[1]MA Fulin,YANG Yongsheng,WANG Junbang,et al.Temporal Heterogeneity and Dominant Factors of Soil Water Content in the Grassland in the Northern Qinghai Province[J].Research of Soil and Water Conservation,2020,27(04):178-183.
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Temporal Heterogeneity and Dominant Factors of Soil Water Content in the Grassland in the Northern Qinghai Province
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 04
Page number:
178-183
Column:
目次
Public date:
2020-06-20
- Title:
- Temporal Heterogeneity and Dominant Factors of Soil Water Content in the Grassland in the Northern Qinghai Province
- Keywords:
- soil water content; temporal heterogeneity; semi-variogram models; northern Qinghai Province; grassland
- CLC:
- S152.7
- DOI:
- -
- Abstract:
- In order to explore the temporal heterogeneity of soil moisture in the grassland of the northern Qinghai Province, a cell location monitoring experiment was adopted. Soil water content of root zone(0—0.7 m)in typical grassland in the growing season(April to September)from 2009 to 2012 was obtained and the temporal heterogeneity of soil moisture was analyzed by classical statistics and geostatistics methods. The results showed that the temporal heterogeneity of soil water content in 0—0.7 m layer of Stipap urpurea in the northern Qinghai Province decreased with increase of depth, and the variability of soil water content usually remained at moderate degree; semi-variogram model had a high degree of fitness for soil water content temporal heterogeneity; the temporal heterogeneity of soil water content in grassland was the highest in 2011 and the lowest in 2012; the temporal variability of soil water content in the study area was mainly affected by soil depth, vegetation coverage and precipitation; the three controlling factors together explained the time variation of soil water content by 51.5%. These results have the scientific and practical significance for understanding the temporal dynamic characteristics of soil water content and enhancing the scientific management of valuable soil moisture in the grassland ecosystem of the Qinghai Province.
- References:
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Last Update:
2020-07-09