Yin Hang, Piao Shunji, Wang Zhenjie, Yan Xiuling, Zhang Bincai, Zhai Jiwu, Ding Yong
College of Life Science, Inner Mongolia University, Huhhot, China.
Ying Yong Sheng Tai Xue Bao. 2006 Jul;17(7):1169-73.
Based on the analysis of species important values and Shannon-Wiener index of Artemisia halodendron community on different type sandy lands in Horqin, A. halodendron community was classified into three types, i. e., A. halodendron - annual herbage, A. halodendron - perennial grass, and A. frigida - A. scoparia + perennial grass, which distributed on shifting sandy land, semi-fixed sandy land, and fixed sandy land, respectively. With the sand fixed, the community succession was ranked from A. halodendron - annual herbage (pioneer stage, coverage < 10%, Shannon-Wiener index 0. 33) to A. halodendron - perennial grass (coverage 30% to approximately 35%, Shannon-Wiener index 0. 56), and then to A. frigida - A. scoparia + perennial grass (steppe community, coverage 40% to approximately 45%, Shannon-Wiener index 0. 59). The A. halodendron population on shifting sandy land and that planted 5 years ago showed growing age distribution, that planted 18 years ago showed stable age distribution, and that on semi-fixed and fixed sandy lands showed declining age distribution. The results proved that A. halodendron populations had different ecological effects on A. halodendron community.
通过对科尔沁不同类型沙地差巴嘎蒿群落的物种重要值和香农-威纳指数进行分析，差巴嘎蒿群落被划分为三种类型，即差巴嘎蒿-一年生草本群落、差巴嘎蒿-多年生草本群落和冷蒿-猪毛蒿+多年生草本群落，它们分别分布在流动沙地、半固定沙地和固定沙地上。随着沙地的固定，群落演替顺序为差巴嘎蒿-一年生草本群落（先锋阶段，盖度<10%，香农-威纳指数0.33）、差巴嘎蒿-多年生草本群落（盖度30%至约35%，香农-威纳指数0.56），再到冷蒿-猪毛蒿+多年生草本群落（草原群落，盖度40%至约45%，香农-威纳指数0.59）。流动沙地上以及5年前种植的差巴嘎蒿种群呈增长型年龄分布，18年前种植的呈稳定型年龄分布，半固定沙地和固定沙地上的呈衰退型年龄分布。结果表明，差巴嘎蒿种群对差巴嘎蒿群落具有不同的生态效应。
