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Designing and Evaluating Bamboo Harvesting Methods for Local Needs: Integrating Local Ecological Knowledge and Science

机译:设计和评估满足当地需求的竹子采伐方法:融合当地的生态知识和科学知识

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Dendrocalamus hamiltonii, a large, clump-forming bamboo, has great potential to contribute towards poverty alleviation efforts across its distributional range. Harvesting methods that maximize yield while they fulfill local objectives and ensure sustainability are a research priority. Documenting local ecological knowledge on the species and identifying local users' goals for its production, we defined three harvesting treatments (selective cut, horseshoe cut, clear cut) and experimentally compared them with a no-intervention control treatment in an action research framework. We implemented harvesting over three seasons and monitored annually and two years post-treatment. Even though the total number of culms positively influenced the number of shoots regenerated, a much stronger relationship was detected between the number of culms harvested and the number of shoots regenerated, indicating compensatory growth mechanisms to guide shoot regeneration. Shoot recruitment declined over time in all treatments as well as the control; however, there was no difference among harvest treatments. Culm recruitment declined with an increase in harvesting intensity. When univariately assessing the number of harvested culms and shoots, there were no differences among treatments. However, multivariate analyses simultaneously considering both variables showed that harvested output of shoots and culms was higher with clear cut and horseshoe cut as compared to selective cut. Given the ease of implementation and issues of work safety, users preferred the horseshoe cut, but the lack of sustainability of shoot production calls for investigating longer cutting cycles.
机译:Dendrocalamus hamiltonii,一种大的成团的竹子,在其分布范围内为减轻贫困做出了巨大的贡献。在满足当地目标并确保可持续性的同时最大化产量的收获方法是研究的重点。我们记录了有关该物种的当地生态知识并确定了当地使用者的生产目标,我们定义了三种采伐方法(选择性采伐,马蹄形采伐,纯伐木采伐),并在行动研究框架中通过实验将它们与无干预措施进行了比较。我们实施了三个季节的采伐,并在处理后每年和两年进行监测。尽管茎的总数对再生的芽数有正面影响,但在收获的茎数与再生的芽数之间发现了更强的关系,这表明了指导芽再生的补偿性生长机制。在所有处理以及对照中,新芽的采摘量均随时间下降。但是,收获处理之间没有差异。随着收获强度的增加,库尔姆人的招聘数量下降。单因素评估收获的茎和茎的数量时,处理之间没有差异。但是,同时考虑这两个变量的多变量分析表明,与选择性切割相比,采用纯切割和马蹄形切割时,茎和茎的收获产量更高。考虑到实施的简便性和工作安全性问题,用户更喜欢使用马蹄形切割,但是由于芽生产缺乏可持续性,因此需要研究更长的切割周期。

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