Soil moisture and nutrient characteristics of soil and water conservation forests in Loess Plateau of western Shanxi Province
In order to explore soil moisture and nutrient characteristics of soil and water conservation forests, we investigated soil moisture, soil nutrients and root density of three types of forests, i.e.,Pinus tabulaeformis plantation, Robinia pseudoacacia plantation and secondary forest in Loess Plateau of western Shanxi Province, using EnviroSMART soil moisture monitoring system.The results showed that: 1) The average moisture content of 0-150 cm soil layer in three types of forests was ranked as secondary forest ＞ P.tabulaeformis plantation ＞ R.pseudoacacia plantation.2) In general, the monthly changes of soil moisture in secondary forest and R.pseudoacacia plantation were consistent, while it was more volatile in the P.tabulaeformis plantation.The soil moisture contentin secondary forest was higher than that in the R.pseudoacacia plantation.3) The total root density in 0-30 cm soil layer followed the order of secondary forest ＞ R.pseudoacacia plantation ＞ P.tabulaeformis plantation, and the density decreased with the increase of soil depth.4) In all the three forest types, there was a significantly negative correlation between soil moisture content and root density in 0-30 cm soil depth.5) In the 0-30 cm depth, the contents of soil organic matters, total phosphorus and total potassium in secondary forest were significantly higher than those in the R.pseudoacacia and P.tabulaeformis plantations, with little difference between the latter two types of plantation.6) Contents of organic matters and total potassium decreased with the increase of soil depth, while no obvious change in total phosphorus content was found with the increase of soil depth in three types of forests.
soil moisture contentsoil organic mattertotal phosphorustotal potassiumsoil and water conservation forestloess area
国家科技期刊平台
NSTL
万方数据
维普
