Effect of Grazing Intensities on Vegetation and Soil in Meadow Steppe

doi:10.11733/j.issn.1007-0435.2010.06.002

›› 2010, Vol. 18 ›› Issue (6): 758-762.DOI: 10.11733/j.issn.1007-0435.2010.06.002

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Effect of Grazing Intensities on Vegetation and Soil in Meadow Steppe

WANG Ming-jun¹, ZHAO Meng-li², CUI Guo-wen¹, HAN Guo-dong²

1. The College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang Province 150030, China;
2. The College of Ecology and Environmental Science, Inner Mongolia Agriculture University, Hohhot, Inner Mongolia 010018, China

Received:2009-01-18 Revised:2010-10-22 Online:2010-12-15 Published:2010-12-15

放牧对草甸草原植被和土壤的影响

王明君¹, 赵萌莉², 崔国文¹, 韩国栋²

1. 东北农业大学动物科学技术学院, 黑龙江, 哈尔滨, 150030;
2. 内蒙古农业大学生态环境学院, 内蒙古, 呼和浩特, 010018

通讯作者: 韩国栋,E-mail:nmghangd@hotmail.com
作者简介:王明君(1981- ),男,博士后,讲师,研究方向为草地生态与管理,E-mail:nmgwangmj@163.com
基金资助:
国家自然科学基金项目(30060056);国家"十一五"科技攻关项目(2006BAD16B01);东北农业大学科研启动基金资助

Abstract

Abstract: A series of comparative sampling plots were applied to study effects of selected grazing intensities on the meadow steppe.Results show that long-term heavy grazing reduce grass biomass and fallen leaf cover.Both soil organic matter(SOM) and total nitrogen(TN) was significantly lower(P<0.05).Soil bulk density and soil sand particles increased while soil respiration decreased in heavy grazing areas.There are significant correlations between grassland vegetation and soil with different indexes.Factor analysis reduces these indicators to four main factors and classifies different grazing gradients.These results have significantly important application values for reasonable utilization and protection of grasslands.

Key words: Meadow steppe, Grazing intensities, Soil physical and chemical properties, Factor analysis

摘要： 应用典型样地法研究了放牧对草甸草原的影响,结果表明:长期重度放牧会导致草地现存量和枯枝凋落物减少,土壤有机质、全氮含量显著降低(P<0.05),土壤容重增大、土壤砂粒增加、土壤呼吸降低。草地植被、土壤各指标间存在显著的相关性,因子分析能够很好地将这些指标缩减为4个主因子,并能够将不同放牧梯度划分开,这对于草地合理利用及保护具有重要的应用价值。

关键词: 草甸草原, 放牧强度, 土壤理化性质, 因子分析

CLC Number:

WANG Ming-jun, ZHAO Meng-li, CUI Guo-wen, HAN Guo-dong. Effect of Grazing Intensities on Vegetation and Soil in Meadow Steppe[J]. , 2010, 18(6): 758-762.

王明君, 赵萌莉, 崔国文, 韩国栋. 放牧对草甸草原植被和土壤的影响[J]. , 2010, 18(6): 758-762.

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Effect of Grazing Intensities on Vegetation and Soil in Meadow Steppe

放牧对草甸草原植被和土壤的影响

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