防护林科技
防護林科技
방호림과기
PROTECTION FOREST SCIENCE AND TECHNOLOGY
2015年
6期
12-13,23
,共3页
日本落叶松%色赤杨%混交林%生态作用
日本落葉鬆%色赤楊%混交林%生態作用
일본락협송%색적양%혼교림%생태작용
Larix kaempferi%Alnus sibirica%mixed forest%ecological function
通过对人工针阔混交林生态作用的调查与分析,结果表明:日本落叶松+色赤杨混交林比日本落叶松纯林植物种类多,乔木层、灌木层、草本层中的多样性能指标占优势,针阔混交林的分解速度明显高于纯林,其营养元素(N、P、K )的释放率均在50%左右,而日本落叶松纯林营养元素(N、P、K )的释放率低于31%。培育人工针阔混交林,能提高物种的多样性,加速枯落物的分解,增强营养元素释放效率,提高土壤肥力。
通過對人工針闊混交林生態作用的調查與分析,結果錶明:日本落葉鬆+色赤楊混交林比日本落葉鬆純林植物種類多,喬木層、灌木層、草本層中的多樣性能指標佔優勢,針闊混交林的分解速度明顯高于純林,其營養元素(N、P、K )的釋放率均在50%左右,而日本落葉鬆純林營養元素(N、P、K )的釋放率低于31%。培育人工針闊混交林,能提高物種的多樣性,加速枯落物的分解,增彊營養元素釋放效率,提高土壤肥力。
통과대인공침활혼교림생태작용적조사여분석,결과표명:일본락협송+색적양혼교림비일본락협송순림식물충류다,교목층、관목층、초본층중적다양성능지표점우세,침활혼교림적분해속도명현고우순림,기영양원소(N、P、K )적석방솔균재50%좌우,이일본락협송순림영양원소(N、P、K )적석방솔저우31%。배육인공침활혼교림,능제고물충적다양성,가속고락물적분해,증강영양원소석방효솔,제고토양비력。
Ecological function of mixed conifer‐broadleaved forest was analyzed .Plant species of Larix kaempferi+ mixed forest of Alnussibirica are more than that of pure forest of Larix kaempferi ;diversity indices in tree layer , shrub layer ,herb layer are in a dominant position;the decomposition rate of mixed conifer‐broadleaved forest is sig‐nificantly higher than that of pure forest ,the release rate of its nutrients (N ,P ,K ) being 50% ;the release rate of pure forest of nutrients (N ,P ,K) for Larix kaempferi is less than 31% .Cultivating mixed conifer‐broadleaved for‐est ,can increase the diversity of species ,accelerate the decomposition of litter and release nutrients to enhance effi‐ciency ,and improve soil fertility .