湖泊科学2016，Vol.28Issue(5)：1095-1102,8.DOI:10.18307/2016.0520
洞庭湖湿地植物生活型与生态型
Life forms and ecotypes of wetland plants at Lake Dongting wetlands
摘要
Abstract
The relationship between plant community structure and its environment by analyzing plant life forms and plant ecotypes has important significance for the occurrence, development and succession law of plant community. An investigation was made on the species life form and ecotypes of wetland plants in Lake Dongting wetlands. Herbs are the dominant growth form, followed by li-anas, but trees are scarce. Therophytes are major life forms, followed by geophytes and hemicryphytes, and phanerophtes and chamaephytes were the least in Lake Dongting wetlands. The proportion of phanerophtes and chamaephytes in different communities and the same life in different plant communities increased with the elevation. Hygrophytes is major ecotype according to water re-quirement. Neutral soil plant is dominant ecotype based on soil pH requirement. Heliophytes is dominant ecotype according to light intensity demand. The depositions of plants are major ecotype according to responses sediment ubrial. Heliophytes, xerophyte, mes-ophyte, alkaline plant, neotrophilous and burial intolerant plant distribute mainly in low-elevation sites. Shade-demanding plant, shade-enduring plant, acid plant, alkaline plant and burial intolerant plant species also increased with elevation. In Lake Dongting wetlands, the proportion of plants which can adapt to both flooding and sedimenting processes simultaneously is high. Water is the key factor determining the plant distribution of different ecotypes. Species and ecotypes were more diverse in intermediate- and high-elevation sites.关键词
洞庭湖湿地/植物生活型/植物生态型Key words
Lake Dongting wetlands/plant life form/plant ecotype引用本文复制引用
侯志勇,谢永宏,陈心胜,胡佳宇,曾静,李旭,潘柏含..洞庭湖湿地植物生活型与生态型[J].湖泊科学,2016,28(5):1095-1102,8.基金项目
国家科技支撑计划项目（2014BAC09B03）和国家科技基础性工作专项（2013YF111800）联合资助 （）
