SGER:Forest Damage and Recovery from Hurricane Iniki, Kauai, Hawaii

SGER：夏威夷考艾岛伊尼基飓风造成的森林破坏和恢复

• 批准号: 9304701
• 负责人: James Fownes
• 金额: $ 4.98万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-03-01 至 1994-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9304701&HistoricalAwards=false
• 关键词: SGER; Forest; Damage; Recovery; Hurricane

The impact of Hurricane Iniki on native Hawaiian forest was highly variable. Preliminary observations suggested that native trees were less damaged than introduced species. The spatial pattern of damage seemed to be related to soil wetness, a prime factor limiting tree root depth. The productivity of forests should be affected by removal of leaves, death of fine roots, and nutrient accumulation by fallen leaves and twings. In areas which were not severely damaged by the hurricane, a new mechanism may be identified whereby sub-catastrophic storms help maintain the unique even-aged population structure of native Metrosideros forests. This research will test hypotheses on mechanisms controlling these apparent patterns, and will measure (1) the spatial pattern of damage, (2) damage by size class and species, (3) changes in leaf area and growth rate, (4) changes in fine root biomass, (5) decomposition of leaves and twigs, and (6) changes in soil nutrient availability.

伊尼基飓风对夏威夷本土森林的影响变化很大。 初步观察表明，本土树木比引进树种受到的破坏要小。 损害的空间模式似乎与土壤湿度有关，土壤湿度是限制树根深度的主要因素。 森林的生产力应该受到树叶的去除、细根的死亡以及落叶和枝条所积累的养分的影响。 在没有受到飓风严重破坏的地区，可能会发现一种新的机制，亚灾难性风暴有助于维持原生Metrosideros森林独特的同龄人口结构。 这项研究将测试控制这些明显模式的机制的假设，并测量（1）损害的空间模式，（2）尺寸类别和物种的损害，（3）叶面积和生长速度的变化，（4）细根生物量的变化，（5）叶子和树枝的分解，以及（6）土壤养分有效性的变化。