中国水土保持科学2011，Vol.9Issue(3)：52-58,7.
退化华北落叶松林枯落物对近自然经营的短期响应
Short-term response of litter of degraded Larix pricipis-rupprechtii forest to close-to natural management
摘要
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 15 m (72. 54％ ) ＞ clear cut strip 30 m (49.54％) ＞ leave strip (27.03％), for effective retention rate occurred clear cut strip 15 m ( 110. 13％ ) ＞ clear cut strip 30 m (83.27％) ＞ leave strip (40.64％), and for maximum water holding capability was leave strip( 175.96％ ) ＞ clear cut strip 15 m (70. 39％ ) ＞ clear strip 30m (47.01％), and for effective water retention was leave strip (204. 99％ ) ＞ clear cut strip 30 m ( 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.关键词
华北落叶松/近自然经营措施/枯落物/持水性能Key words
Larix pricipis-rupprechtii/ close-nature management measure/ litter/ holding water capability引用本文复制引用
董伯骞,黄选瑞,夏明瑞..退化华北落叶松林枯落物对近自然经营的短期响应[J].中国水土保持科学,2011,9(3):52-58,7.基金项目
国家公益专项"燕山山地典型森林类型健康经营技术"(20100400205),"三北地区生态林可持续经营关键技术研究与示范研究"(200804027) （20100400205）
