内蒙古天然草地退化成因的多因素灰色关联分析  

Grey incidence analysis of factors affecting grassland degradation in Inner Mongolia

作　　者：郝璐[1] 高景民[2] 杨春燕[3] 

机构地区：[1]内蒙古生态与农业气象中心 [2]内蒙古工业大学人文与社会科学学院,内蒙古呼和浩特010062 [3]北京师范大学图书馆,北京100875

出　　处：《草业学报》2006年第6期26-31,共6页Acta Prataculturae Sinica

基　　金：中国气象局气候变化专项项目(CCSF2006-17);中国气象局气象新技术推广项目(CMATG2006M27)资助

摘　　要：选取内蒙古草地典型草原、草甸草原及农牧交错带典型区,通过对区域内影响草地退化的社会、经济和环境等因素进行定性分析,应用灰色系统理论的关联分析方法,以草地退化面积为参考数列,以牧草生长季积温、降水变率和年大风日数等气候因子,草地超载比例、人工种草与围栏草场面积、年割草量、畜棚与畜圈面积和牧民人均收入等人类活动因子作为比较数列,对草地退化进行了多因素关联分析。研究结果客观、定量地揭示了草地退化与各因素间的相互关系,认为草地生态系统的退化受损是气候变化和人类活动共同胁迫的结果,人类对草地的管理方式对草地生态系统具有巨大影响,人类可以通过多种管理措施来减轻牲畜对草场的压力,积极解决人与资源的平衡。The typical grassland, meadow and ecotone between agriculture and animal husbandry in tuner lvtongolia were selected, and various kinds of factors influencing grassland degradation such as the society, economy, and environment in these regions were used for a grey incidence analysis of grassland degradation. The degraded grassland area was chosen as a reference series. Several climatic factors, including accumulated air temperature, relative variability of annual precipitation during grass growth （Apr. -Sep. ）, severe wind days, and some human activity factors such as overloaded proportion of pastureland, total amount of artificial grassland areas, forage sown areas, enclosure grassland areas, annual amount of mown grass, annual net income per-capita in pasture, etc. were chosen as the comparative series. The degree of grey incidence was calculated. The quantitative results of the relationship between degraded grassland and the above factors showed that grassland degradation results from climate change and human activities, and that mankind＇s management has an enormous influence on the grassland ecosystem. Good management can lighten the pressure of livestock on grasslands through many kinds of measures to actively maintain the balance of people and resources.

关 键 词：草地退化 成因 灰色关联度分析 内蒙古草地 

分 类 号：S812[农业科学—草业科学]