JOURNAL OF NATURAL RESOURCES ›› 2011, Vol. 26 ›› Issue (7): 1227-1235.doi: 10.11849/zrzyxb.2011.07.015

• Resources Evaluation • Previous Articles     Next Articles

Spatial Distribution Characteristics of Soil Moisture-physical Properties in Water Conservation Forest in Lianhua Lake Reservoir Area

DUAN Wen-biao, CHEN Li-xin, YAN Yong-qiang   

  1. College of Forestry, Northeast Forestry University, Harbin 150040, China
  • Received:2009-03-10 Revised:2011-01-16 Online:2011-07-20 Published:2011-07-20

Abstract: Spatial distribution characteristics of soil moisture-physical properties in water conservation forest of Pinus koraiensis in Lianhua Lake reservoir area were analyzed by geostatistics. The results showed soil moisture content, soil bulk density, capillary porosity and non-capillary porosity all exhibited lognormal distribution. The optimum fitting model for capillary porosity was spherical model; that for the other factors was exponential model. For soil moisture content, soil bulk density, capillary porosity and non-capillary porosity, their nuggets, effective ranges, proportions, fractal dimensions and maximum Moran’s I were 0.311, 0.297, 0.192, 0.293; 6.87 m, 10.29 m, 8.31 m, 8.88 m; 0.690, 0.694, 0.814, 0.707;1.968, 1.939, 1.937, 1.945; 0.111, 0.200, 0.246, 0.157, respectively. Therefore, the spatial autocorrelation of soil moisture-physical properties was strong, and the correlation decreased with the increase of separation distance. Capillary porosity had conspicuous homogeneous character, and soil moisture content had complicated spatial distribution and high degree of fragmentation.

Key words: conservation forest, soil moisture-physical properties, geostatistics, spatial heterogeneity, Lianhua Lake

CLC Number: 

  • S714.2