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刘丽,花立民,杨思维,周建伟,王巧玲,王贵珍,楚彬,周延山.2015.放牧干扰下高原鼢鼠栖息地选择因素.动物学杂志,50(5):725-734.
放牧干扰下高原鼢鼠栖息地选择因素
The Habitat Selection of Plateau Zokor (Myospalax baileyi) under Grazing Disturbance
投稿时间:2015-04-07  修订日期:2015-09-10
DOI:DOI: 10.13859/j.cjz.201505008
中文关键词:  高原鼢鼠  放牧干扰  植被性状  土壤特性
英文关键词:Plateau zokor (Myospalax baileyi)  Grazing disturbance  Vegetation characteristics  Soil characteristics
基金项目:国家自然科学基金项目(No. 31460635),甘肃省国际科技合作项目(No.2013GS06893);
作者单位E-mail
刘丽 甘肃农业大学 liull022013@126.com 
花立民 甘肃农业大学 hualm@gsau.edu.cn 
杨思维 甘肃农业大学草业学院 甘肃农业大学-新西兰梅西大学草地生物多样性研究中心 兰州 730070  
周建伟 甘肃农业大学草业学院 甘肃农业大学-新西兰梅西大学草地生物多样性研究中心 兰州 730070  
王巧玲 甘肃农业大学草业学院 甘肃农业大学-新西兰梅西大学草地生物多样性研究中心 兰州 730070  
王贵珍 甘肃农业大学草业学院 甘肃农业大学-新西兰梅西大学草地生物多样性研究中心 兰州 730070  
楚彬 甘肃农业大学草业学院 甘肃农业大学-新西兰梅西大学草地生物多样性研究中心 兰州 730070  
周延山 甘肃农业大学草业学院 甘肃农业大学-新西兰梅西大学草地生物多样性研究中心 兰州 730070  
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中文摘要:
      摘要:以祁连山东段高寒草甸栖息的高原鼢鼠(Myospalax baileyi)为研究对象,探讨放牧干扰下高原鼢鼠适合栖息地选择的影响因素,为合理控制草原鼠害和保护生物多样性提供科学依据。在5个不同放牧强度小区中,连续3年监测高原鼢鼠相对种群密度变化,同时获取植被和土壤的变化数据。分析高原鼢鼠相对种群密度、植被(盖度、高度、频度、植被生物量、植被均匀度、丰富度、多样性和地下根系生物量)和土壤(紧实度、容重、水分)之间的关系。中度放牧干扰下,高原鼢鼠相对种群密度最低,不利于对栖息地的选择,轻度、次轻度放牧区的高原鼢鼠相对种群密度高于重度、次重度放牧区的;轻度放牧干扰的草地有利于高原鼢鼠种群数量的增加。高原鼢鼠相对种群密度与土壤紧实度、容重呈显著负相关(R =﹣0.921、﹣0.883,P < 0.05);与土壤水分呈显著正相关(R = 0.879,P < 0.05);高原鼢鼠相对种群密度与地下根系生物量呈极显著正相关(R = 0.982,P < 0.01),与植被丰富度呈显著正相关(R = 0.921,P < 0.05),与地上植被总盖度呈显著正相关(R = 0.909,P < 0.05),与地上生物量、均匀度、多样性呈正相关但不显著(P > 0.05)。在草地放牧干扰系统中,非生物因素土壤紧实度、水分可能是高原鼢鼠栖息地选择的首要选择因素,食物资源也许是次要选择因素。
英文摘要:
      Abstract:The paper studied the influence factors of habitat selection by the plateau zokor (Myospalax baileyi) in alpine meadow in eastern Qilian Mountain under five grazing intensity. Providing a scientific basis for control grassland pest reasonably and biodiversity protection. In the five different grazing intensity areas, including heavy grazing (Ⅰ), secondary heavy grazing (Ⅱ), moderate grazing (Ⅲ), secondary light grazing (Ⅳ), and light grazing (Ⅴ). And monitoring relative plateau zokor population density, vegetation and soil change for three consecutive years, with the increased number of new mounds per unit area for three years to represent the plateau zokor population density (Table 1).The investigation method of grassland vegatation depended on the book of grass work technical guide, vegetation coverage, height, frequency, aboveground biomass and plant roots’ biomass were measured. the relatively important value of plant species in the community based on the plants’ relative coverage, relative frequency and relative height, then according to the important value to calculate the species’ uniformity (Je), abundance (He′) and diversity index (λ). And got the soil compaction by the soil compactness meter (SC-900, USA Spectrum). The index of relative zokor population density, vegetation (coverage, height, frequency, biomass) and soil (compaction, bulk density, moisture) were measured. Using SPSS (Statistical Product and Service Solutions) software to analyze the correlation between the relative population density of zokor and the other indexs, and also analyzed the difference of all indexs in five test plots in addition to the relative population density of zokor. The results showed that the relative population density of the zokor was lowest under the moderate grazing in five grazing intensity, which means the rangeland was not the zokor favorite habitat. However, the relative population density of the zokor in light grazing and minor grazing rangeland were higher than that in heavy grazing and extreme grazing rangeland. The rangeland under light grazing fitted the zokor’ inhabitation (Fig. 1). There were the significant positive correlation between the relative population density of zokor and the root biomass (R = 0.982, P < 0.01, Fig. 2b), vegetation abundance (R = 0.921, P < 0.05, Fig. 2d), and vegetation coverage (R = 0.909, P < 0.05, Fig. 2f). Aboveground biomass (R = 0.841, Fig. 2a), evenness (R = 0.873, Fig. 2c) and diversity (R = 0.921, Fig. 2e) were positively correlated but no significant (P > 0.05). There were the significant negative correlation (P < 0.05) between the relative population density of zokor and the soil compaction (R = -0.921, Fig. 3a,), soil bulk density (R = -0.883, Fig. 3b). And the significant positive correlation (R = 0.879, P < 0.05, Fig. 3b) with the soil moisture. The date suggest that the soil compaction was maybe the key factor that influence the habitat selection of the plateau zokor and the food was a secondary factor in the grassland grazing systems.
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