水土保持研究2012，Vol.19Issue(1)：42-45,4.
哈巴湖自然保护区草地植被数量波动探讨
Study on Fluctuation Ratio of Grassland Vegetation in the Haba Lake Natural Reserve of Ningxia Hui Autonomous Region
摘要
Abstract
Vegetation fluctuation is an important part of vegetation dynamics.Based on the meanings of ecology and statistics,and combined with the characteristics of grassland vegetation,fluctuation measure formula was built by the method of expert weighting.The grassland vegetation quantitative fluctuation and its fluctuation ratio between 2006 and 2010 were studied in Haba Lake Natural Reserve of Ningxia Hui Autonomous Region,the fluctuation was discussed from the number of features on the grassland.Results showed that the biggest positive fluctuation ratio was 0.381 in 2007,meaning the best vegetation growth during recent years.While the most negative fluctuation ratio was-0.350 in 2009,meaning the worst vegetation growth during this period.Vegetation fluctuation of grassland reflects the situation of vegetation growth and provides scientific basis for grassland management,as an effective method to forecast future grassland fluctuations.关键词
沙化草地/波动/波动率/权重/半干旱区Key words
sandy grassland/fluctuation/fluctuation ratio/weight/semi-arid area分类
农业科技引用本文复制引用
苏鹏飞,张克斌,王晓,庞吉林,王海星..哈巴湖自然保护区草地植被数量波动探讨[J].水土保持研究,2012,19(1):42-45,4.基金项目
国家自然科学基金项目 （）
国家林业局宁夏哈巴湖自然保护区荒漠化定位监测项目 （）
