围封对荒漠草原植物功能群的影响  

Effects of Enclosure on Plant Functional Groups in Desert Steppe

作　　者：王玉芝[1] 吕世杰[2] 杨溢文 刘丽英[1] 刘红梅[1,3] 杨立中 刘佳[1] 刘菊红 WANG Yuzhi;LV Shijie;YANG Yiwen;LIU Liying;LIU Hongmei;YANG Lizhong;LIU Jia;LIU Juhong(Inner Mongolia Academy of Forestry Sciences,Hohhot 010010,China;Inner Mongolia Agricultural University,Hohhot 010018,China;Key Laboratory of State Forestry and Grassland Administration on Sandy Land Biological Resources Conservation and Cultivation,Inner Mongolia,Hohhot 010010,China)

机构地区：[1]内蒙古自治区林业科学研究院,内蒙古呼和浩特010010 [2]内蒙古农业大学,内蒙古呼和浩特010018 [3]沙地生物资源保护与培育国家林业和草原局重点实验室,内蒙古呼和浩特010010

出　　处：《内蒙古林业科技》2023年第4期1-5,共5页Journal of Inner Mongolia Forestry Science and Technology

基　　金：国家自然科学基金项目(32260352,32160258);内蒙古自然科学基金项目(2021MS03042);内蒙古自治区林业科学研究院科研能力提升项目。

摘　　要：为探讨不同围封年限荒漠草原植物群落功能群基本数量特征及其相互关系,以内蒙古锡林郭勒盟苏尼特右旗哈登呼舒嘎查的短花针茅(Stipa breviflora)草原为研究对象,采用围封年份(1999、2005、2014)和监测年份(2021、2022、2023)构造双因素无重复试验设计,结合方差分析和关联度分析方法探讨生活型功能群的响应特点,得到的初步结论如下:多年生禾草和多年生杂类草功能群盖度较大(一般高于10%),灌木半灌木功能群高度较高(16.59~20.22 cm),一二年生植物基本数量特征(高度、盖度和密度)波动强烈,变异较大。多年生杂类草重要值在群落中较大;灌木半灌木功能群重要值在群落中相对较小。由此可见,不同功能群空间分布的互补效应以及相互关联性决定了植物群落的稳定性;围封草地自然恢复应以多年生功能群整体进行评判;一二年生植物的“夏雨型”特点、生活史特点为多年生功能群提供了重要的生境条件和补充效应。In order to explore the basic quantitative characteristics and interrelationships of plant functional groups in desert steppe with different years of enclosure,the study focused on Stipa breviflora grassland in Hadenghushu village,Sonid Right Banner,Xilin Gol League,Inner Mongolia.Non-repetitive experimental design with two factors was constructed using enclosure years(1999,2005,2014)and monitoring years(2021,2022,2023),and the response characteristics of lifestyle functional groups was explored with analysis of variance and correlation methods.The preliminary conclusions were as follows.The coverage of perennial grass and perennial forbs were larger(generally higher than 10%),while the height of shrub and semi-shrub was higher(16.59-20.22 cm).The basic quantitative characteristics(height,coverage and density)of annual and biennial plants fluctuated strongly and the variation was bigger.The importance value of perennial forbs was relatively higher in the communities,and the important values of shrub and semi-shrub was smaller in the communities.In short,the complementary effect of spatial distribution among functional groups determined the stability of plant communities.The natural restoration of enclosed grasslands should be evaluated based on the overall perennial functional groups.The‘summer rain type’and life history characteristics of annual and biennial plants provided important habitat conditions and supplementary effects for perennial functional groups.

关 键 词：围封草地 荒漠草原 功能群 互补效应 

分 类 号：S812.3[农业科学—草业科学]