Research On Soil Moisture Influence Area Of Water Conservation Forest Landscape Boundary At Eastern Of Liaoning Mountain Region

In this paper, taken Juglans mandshurica Maxim natural secondary forest and larch gmelinii artificial forests as an example, researched the landscape boundary influence region of soil moisture and soil moisture variability characteristics of water conservation forest at the east of Liaoning mountainous region. The main survey analysis are litter layer water storage capacity and use degree of two kinds of forests and landscape boundary, soil moisture influence region of landscape boundary, variability characteristics of soil moisture.Through the analysis of litter layer water storage capacity of two kinds of forests and landscape boundary, in larch gmelinii forest, layer water storage capacity is higher than landscape boundary region and Juglans mandshurica Maxim forest, water use efficiency is lower; in Juglan smandshurica Maxim forest, layer water storage capacity is lower, water use efficiency is higher; in landscape boundary region, layer water storage capacity is between both sides of forest, also has the advantages of both forests, efficient participation of water circulation.Through the analysis of soil moisture influence region of landscape boundary, the landscape boundary soil moisture influence region formed by Juglans mandshurica Maxim natural secondary forest and larch gmelinii artificial forests interactived is a width ranging in different soil layers, alternating dynamic regional location during the rainy season.Through the analysis of soil moisture variability characteristics, in horizontal direction, landscape boundary region average soil moisture is highest, with the gradual deepening of both sides of forests, soil moisture decreased and stabilized; in vertical direction, the various functional areas soil moisture with increasing soil depth gradient showed a downward trend, followed by the performance of rapid change layer, gradient layer and the stable layer 3 levels; over time, all three functional areas of soil depth average soil moisture exhibited "decrease-increase-decrease" changing trends.