高寒草甸健康评价方法的研究与应用
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李帅(1991-),辽宁阜新人,硕士,研究实习员,研究方向为草地生态。E-mail:lishuai9255@163.com

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S812.5

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四川省公益性科研院所基本科研业务费项目;贵州省科技计划项目(黔科合支撑[2019]2857号);甘肃省教育厅产业支持计划项目 (2021CYZC-05)


Research and application of health assessment method in alpine meadow
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    摘要:

    本研究以服务于基层草地管理者及牧民为目标,研发科学、便捷、实用的高寒草甸健康评价方法。以甘肃省天祝县高寒草甸区为例,选择5块不同放牧强度的草地,进行健康状况评价。选取反映高寒草甸健康状况的生态指标(总盖度、群落层片结构和风蚀/水蚀状况)以及生产指标(总产草量、可食牧草比例和新鼠丘/鼠洞密度),并利用层次分析法和数据包络分析法计算指标权重组,运用灰色关联度法构造出最优指标集合。分别采用目测法、步测法、干重排序法等获得相应指标数据。结果表明:各指标权重为总盖度(0.232)、群落层片结构(0.341)、风蚀/水蚀(0.277)、总产草量(0.103)、可食牧草比例 (0.037)、新鼠丘/鼠洞密度(0.011);5块不同放牧强度草地(A1- A5)健康评价结果为:A1亚健康(68 分)、A2健康(80分)、A3亚健康(79分)、A4亚健康(74分)、A5警告(55分)。本研究研发的草地健康评分表便于基层草地管理者及牧民对拟监测的高寒草甸健康状况进行监测评价。

    Abstract:

    A health assessment technology in alpine meadow for grass-roots grassland managers,technicians and farmers has been developed.Taking the alpine meadow area of Tianzhu County,Gansu Province as an example,five grassland with different grazing intensity were selected to carry out the application of health status assessment technology.The ecological index (total coverage,the layer structure and wind/water erosion conditions) and the production index (total yield and edible grass proportion and new molehills/rat hole density) that reflects the health of the alpine meadow were selected for the study.Analytic hierarchy process (ahp) and data envelopment analysis method was used to calculate index right of restructuring.The optimal index set is constructed by applying the method of grey correlation degree.The corresponding index data were obtained by visual observation,step survey,and dry weight rank method.The results showed that the weight of each index was as follows:total coverage (0.232),community layer structure (0.341),wind/water erosion (0.277),total forage yield (0.103),edible forage ratio (0.037),new rodent mounds or holes density(0.011).The health evaluation results of five different grazing intensities (A1-A5) were as follows:A1 sub-health (68 points),A2 health (80 points), A3 sub-health (79 points),A4 sub-health (74 points) and A5 warning (55 points).The grassland health assessment technology in this study is convenient for grass-roots grassland managers,technicians and farmers to monitor and evaluate the health status of alpine meadow to be monitored.

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李帅,花立民,杨思维.高寒草甸健康评价方法的研究与应用[J].草原与草坪,2022,(2):1-10

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  • 在线发布日期: 2022-05-26
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