洞庭湖湿地川三蕊柳等柳属类木本植物退减对湿地生态影响初探  

Preliminary study on the ecosystems influenced by the decline of woody plants of Salix including Salix triandroides in Dongting Lake wetland

作　　者：潘新军 李锡泉[3] 盛孝前[4] 段雪娇 PAN Xinjun;LI Xiquan;SHENG Xiaoqian;DUAN Xuejiao(Forestry Institute of Yueyang City,Yueyang 414000,China;Yueyang branch of HunanAcademy of Forestry,Yueyang 414000,China;Hunan Academy of Forestry,Changsha 410004,China;Forestry Institute of Shimen City,Shimen 415300,China;Forestry Institute of Yueyang City,Yueyang 414000,China)

机构地区：[1]岳阳市林业科学研究所,湖南岳阳414000 [2]湖南省林业科学院岳阳分院,湖南岳阳414000 [3]湖南省林业科学院,湖南长沙410004 [4]石门县林业局,湖南石门415300 [5]岳阳市林业局,湖南岳阳414000

出　　处：《湖南林业科技》2018年第5期96-98,116,共4页Hunan Forestry Science & Technology

基　　金：国家林业局公益性行业专项(201104065):洞庭湖木本沼泽湿地功能规律及恢复关键技术研究

摘　　要：川三蕊柳等柳属类木本植物是洞庭湖湿地重要树种,对洞庭湖湿地植物群落演变有重要意义。本研究通过调查,研究揭示了川三蕊柳等柳属类木本植物资源分布的变化趋势及成因。结果表明,2008年柳属类木本植物共有分布区面积1 435. 7 hm^2,2013年减少至271. 7 hm^2,减少81. 08%;2008年至2013年之间,洞庭湖区湿地以川三蕊柳为代表的木本原生树种分布点以及分布面积加剧减少,导致原生型植被分布退化,入侵生物及非原生型植被面积增加;在洞庭湖湿地水质下降、水位的降低等自然环境因素以及人为干扰的共同作用下,川三蕊柳等柳属类木本植物资源面临着严重的威胁。The woody plants of Salix are important species in Dongting Lake wetland,and hold a significant influence on the evolutions of plant communities and ecosystems. This study investigated the trends and causes of the distribution of woody plants of Salix. The results showed that the distribution area of woody plants of Salix was 1 435. 7 hm^2 in 2008. This area decreased to 271. 7 hm^2 in 2013,which dropped by 81. 08%. From 2008 to 2013,the distribution point and area of woody Salix triandroides had dramatic decreased in Dongting Lake wetland,which resulted in the degradation of the distribution of prototype vegetation and the biological invasion. With the increase of non-prototype vegetation area,the degeneration trend of protozoa species is obvious. The resources of Salix and other woody plants in Dongting Lake wetland are facing a serious threat,when the human disturbance combine with the natural environmental factors such as water quality decline,water level decline.

关 键 词：川三蕊柳 洞庭湖 趋势 成因 

分 类 号：S718.5[农业科学—林学]