[1]ZHANG Fei,Tashpolat·Tiyip,DING Jian-li,et al.Application of Salt Distribution Chemical Field Theory in Soil Salination in Arid Oasis—A Case Study in the Delta Oasis Of Weigan and Kuqa Rivers[J].Research of Soil and Water Conservation,2008,15(04):88-93,97.
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
15
Number of periods:
2008 04
Page number:
88-93,97
Column:
Public date:
2008-08-20
- Title:
-
Application of Salt Distribution Chemical Field Theory in Soil Salination in Arid Oasis—A Case Study in the Delta Oasis Of Weigan and Kuqa Rivers
- Author(s):
-
ZHANG Fei1,2, Tashpolat·Tiyip1, DING Jian-li1, HE Qi-sheng3
-
1. R & E Department of Xinjiang University, Key Laboratory of Oasis Ecology, Xinjiang University, Ministry of Education, Urumqi 830046, China;
2. Graduate school of Xinjiang University with Academic Degrees Committee, Urumqi 830046, China
-
- Keywords:
-
the delta oasis of Weigan and Kuqa rivers; salinization; salt distribution field in water-soil environment; variogram function
- CLC:
-
S156.4
- DOI:
-
-
- Abstract:
-
In this paper,author has proposed the delta oasis of Weigan and Kuqa rivers which are located in the North of Tarim Basin considered as the typical area. According to regional distribution characteristics of salt in water-soil environment,the theories of Salt Distribution Field in water-soil Environment are applied. Variation function offered is used to model quantitatively space differentiation of salt in water-soil environment,thus,the Geostatistics is used in soil science to explore its spatial distribution characteristics and its variability law,which has been advocated by more and more experts. The fundamental of geostatistics and its utilization in soil spatial variability on soil physical characteristics,soil conductivity and salt content were reviewed in this paper. Geostatistics combined with GIS was applied to analyze the spatial variability of soil conductivity and salt content in topsoil in the delta oasis of Weigan-Kuqa rivers. In this paper,the research which was based on Kriging method,was handled by ArcGIS. GIS can integrate attribute data with geographical data of system variables,which makes the application of geostatistics technique for large spatial scale more convenient. It is showed that the spatial correlation of topsoil conductivity and salt content at this large scale were strongly dependent,the proportion of Nugget and Sill is 44.72% and 38.61%. Variance coefficient is 0.634 and 0.618. Then choosing proper Kriging model,verifying of the Cross-Validation and correcting the parameters are important factors influencing accurate analysis. At last,this method is applied by integrating experimental data in saline soil of the delta oasis of Weigan and Kuqa rivers,and get EC,salt content sample in saline badlands,at the same time,get different direction EC,salt content sample variance. This theories can be used quantificationally study on saline and alkaline water-soil environment.