不同放牧方式对克氏针茅草原植物群落物种间关联的影响分析——以中蒙边境两个苏木为例
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摘要
为探讨克氏针茅草原植物群落物种间关联对不同放牧方式的响应,文章以中蒙边境两个苏木为例,选用X2检验、Jaccard关联指数、Spearman秩相关分析和Pearson相关系数对研究区内两个苏木的植物群落的优势种种间关联进行测定,结果表明:与蒙古国纳兰苏木相比,中国那仁宝拉格苏木草场的植物群落种间关系联结较为松散,种间存在一定的竞争、互斥现象;那仁宝拉格苏木植物群落内一年生植物比重增加,挤压原生多年生优势种生存空间;不同放牧方式对草原植物群落物种间关联产生重要影响,不合理的放牧方式可能导致草原种间失联,从而引起草原生态系统失衡。
In a case study of two townships at the China-Mongolia border,the chi-squared test,Jaccard correlation index,Spearman rank correlation analysis and Pearson correlation coefficient were used to determine the dominant interspecific associations of plant communities to explore the response of species associations in Stipa krylovii steppe to different grazing patterns. It was found that,compared with Nalan townships in Mongolia,the inter-species relationships between the plant communities of Narenbaolage townships in China were relatively few close,moreover,competition and mutual exclusion among species were observed to be greater in the Narenbaolage townships. The proportion of annual plants in the Narenbaolage townships was greater than in the Nalan townships,and the area of the perennial dominant species was reduced. Different grazing methods have an important impact on the inter-species associations of grassland plant communities,unreasonable grazing may lead to the loss of grassland species and imbalance of the grassland ecosystem.
In a case study of two townships at the China-Mongolia border,the chi-squared test,Jaccard correlation index,Spearman rank correlation analysis and Pearson correlation coefficient were used to determine the dominant interspecific associations of plant communities to explore the response of species associations in Stipa krylovii steppe to different grazing patterns. It was found that,compared with Nalan townships in Mongolia,the inter-species relationships between the plant communities of Narenbaolage townships in China were relatively few close,moreover,competition and mutual exclusion among species were observed to be greater in the Narenbaolage townships. The proportion of annual plants in the Narenbaolage townships was greater than in the Nalan townships,and the area of the perennial dominant species was reduced. Different grazing methods have an important impact on the inter-species associations of grassland plant communities,unreasonable grazing may lead to the loss of grassland species and imbalance of the grassland ecosystem.
引文
[1]巴音.不同退化程度克氏针茅草原群落地下生物量的比较研究[D].呼和浩特:内蒙古农业大学,2008.
[2]张小红,宋彦涛,乌云娜,等.放牧强度对克氏针茅草原植物功能群的影响[J].草业科学,2017,34(10):2033-2041.
[3]侯伟峰,乌恩,敖特根,等.放牧强度对克氏针茅典型草原地上生物量的影响[J].中国草地学报,2016,38(6):71-77.
[4]罗培,敖敦格日乐,P MYAGMARTSEREN,等.不同放牧方式对草场放牧压力的影响研究———以绵羊群日活动轨迹为视角[J].安徽农学通报,2018,24(23):102-105.
[5]赛西雅拉图,白丽艳,张萍.2003—2010年克氏针茅放牧草地资源的变化[J].草业科学,2014,31(4):607-613.
[6]刘珏宏,高慧,张丽红,等.内蒙古锡林郭勒草原大针茅—克氏针茅群落的种间关联特征分析[J].植物生态学报,2010,34(9):1016-1024.
[7]李潮,谢应忠,许冬梅,等.宁夏荒漠草原植物群落的种间关系[J].草业科学,2013,30(11):1801-1807.
[8]何光熊,闫帮国,纪中华,等.元谋干热河谷Savanna草地优势植物的种间关系[J].草业学报,2018,27(6):62-71.
[9]罗清虎,孙凡,崔羽,等.泥石流频发流域失稳性坡面主要植物种间关联性[J].应用与环境生物学报,2018,24(4):689-696.
[2]张小红,宋彦涛,乌云娜,等.放牧强度对克氏针茅草原植物功能群的影响[J].草业科学,2017,34(10):2033-2041.
[3]侯伟峰,乌恩,敖特根,等.放牧强度对克氏针茅典型草原地上生物量的影响[J].中国草地学报,2016,38(6):71-77.
[4]罗培,敖敦格日乐,P MYAGMARTSEREN,等.不同放牧方式对草场放牧压力的影响研究———以绵羊群日活动轨迹为视角[J].安徽农学通报,2018,24(23):102-105.
[5]赛西雅拉图,白丽艳,张萍.2003—2010年克氏针茅放牧草地资源的变化[J].草业科学,2014,31(4):607-613.
[6]刘珏宏,高慧,张丽红,等.内蒙古锡林郭勒草原大针茅—克氏针茅群落的种间关联特征分析[J].植物生态学报,2010,34(9):1016-1024.
[7]李潮,谢应忠,许冬梅,等.宁夏荒漠草原植物群落的种间关系[J].草业科学,2013,30(11):1801-1807.
[8]何光熊,闫帮国,纪中华,等.元谋干热河谷Savanna草地优势植物的种间关系[J].草业学报,2018,27(6):62-71.
[9]罗清虎,孙凡,崔羽,等.泥石流频发流域失稳性坡面主要植物种间关联性[J].应用与环境生物学报,2018,24(4):689-696.