Willd.） Makino ＋ l,alang Grass ＋ Philadelphus incanus and Themeda triandra Forsk. Var. Japonica （Willd. ） Makino ＋ l_,alang Grass. While the community of Cynodon dactylon ＋ Calamgrostis epigejos （1.） Roth ＋ Herba Taraxaci is the main type on the top of mountain. Within three years, along with the succession of the vegetation communities, species diversity also experience the process that decreased at the initial stage, then increased after two years and then gradually stabilized so as to hold back the soil erosion. It is similar to that the species diversity change trend during ~novation process of the other zonal vegetations. The research result shows that it is feasible of ecological self- renovation in this area, only need the artificial repair planting as the complement, with the correspond laws ＆ regulations and social engagement as the counterpart, which can realize within the short time the picturesque scenery locally.