基于草场生存评估模型的阿巴嘎旗北部牧户草场退化现状及原因分析  

Degradation degree and cause analysis of pastoral pasture in Abaqi Flag based on pasture survival assessment model

作　　者：罗培 赛西雅拉图[1] LUO Pei;Saixiyalatu(College of Geographical Science,Inner Mongolia Normal University,Hohhot 010022,China)

机构地区：[1]内蒙古师范大学地理科学学院

出　　处：《草原与草业》2019年第3期27-32,共6页Grassland and Prataculture

基　　金：国家自然科学基金项目(41561009);内蒙古师范大学研究生科研创新基金项目(CXJJS18104)

摘　　要：为客观评估阿巴嘎旗北部牧户草场退化现状及其成因,文章采用典型草原草场生存评估模型对该地区北部处于不同退化程度的3个牧户进行评估。结果发现退化程度为牧户A(轻度退化)<牧户B(中度退化)<牧户C(重度退化)。研究发现牧户草场退化与草场地上鲜生物量、植物盖度、植物种类、优良牧草等级、载畜量等因素有关。其中前4个要素反映了牧户草场承载力在时空的分布均匀情况,对牧户人为控制载畜量产生重要影响。为此,结合草地植物资源现状,因时因地合理放牧是抑制牧户草场退化的关键要素。In order to evaluate the degradation degree of grassland in the northern part of Abaqi Flag and its causesobjectively.Three herdsmen with different degrees of degradation in the northern part of the region were selected for evaluation of the typical grassland pasture assessment model.The results showed that the degree of degradation was herder A(Mild degradation)<herder B(moderate degradation)<herder C(severe degradation).The study found that herdland grassland degradation is related to fresh biomass,plant cover,plant species,fine pasture grade,and stock carrying capacity.The first four elements reflect the uniform distribution of the carrying capacity of the herdsmen's pastures in time and space,and have an important impact on the herdsmen's control of the carrying capacity.To this end,combined with the status quo of grassland plant resources,rational grazing due to time and place is a key factor to inhibit the degradation of pastoral grassland.

关 键 词：草场退化 典型草原 植物群落演替 牧草饲用价值 

分 类 号：S812[农业科学—草业科学]