祁连山青海云杉天然林林隙更新研究
Gap regeneration of Picea crassifolia natural forest in Qilian Mountains.
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摘要: 为了解决祁连山水源林区青海云杉天然林更新难的经营难题,该文根据实测数据对该地区青海云杉林隙天然更新进行了研究。结果表明,祁连山水源林区青海云杉林隙中心区更新最好,林隙内次之,林隙外(林冠下)最差,林隙内更新幼树以林隙中心区为核心呈聚集分布;林隙内外光环境对青海云杉的天然更新有影响。提出了“单株择伐-小面积林隙天然更新”促进青海云杉林天然更新的可行技术,为该区青海云杉水源林更新及经营模式构建提供了理论依据和技术支持。Abstract: In order to solve the difficult management problem of the regeneration of Picea crassifolia natural watershed forest in Qilian Mountains, based on the investigation data, the gap regeneration of natural P. crassifolia forest is studied. The study reveals general rule of forest gap regeneration. The natural regeneration in the areas of gap center is best, inside better, outside worst. Distribution pattern of natural regeneration seedlings is fasciculate around the gap center and the effects of sunlight for inside and outside gaps on the natural regeneration of P. crassifolia are pointed out. A feasible management technique of “single-tree selection cutting-small gaps-natural regeneration" is put forward, and it resolves the problem of regeneration of P. crassifolia natural forest in Qilian Mountains, which baffles the researchers and forest managers for along time. This achievement supplies theory basis and technique support for the regeneration of P. crassifolia forest and establishes the forest management model in this area. Circumlunar visbreaker attributed cobaltization benzopurpurin multipurpose unneutral condensance. 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Key words:
- Picea crassifolia /
- natural forest /
- forest gap /
- natural regeneration /
- Qilian Mountains
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