[1]李瑞,刘云芳,张克斌.盐池草地植被数量波动研究[J].水土保持研究,2008,15(04):220-223.
　LI Rui,LIU Yun-fang,ZHANG Ke-bin.Study on the Grassland Vegetation Quantitative Fluctuation in Yanchi County[J].Research of Soil and Water Conservation,2008,15(04):220-223.
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盐池草地植被数量波动研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 15 期数: 2008年04期 页码: 220-223 栏目: 出版日期: 2008-08-20
Title:
Study on the Grassland Vegetation Quantitative Fluctuation in Yanchi County
作者:
李瑞1, 刘云芳2, 张克斌3
1. 铁道第四勘察设计院 环境工程研究处, 武汉 430063;
2. 武汉金银湖公园管理处, 武汉 430023;
3. 北京林业大学 水土保持学院, 北京 10083
Author(s):
LI Rui1, LIU Yun-fang2, ZHANG Ke-bin3
1. The Fourth Survey and Design Institute of China Railways, Wuhan 430063, China;
2. The Administration office of Wuhan, Jingyihu Park, Wuhan 430023, China;
3. College of Soil and Water Conservation of Beijing Forestry University, Beijing 100083, China
关键词:
种群; 群落; 综合数量特征指标; 数量波动
Keywords:
population community; integrated quantitative characteristic index; quantitative fluctuation
分类号:
S812
摘要:
以宁夏盐池为研究对象，分析2002-2005年主要植物种群数量波动及群落特征指标动态。黑沙蒿及刺沙蓬等植物数量特征呈波动式上升，受降水等气候因子影响较小，是干旱年维持区域生态平衡的重要植物种；赖草等多年生草本植物呈波动式下降趋势；狗尾草、小画眉草等一年生草本植物受当年降水量及调查前期降水量影响较大，呈现气候波动型。分析盐池县2002-2005年的群落数量特征变化表明，植被盖度、密度及植物种数与降水量年际波动趋势一致，2002年降水量最大，植被盖度、密度及植物种数也最大，分别为66.98%、278.14万株/hm2和57种；2005年降水最少，植被盖度、密度及植物种数也居4 a最低，分别为36.02%、75.68万株/hm2和43种。由于降水对植被生长的滞后作用影响，样地内生物量和植物平均高度并未与降水量波动趋势一致。影响盐池县草地植被波动的主要气候因子为降水，其次与退耕还林、人工封育及撂荒等人为活动也有一定关系。
Abstract:
Taking Yanchi County,Ningxia Hui Autonomous Region as the research area,the quantitative fluctuation of main vegetable population and character index dynamic of vegetable community from 2002 to 2005 were analyzed.Less affected by precipitation,Artemisia ordosica Thunb had a raising quantitative character from 2002 to 2005.They were the important plants for maintaining regional ecological balance in years of drought.Some herbaceous perennids such as Anaeurolepidium secalium had a downtrend in fluctuation from 2002 to 2005.Having been badly affected by total precipitation in the year or before survey,some annual herb such as Setaria viridis and Eragrostis poaeoides took on climatic fluctuation style.The analyses of community quantitative character of Yanchi from 2002 to 2005 showed that vegetation coverage,density and species number had the same trend as precipitation fluctuation in years,while vegetation height and biomass didn’t,because of the hysteresis of precipitation to vegetation.The main climate factor of grassland vegetable fluctuation in Yanchi was precipitation and there were also something with man-made factors,for example convening cropland to forests,artificial fencing and discontinuing farming,letting go out of cultivation and so on.

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备注/Memo

收稿日期:2007-11-22。
基金项目:国家自然基金 （30771764）；国家林业局项目（盐池荒漠化定位监测660550）
作者简介:李瑞（1979- ），男，博士，主要研究方向：水土保持及生态环境工程。E-mail：rlfer@126.com
通讯作者:张克斌（1957- ），博士，副教授，研究方向：荒漠化防治与监测及干旱区环境管理。E-mail：ctccd@bjfu.edu.cn

更新日期/Last Update: 1900-01-01