• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Forest and Society >The role of tropical abandoned land relative to ecological and economic aspects
【24h】

The role of tropical abandoned land relative to ecological and economic aspects

机译：热带废弃土地相对于生态和经济方面的作用

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The floristic structure and composition of abandoned lands in the tropic have been observed to be changing dynamically during the succession process. This is mostly because they are not utilized maximally, therefore, there is a need to assess the economic and ecological impacts of this land abandonment in tropical areas. This study was conducted to determine the ecological aspect s of stand structure, floristic composition, and species diversity and analyze the economic aspect s of standing trees in tropical abandoned land . The vegetation containing woody trees with a diameter at breast height (DBH) of 5 cm were surveyed at six subplots sized 20 m × 20 m. The economic parameters were evaluated using data of log price, logging cost, profit margin, and stumpage value of standing trees in the study plot and a total of 126 trees including 26 species of 25 genera of 18 families were recorded. The most common species found were Macaranga tanarius with 50.60% , Bridelia glauca with 49.13%, and Pterospermum javanicum with 29.05% based on Importance Value Index (IVi). Moreover, the diversity, dominance, evenness, and richness indices were 1.23, 0.09, 0.87, and 5.17 respectively while the t otal log price at the abandoned land was 1,462.02 USD m -3 with an average value of 56.23 USD m -3 . The total and mean values of logging costs were 1,212.24 USD ha -1 and 46.62 USD ha -1 , respectively while the total profit margin of log selling was USD337.39 m -3 at maximum with an average of 12.98 USD m -3 . Furthermore, the average stumpage value was 83.05 USD ha -1 while the total was calculated to be 2,159.36 USD ha -1 . These findings showed the utilization of abandoned lands with respect to ecology and economic aspects has the ability to increase community welfare and support the implementation of developmental programs in the country.
机译：已经观察到在继承过程中，观察到热带地区的废弃土地的植物结构和组成变化。这主要是因为它们没有最大限度地利用，因此，需要评估这种土地遗弃在热带地区的经济和生态影响。进行了该研究以确定实体结构，植物组成和物种多样性的生态方面，分析热带废弃土地的常设树木的经济方面。在六个小板大小的尺寸为20米×20米，调查含有直径的木质树木的木质树木（DBH）。使用日志价格的数据，测井成本，利润率和常设树木的稳定价值进行评估经济参数，并记录了总共126棵树，其中包括26种18个家庭的26种。发现最常见的物种是Macaranga Tanarius，50.60％，Bridelia glauca，49.13％，并基于重要价值指数（IVI），佩斯孢菌瘤爪哇省爪哇省javanicum 29.05％。此外，多样性，优势，均匀度和富裕指数分别为1.23,0.09,0.87和5.17，而废弃土地的T OTAL日志价格为1,462.02美元M-3，平均值为56.23美元。伐木成本的总值和平均值分别为1,212.24美元-1和46.62美元HA -1，而日志销售的总利润率最高为337.39 m -3，平均为12.98美元US3。此外，平均抑郁值为83.05 USD HA -1，而总数计算为2,159.36 USD HA -1。这些调查结果表明，由于生态学和经济方面，利用被遗弃的土地有能力增加社区福利并支持在该国的发展方案实施。

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