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- Title
不同尺度下荒漠草原建群种短花针茅的空间分布对载畜率的响应.
- Authors
张峰; 孙嘉伟; 孙宇; 郑佳华; 乔荠瑢; 赵天启; 陈大岭; 赵萌莉
- Abstract
We conducted an experiment to test the characteristics and differences of the spatial distribution of constructive species Stipa breviflora at different scales under different stocking rates in the S. breviflora desert steppe in Siziwang Banner, Inner Mongolia. The spatial distribution of S. breviflora under four treatments (control, light grazing, moderate grazing, and heavy grazing) at different scales (small scale as 1 m×1 m and mesoscale as 5 m×10 m) were analyzed. The results showed that the population density of S. breviflora at mesoscale in the control and light grazing was significantly lower than that at the small scale. Grazing significantly increased the population density of S. breviflora in the meso- and small scales. At the small scale, the population distribution of S. breviflora in the control, light grazing, moderate grazing, and heavy grazing treatments conformed to linear, exponential, exponential and exponential models, respectively, and Gaussian, exponential, Gaussian and exponential models at mesoscale fitted by semi-variance function. The spatial distribution pattern at small scales in the control was simple and better but was more complex and poorer under the heavy grazing. At the mesoscale, it was simple and better under the heavy grazing but complex and poor under the moderate grazing. The spatial heterogeneity of S. breviflora population reduced and were more uniform under the moderate and heavy grazing at meso- and small scales. In addition, the trend of population distribution in the enclosure, moderate and heavy grazing were generally the same, while light grazing showed inconsistent trend at different scales.
- Subjects
INNER Mongolia (China); GRAZING; POPULATION density; STIPA; SPECIAL effects in lighting; SPECIES distribution; FISH stocking
- Publication
Yingyong Shengtai Xuebao, 2021, Vol 32, Issue 5, p1735
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.202105.006