The vegetation recovers gradually after forest cutting,which changes the original plant community composition and the soil ecological environment.In order to understand the effects of cutting on soil fauna communities,we investigated soil fauna community on the clear-cutting and unclear-cutting of Quercus mongolica + Betula davurica forestland and Larix olgensis plantation,respectively,in April and July,2011.Soil macrofauna was picked out by hands.Soil mesomicrofauna were extracted by Tullgren funnel.All extracted soil samples were identified to the suborder or family level under a stereoscopic microscope.Soil pH was measured with PHS-3B acidity meter.Soil organic C was determined by K2Cr207 oxidation method and total N by Kjeldahl method.Total P was analyzed by using the colorimetric method with molybdenum in sulphuric acid.It showed that the unclear-cutting Quercus mongolica + Betula davurica forestland had higher density (309.5 ind./m2),group number (30) and diversity index (3.13) of soil macrofauna as well as higher density (2.12 × 104 ind./m2),group number (22) and diversity (2.05) of soil meso-microfauna than the clear-cutting of Quercus mongolica + Betula davurica forestland.But the density,group number and diversity of soil fauna in the clear-cutting Larix olgensis plantation were lower than those in the unclear-cutting counterpart.Soil organic matter,total N (P ＜ 0.05) and pH (P ＜ 0.05) had significantly effect on soil fauna; while total P (P ＞ 0.05) and soil moisture content (P ＞ 0.05) had little effect on soil fauna.The study suggested that cutting has obvious effects on soil fauna community,with the extent of influence depending on the forestland type before cutting.
soil faunacharacteristics of communityclear-cutting forestlandunclear-cutting forestlandZuojia Nature Reserve
NETL
NSTL
维普
万方数据
