• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Land Degradation and Development >Estimating sustainable biomass harvesting level for charcoal production to promote degraded woodlands recovery: A case study from Mutomo District, Kenya
【24h】

Estimating sustainable biomass harvesting level for charcoal production to promote degraded woodlands recovery: A case study from Mutomo District, Kenya

机译：估算木炭产量的可持续生物量收获水平，以促进退化的林地恢复：肯尼亚多莫莫区的案例研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Charcoal is an important urban fuel; however, when production is unregulated, it is a major cause of land and forest degradation. Production through selective harvesting of the preferred large, hardwood tree species leads to a degraded residual forest or woodland composed of juvenile hardwood trees and unused softwood tree species. This situation can be addressed by ensuring that the rate of preferred tree species extraction does not exceed the mean annual increment. This study estimated the sustainable rate of tree harvesting for charcoal in Mutomo District, based on field data collected between December 2012 and January 2013, through a forest inventory. The woodlands are subjected to selective logging for charcoal production, an activity undertaken by about half of the residents for their livelihood. The study findings show that charcoal production through selective logging has led to a reduction of the hardwood trees biomass density to 3.8tha(-1) compared with an estimated desirable level of 12.5tha(-1). The results also show that it would take between 25 and 31years for the woodlands to recover to the desirable stocking level if harvesting was completely stopped. This duration would increase to between 54 and 64years if 80% of the mean annual increment was harvested for charcoal production and 20% was retained for woodlands recovery. As the residents of Mutomo District are poor and highly dependent on charcoal production for their livelihood, a harvesting plan based on the latter option would set the woodlands on the path to recovery and ensuring a sustainable livelihood source.
机译：木炭是一个重要的城市燃料;然而，当生产不受管制时，它是土地和森林退化的主要原因。通过选择性收获优选的大型硬木树种，导致由少年硬木树和未使用的软木树种组成的降级的残余森林或林地。通过确保优选的树种提取率不超过平均年增长的情况，可以解决这种情况。本研究估计，根据2012年12月至2013年1月至2013年1月间的现场数据，通过森林库存收集的现场数据，估计穆斯莫多地区的树木收割率。林地对木炭生产进行选择性测井，这项活动大约一半的活动为其生计而进行。研究结果表明，通过选择性测井的木炭产生导致硬木树木生物量密度降低至3.84（-1），而估计期望的12.5℃（-1）。结果还表明，如果完全停止收获，林地将需要25到31岁的林地将恢复到所需的库存水平。如果为木炭生产收获的80％的平均年度增量的80％，则该持续时间将增加到54至64年之间，而林地恢复为20％。随着穆马文区居民的贫困且高度依赖于其生计的木炭产量，基于后一期权的收获计划将在恢复和确保可持续生计源的途径上设立林地。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号