一种基于轨迹数据的放牧强度估算方法

A grazing intensity estimation method based on trajectory data

放牧强度直接影响草地生态系统的稳定和可持续发展。为指导牧民合理放牧以保证草畜平衡,笔者提出一种分布型放牧强度估算方法,首先对轨迹数据进行聚类分析,得到牲畜的不同觅食区域;然后估算各觅食区域的面积和区域内觅食羊只总数,得到各觅食区域放牧强度;最后对真实牲畜轨迹数据进行分析并估算苏尼特左旗某二牧区放牧强度,对放牧强度估算结果进行抽样和实地验证。结果表明:该方法能够有效估算不同觅食区域的放牧强度,明确区分不同过牧区域的过牧程度。

The grazing intensity directly affects the stability and sustainable development of grassland ecosystems.In order to guide herdsmen to graze reasonably and ensure the balance of grass and livestock,the aothor proposed a method for estimating grazing intensity.Firstly,cluster analysis of trajectory data was carried out to know different foraging areas of livestock.Then by estimating the area of each foraging area and the total number of foraging sheep in the area,the grazing intensity of each foraging area was obtained.This method is used to analyze the real livestock trajectory data and estimate the grazing intensity of a second pastoral area in Sonid Left Banner.Finally,the sampling results of grazing intensity estimation were verified in the field.The results show that this method can effectively estimate the grazing intensity of different foraging areas,and clearly distinguish the grazing degree of different overgrazing areas.