当前位置: 首页 > 文章 > 放牧强度对荒漠草原建群种短花针茅空间分布异向性的影响 中国草地学报 2016,38 (5) 71-77
Position: Home > Articles > Effect of Grazing Intensity on Spatial Distribution Aeolotropy of Stipa breviflorain Desert Steppe Chinese Journal of Grassland 2016,38 (5) 71-77

放牧强度对荒漠草原建群种短花针茅空间分布异向性的影响

作  者:
殷国梅;吕世杰;刘红梅;薛艳林;刘永志;慕宗杰
单  位:
内蒙古农业大学理学院;内蒙古自治区林业科学院;内蒙古自治区农牧业科学院
关键词:
短花针茅;空间分布;异向性;半方差函数;分形维数
摘  要:
以荒漠草原建群种短花针茅为对象,采用半方差函数和分形维数分析研究放牧强度对其空间分布异向性的影响。结果表明:在0°、45°和90°方位上,放牧导致短花针茅在样地方位内总的空间变异性加大,且在0°和90°方位上随放牧强度增加而增大;在135°方位上,放牧使短花针茅空间分布趋于均匀化。0°方位上短花针茅空间分布分形维数随着放牧强度的增加而减小,45°方位上只有LG区的分形维数高于CK区,在90°和135°方位上,放牧区的分形维数高于CK区。
译  名:
Effect of Grazing Intensity on Spatial Distribution Aeolotropy of Stipa breviflorain Desert Steppe
作  者:
YIN Guo-mei;LV Shi-jie;LIU Hong-mei;XUE Yan-lin;LIU Yong-zhi;MU Zhong-jie;Inner Mongolia Academy of Agricultural & Animal Husbandry Science;College of Science,Inner Mongolia Agricultural University;Inner Mongolia Academy of Forestry;
关键词:
Stipa breviflora;;Spatial distribution;;Aeolotropy;;Semivariance function;;Fractal dimension
摘  要:
The influence of grazing intensity on the spatial distribution aeolotropy of Stipa breviflora in desert steppe was analyzed by using semivariance function and fractal dimension method.The results showed that grazing can cause the increase of overall spatial variability of Stipa breviflorain sampling plot within 0°,45°and 90°location.Spatial variability increased with the increase of grazing intensity in 0°and 90°direction.In the 135°direction,grazing made spatial distribution of Stipa breviflorato be homogenization.Spatial distribution fractal dimension of Stipa breviflora decreased with the increase of grazing intensity in 0°bearing in the same location,only the fractal dimension in light grazing was higher than CK in 45°direction.The fractal dimension grazing paddock was higher than CK in 90°and 135°direction.

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