Effects of Thinning on Water Conservation of Larix principis-rupprechtii Plantation in Mountainous Area of North Hebei
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Abstract:
Forest thinning imposed the large effects on forest water conservation. Based on vegetation layer, litter layer and soil layer of Larix principis-rupprechtii plantation after thinning in different intensities in mountainous area of north Hebei province, forest water conservation was studied. Results showed that 1) vegetation interception and litter water retention decreased with the decrease in thinning intensity; 2) soil water-holding ability was raised by increased thinning intensity. Collecting litter after thinning could increase vegetation interception and litter water retention ability. Soil water-holding ability played the most important part in vegetation water conservation ability, next was litter water retention ability and least was vegetation interception ability. Larix principis-rupprechtii platation thinning reasonably could improve forest water conservation.
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