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呼中林业局森林采伐方式对森林景观格局的长期影响 被引量:21

Long-term effects of different forest harvesting modes on forest landscape pattern in Huzhong Forestry Bureau
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摘要 采用空间直观景观模型(LANDIS)模拟了大兴安岭地区呼中林业局在无采伐和同一采伐量下皆伐、二次渐伐和择伐共4种方案下森林景观300年的长期动态变化。结果表明,与无采伐方案相比较,采伐使落叶松和云杉的分布面积减小,樟子松、白桦的分布面积增大;择伐对本区分布面积最大的2个树种———落叶松和白桦的影响最小。采伐改变了树种年龄结构,降低了过熟林的相对面积;相对于皆伐而言,渐伐和择伐时降低的程度较大。各种采伐方式间落叶松和云杉的聚集度差异较小,白桦和樟子松的聚集度则存在显著差异。 With spatially intuitional landscape model(LANDIS),this paper simulated the long term(300 years) dynamic changes of forest landscape pattern in Huzhong Forestry Bureau in Daxing'anling Mountains under no cutting,clear cutting,gradual cutting,and selective cutting.Compared with no cutting,the other three harvesting modes decreased the distribution area of Larix gmelini and Picea koraiensis,but increased that of Pinus sylvestris var.mongolica and Betula platyphylla.Selective cutting had the smallest effect on...
出处 《生态学杂志》 CAS CSCD 北大核心 2006年第7期805-812,共8页 Chinese Journal of Ecology
基金 国家自然科学基金项目(30370266 40331008) 中国科学院知识创新工程资助项目(KSCX2-SW-133)。
关键词 LANDIS 采伐方式 皆伐 渐伐 择伐 景观格局 LANDIS harvesting mode clear cutting gradual cutting selective cutting landscape pattern.
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