Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1071/WF02021 |
Effects of fire season and intensity on Prosopis glandulosa Torr. var. glandulosa | |
Drewa, PB | |
通讯作者 | Drewa, PB |
来源期刊 | INTERNATIONAL JOURNAL OF WILDLAND FIRE
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ISSN | 1049-8001 |
出版年 | 2003 |
卷号 | 12期号:2页码:147-157 |
英文摘要 | In pyrogenic ecosystems, responses of resprouting woody vegetation may depend more on fire season than on intensity. I explored this hypothesis by examining fire season and intensity effects on response of Prosopis glandulosa, a resprouting shrub in Chihuahuan desert grasslands of the south-western United States. Clipping as well as low and high intensity fires ( natural and added fuels, respectively) were applied during the 1999 growing season and the 2000 dormant season. Both fire season and intensity affected shrub responses. Numbers of resprouts increased 16%, and heights increased 8% after dormant season versus growing season treatments of fire and clipping combined. Height and resprout number decreased with increased fire intensity. Fire season and intensity effects on canopy area and stem growth were generally not detected. My results do not support the above hypothesis. Instead, fire season and intensity influence shrub responses in different ways via different mechanisms. Prosopis glandulosa has the potential to respond more after dormant season than growing season fires, perhaps as determined by carbohydrate availability in underground organs at the time of fire. However, realization of this potential is contingent on fire intensity as influenced primarily by fuel amount. In turn, fire intensity will determine the amount and duration of heat penetration into soils and thus the amount of damage to growing points of underground organs. |
英文关键词 | Chihuahuan desert grasslands fire severity fire temperature honey mesquite New Mexico shrubs south-western United States |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000183755500003 |
WOS关键词 | LONGLEAF PINE SAVANNAS ; CHIHUAHUAN DESERT ; SONORAN DESERT ; NEW-MEXICO ; SHRUBS ; FOREST ; ECOSYSTEMS ; GRASSLAND ; PRECIPITATION ; REGENERATION |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
来源机构 | New Mexico State University |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/144881 |
作者单位 | (1)New Mexico State Univ, USDA ARS, Jornada Expt Range, Las Cruces, NM 88003 USA |
推荐引用方式 GB/T 7714 | Drewa, PB. Effects of fire season and intensity on Prosopis glandulosa Torr. var. glandulosa[J]. New Mexico State University,2003,12(2):147-157. |
APA | Drewa, PB.(2003).Effects of fire season and intensity on Prosopis glandulosa Torr. var. glandulosa.INTERNATIONAL JOURNAL OF WILDLAND FIRE,12(2),147-157. |
MLA | Drewa, PB."Effects of fire season and intensity on Prosopis glandulosa Torr. var. glandulosa".INTERNATIONAL JOURNAL OF WILDLAND FIRE 12.2(2003):147-157. |
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