【作者】 王月海； 许景伟； 韩友吉；

【Author】 WANG Yuehai,XU Jingwei,HAN Youji (Shandong Academy of Forestry Sciences,Jinan 250014,China)

【机构】 山东省林业科学研究院；

【摘要】 在黄河三角洲国家自然保护区的滨海湿地,选取6个不同时间的人工调水区域,调查研究了不同调水时间对区域植被的影响,结果表明,随着调水时间的变化,这些区域的植被发育已呈现出不同的恢复状态,随着调水时间的增加,物种多样性指数也相应增加,但充足的淡水资源的优越生境,使水生植物占据优势,更适合其生长发育,物种丰富度和多样性反而减少。对退林还湿区域进行的调查研究表明,遵循植被自然演替规律,可恢复湿地的生态环境,耐盐的植物首先成为植被恢复的主力军,对改善湿地土壤盐分,向好的生态环境转变创造有利条件。更多还原

【Abstract】 On the coastal wetland of yellow river delta area,six sampling sites where water diverted at different time were selected to investigate the effect of water diversion time on vegetation characteristics,the results showed that: with water diversion time’s increase,vegetations in this region had developed into different succession stages,species diversity index rose;but in the site with abundant freshwater resources,hydrophilic plants were more adaptive with this environment and became dominant species,species abundance index and diversity index of the whole community decreased.Studies to conversion sites of forest to wetland showed that disturbed wetland ecological environment could be recovered by following the nature succession principles,in this process,salt-tolerant plants first became the main pioneer species,they could absorb the soil salt and improve the wetland ecological environment conditions.更多还原