Analysis on Vegetation Succession Model and Process under Groundwater Exploitation in Subei Lake Watershed

• 作者: LI Ying WANG Cun-liang YANG Feng ZENG Lei ZHAO Gui-zhang
• 来源期刊: 气象与环境研究：英文版
• 学科: 农学
• 关键词: 水生植被 城市地下水 演替模型 流域 苏北 开发过程 地下水位 埋藏深度
• 年，卷（期）: 2012,（10）
• 页码范围: 56-59
• 页数: 4页
• 分类号: S792.186

摘要

[Objective] The study aimed to analyze vegetation succession process under groundwater mining conditions in Subei Lake watershed. [Method] A succession model for vegetation and burial depth of groundwater level was constructed based on field survey, and it was used to predict the vegetation succession rules and process according to the changes in burial depth of groundwater level in Subei Lake watershed under groundwater exploitation. [Result] In Subei Lake watershed, aquatic vegetation was most closely related to burial depth of groundwater level, followed by mesophytic vegetation, while psammophilous and xerophytic vegetation did not have obvious relation with burial depth of groundwater level. When burial depth of groundwater level was small, dominant plants grew well, but they grew worse or died with the increase in burial depth of groundwater level. As the groundwater level fell constantly, burial depth of groundwater level went up, and vegetation succession would occur gradually from aquatic vegetation to mesophytic and xerophytic vegetation, from Carex L. and Iris ensata Thunb shoaly land to Achnatherum splendens shoaly lands, from Salix psammophila shrubs to Artemisia desterorum Spreng and Caragana korshinskii shrubs, and from Populus simonii to Salix matsudana. [Conclusion] The research could provide scientific references for studying the relationship between groundwater resources and ecological environment in Subei Lake basin.