摘要
以若尔盖高寒草地不同治理措施(未控鼠、药剂+鹰架控鼠、药剂+植被控鼠、无鼠害发生)鼠害地为研究对象,分别于两个植物生长物候阶段(返青期、植物生长旺盛期)取样测定土壤不同剖面(0~10cm、10~20cm、20~30cm)容重、土壤含水量、土壤有机碳含量,并在生长旺盛期开展植物群落调查。结果表明:(1)采取治理措施的高寒鼠害地植物群落指数、土壤有机碳含量均优于未控鼠样地,且药剂+鹰架控鼠样地(148.95±7.00g/kg)较药剂+植被控鼠样地(45.13±5.00g/kg)土壤有机碳含量显著(P<0.05)提高。(2)0~30cm土壤有机碳含量随土层深度增加递减,0~10cm、10~20cm、20~30cm分别占46%、31%、23%。生长旺盛期的土壤有机碳储量(15.10±10.60kg/m^(2))显著低于返青期(20.87±16.55kg/m^(2)),药剂+鹰架控鼠样地>药剂+植被控鼠样地>无鼠害发生样地>未控鼠样地。(3)返青期土壤有机碳含量与土壤含水量具有非常显著的线性回归关系(P<0.01),生长旺盛时期土壤有机碳含量与土壤容重有显著(P<0.05)的负相关关系。本研究揭示了不同治理措施鼠害地土壤有机碳含量的差异及其剖面分布特征,为鼠害治理及鼠荒地土壤碳储量变化提供了一定的理论依据。
Taking different control measures of Zoige alpine rodent-infested grassland(Non-control,Rodenticide&vegetation control,Rodenticide&scaffold control,Non-rodent damage)as the research object,the research was conducted in two growing stages of plant growth(regreening stage and vigorous growing stage),samples were taken to measure soil bulk density,soil water content and soil organic carbon at different layers(0~10 cm,10~20 cm,20~30 cm),and plant community surveys were carried out during the vigorous growing stage.The results showed that:(1)The plant community index and soil organic carbon content of the alpine rodent-infested plot with control measures were better than those of the Non-control plot,and the Rodenticide&scaffold control(148.95±7.00 g/kg)was significantly(P<0.05)higher than that of the Rodenticide&vegetation control plot(45.13±5.00 g/kg).(2)The organic carbon content of 0~30 cm soil decreased with the increase of soil depth,and 0~10 cm,10~20 cm,and 20~30 cm accounted for 46%,31%,and 23%,respectively.The soil organic carbon storage in the vigorous growing stage(15.10±10.60 kg/m^(2))was significantly lower than that in the regreening stage(20.87±16.55 kg/m^(2)).Rodenticide&scaffold control>Rodenticide&vegetation control>Non-rodent damage plot>Non-control plot.(3)There was a very significant linear regression relationship between soil organic carbon content and soil water content in the regreening stage(P<0.01),and a significant negative correlation between soil organic carbon content and soil bulk density in the vigorous growing stage(P<0.05).This study revealed the differences in soil organic carbon content and its vertical distribution characteristics in rodent-infested fields with different control measures,and provided a theoretical basis for rodent-infestation control and changes in soil carbon storage in rodent-infested grassland.
作者
王一博
孙飞达
李林昊
张婷婷
周俗
杨廷勇
Wang Yibo;Sun Feida;Li Linhao;Zhang Tingting;Zhou Su;Yang Tingyong(SiChuan Agricultural University,Chengdu 611130,China;Sichuan Research Academy of Forestry Science and Technology,Chengdu 610081,China;Ganzi State Grassland Workstation,Kangding 626000,China)
出处
《草学》
2022年第5期28-38,44,共12页
Journal of Grassland and Forage Science
基金
四川省科技厅国际交流合作项目“川西北草原高寒鼠荒地形成机理及恢复模式研究”(20GJHZ0115)
四川省林业和草原局“若尔盖地区沙地林草植被恢复及草原鼠害防控技术推广项目”(510201202109731)共同资助。
关键词
高原鼠兔
土壤有机碳
土壤理化性质
高寒草地
鼠荒地治理
alpine pika
soil organic carbon
soil physical and chemical properties
alpine grassland
rodents damage management
