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| Short-term response of litter of degraded Larix pricipis-rupprechtii forest to close-to natural management |
| Dong Boqian,Huang Xuanrui,Xia Mingrui |
| Agriculture University of Hebei, 071000, Baoding, Hebei, China |
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Abstract Taken the degraded Larix pricipis-rupprechtii man-made forest in the mountain area of north Hebei Province as objects, the short-term response of water-holding characteristics to different management measures in three years were studied, which could provide theoretical base for the research of the impact of close-to nature management measure on soil and water conservation function of forest. Results showed that: 1) In clear-cut strips (blockading + clear cut in strips + manual promote renew), litter storage increased firstly and then decreased, but in leave strip (blockading only), it increased continuously. 2) The increasing range for maximum water holding rate was clear cut strip 15m (72.54%)> clear cut strip 30m (49.54%)> leave strip (27.03%), for effective retention rate occurred clear cut strip 15m (110.13%)> clear cut strip 30m (83.27%)> leave strip (40.64%), and for maximum water holding capability was leave strip(175.96%)> clear cut strip 15m (70.39%)> clear strip 30m (47.01%), and for effective water retention was leave strip (204.99%)> clear cut strip 30m (141.96%)> clear strip 15m (50.37%). 3) The litter mass, maximum water holding capability and effective water retention of afforestation land of Betula platyphylla Suk were larger than those of afforestation land of Larix principis-rupprechtii and Quercus mongolica Fischer ex Ledebour. It can be concluded that close-to nature management measure would significantly enhance the water conservation function of forest land in the short-term and it was effective measures for the restoration of ecological function of degraded Larix principis-rupprechtii forest.
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Received: 17 December 2010
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