Soil Chemical Properties of Sand-fixing Forests in Maowusu Sandland
With the method of representative investigation and laboratory analysis, the study on the effects of different sand-fixing forests on soil chemical properties in Maowusu Sandland was carried out. The results in 0～40cm soils layer were given as follows. Organic matter and total nitrogen of soil was: Hedysarum scoparium forest＞Salix psammophila forest＞Hedysarum mongolicum forest＞Hippophae rhamnoides forest＞20 years Pinus sylvestris var.mongolica forest＞Bare sand. Total phosphor and available phosphor of soil was: Salix psammophila forest＞Hedysarum scoparium forest＞Hedysarum mongolicum forest＞Hippophae rhamnoides forest＞20 years Pinus sylvestris var. mongolica forest＞Bare sand. Available potassium of soil was: Hedysarum scoparium forest＞Hedysarum mongolicum forest＞Hippophae rhamnoides forest＞Salix psammophila forest＞20 years Pinus sylvestris var. mongolica forest＞Bare sand. With the forest stand age increased, organic substance, total nitrogen, available nitrogen, total phosphor, available phosphor, total potassium and available potassium increased, while the pH decreased. In soil profile, the soil nutrients in top layer of sand-fixing forest were a little higher than in sub-top layer except available nitrogen and pH. The effects of Hedysarum scoparium forest and Salix psammophila forest on soil chemical properties are remarkable.
Maowusu SandlandSand-fixing forestSoil chemical properties
NETL
NSTL
万方数据
维普
