首页|若尔盖高寒退化草地高原鼠兔防控生态经济阈值初探

若尔盖高寒退化草地高原鼠兔防控生态经济阈值初探

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  • NSTL
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  • 维普
[目的]探讨高寒草甸草地鼠害监测与防控中的生态经济阈值,为草原鼠害益害转化临界值与科学防控提供参考.[方法]基于若尔盖县麦溪乡高原鼠兔的夏季防控模式,利用鼠密度与牧草损失量建立回归模型,遴选三次曲线方程(y=a+bx+cx2+dx3)为最优模型,当防控成本与防控收益等价时的鼠密度为经济损害水平,得到鼠害防控的经济阈值;并在经济阈值的基础上考虑防控因素造成的生态代价,对药剂生态风险指数进行估算,得到生态经济阈值.[结果]得到若尔盖县高原鼠兔经济阈值为115个/hm2,生态经济阈值为127个/hm2.[结论]在若尔盖县鼠害密度达到127个/hm2时进行综合防控,能够保证高经济效益的同时达到草地的可持续利用.
Preliminary Study on Ecological-Economic Threshold of Rodent Control in Zoige Alpine Degraded Grassland
[Objective]In order to explore the ecological and economic threshold of rodent monitoring and control in alpine meadow,and to provide reference for the critical value of grassland rodent benefit-harm damage transformation and scientific prevention and control.[Method]Based on the summer prevention and control model of plateau pika in Maixi Township,Ruoergai County,the regression model was estab-lished by using rat density and forage loss,and the cubic curve equation(y=a+bx+cx2+dx3)was selected as the optimal model.When the control cost and control benefit were equal,the rodent density was the economic damage level,and get the economic threshold of rodent pest prevention and control.On the ba-sis of economic threshold,the ecological cost caused by control factors was considered,and the ecologi-cal risk index of pharmaceutical was estimated,and the ecological economic threshold was obtained.[Result]The economic threshold of the plateau pika in Ruoergai County was 115 active burrows/hm2,and the ecological economic threshold was 127 active burrows/hm2.[Conclusion]Therefore,when the rodent density in Ruoergi County reaches 127 effective burrows/hm2,comprehensive control can ensure high economic benefits and achieve sustainable use of grassland at the same tome.

Ochotona curzoniaedegraded grasslandrodent infestationeconomic thresholdecological economic threshold

何秋霞、张荞荞、陈德炜、唐明坤、王钰、韩彬茹、孙飞达、周俗

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四川农业大学草业科技学院,成都 611300

四川省林业科学研究院,成都 610081

高原鼠兔 退化草地 鼠害防控 经济阈值 生态经济阈值

四川省林业和草原局推广项目国家自然科学基金四川省科技厅项目国家现代农业产业技术体系四川饲草创新团队专项建设

510201202109731322717752022YFS0483sccxtd-2020-16

2024

10.16036/j.issn.1000-2650.202306314

四川农业大学学报
四川农业大学

四川农业大学学报

CSTPCD北大核心
影响因子：0.657
ISSN：1000-2650
年,卷(期)：2024.42(1)
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