Dynamic Of Soil Animals During The Stump Decomposition Of Broad-leave Korean Pine Forest

The forest soil animal which is one segment of the forest ecosystem system, as well as the important consumer and disintegrators, have important meaning that can't be replaced. The broad-leave Korean pine forest is the typical zonal vegetation in the northeast region. After select cutting, survirived stumps in the broad-leave Korean pine forest are resolved gradually under the common function of the soil animal and of the microorganisms. This paper is an importance part of the research on forest ecosystem system, and hope it will provide the important theories and the foundation data to be according for decomposition process of the forest ecosystem system attended by the soil animal.Stumps of Pinus koraiensis, a constructive species, Betula platyphylla and Fraxinus mandshurica which are both perdominant in the broad-leave Korean pine forest, are chosen as the research object. In August of 2004 and June of 2005,the vestigial of the disaggrega stumps with the 14yrs across are selected respectively twice, separated large soil animal and the middle- small scaled one among them, authenticateding the category, and statistics to be counted .Then the research analyze the dynamic state variety of the soil animal during the process of stumps decomposition.The soil animals are total 647ses,separation from three kinds of stump, among them the large soil animal is 126s, win the small scaled soil animal is 521s.Three kinds of stump a last emergence of the soil animal is total 30 group, among them etc. Isotomidae, etc. 13 group for 3 kinds of stump have totally. Microdrile oligochaetes, etc., 3 group for Pinus koraiensis stump and Fraxinus mandshurica stump have totally.Araneae, 1 the gruop is Pinus koraiensis stump and Betula platyphylla stump have totally. Tomoceridae, etc., 5 the gruop is Fraxinus mandshurica stump and Betula platyphylla stump have totally. Cerambycidae larvae, 1 group for Pinus koraiensis stump possess singly. Pselaphidae, etc., 7group for Fraxinus mandshurica stump possess singly. Orchesellidae, etc. 7group for Fraxinus mandshurica'stump possess singly.The large soil animal appears in the two layers, a part of stumps on the ground and underground 0-10 cm; The underground 10-20 cms and the underground 20-30 cmses are basically take up by middle- small scaled one. The reason is that going with the more it adown,the existence condition of the large soil animal is subjected to the more restrict, so large soil animal is less and less. The part of soil animals on the ground have biggest number of group and individuals, also hightest diversity. Goning with the deeper,the group and individual of soil animal are reducing ,as well as the diversity of soil fauna. At the last floor, there are the smallest number of group, individuals and the diversity. This is in accordance with the perpendicularity of the soil animal distribute in the soil completely. It's shown that the disaggrega-tire degree decrease gradually with the depth increment, in the same word an upper part one is the biggest, at the bottom layer the degree is the least, from the degree of disassembled stump. Although the process is a synthesizes one carrying on under many factors,the soil animal act as the very important function.It can be concluded that the soil animal belong to the phytophagy and the polyphagia work as the important role in the decomposition process, as during which these two kinds of soil animal accouting...