Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.10.046 |
Quantifying shortwave and longwave radiation inputs to headwater streams under differing canopy structures | |
Klos, P. Zion1; Link, Timothy E.2 | |
2018 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 407页码:116-124 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The extent to which riparian understory vegetation in harvested areas can partially or fully negate changes in incoming shortwave and longwave radiation was investigated along 1st-order headwater streams. Despite similarities in shade provisioning, others have noted increased stream temperatures in post-harvest understoryonly-canopies, relative to mature forest canopies. To advance the process understanding of how management of riparian vegetation affects stream energetics, incoming shortwave and longwave radiation was measured directly at the stream surface for 6 stream reaches in a mid-latitude, temperate, montane, forested watershed with strongly contrasting riparian canopies. Radiometer arrays were installed during mid-summer, clear-sky conditions underneath combined tree and understory vegetation canopies within non-impacted forested reaches (references), a partial-cut reach (similar to 50% overstory canopy removal), and two recently (similar to 5 year.) clear-cut reaches with contrasting densities of understory vegetation. Results indicate that incoming all-wave radiation was 37-39% less in the three undisturbed reference reaches, compared to an open area reference. The radiative regimes in the partial-cut and dense-understory clear-cut reaches were similar to the intact forested reaches, with 37% and 39% less all-wave radiation, respectively, in comparison to the open reference location. The sparse-understory clear-cut exhibited a 16% reduction in all-wave radiation. Findings from this study indicate that some recently clear-cut and partial-cut headwater riparian ecosystems can rapidly recover (< 5 years) to pre-harvest radiation levels if adequate regrowth of understory occurs. Findings clarify previous process understanding by demonstrating that a low-lying understory-only canopy does not enhance longwave radiation, relative to an intact full-canopy forest. Instead, enhanced stream heating post-harvest within an understory-only canopy is hypothesized to occur through potential increases in sensible heat input at the stream surface controlled by the lowering of the height,of maximum radiative emittance after removal of the overstory canopy, possibly allowing for increased advective energy transfer from the above canopy and surrounding harvested area. |
英文关键词 | Riparian Canopy Thinning Logging Headwater Aquatic |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418214300014 |
WOS关键词 | TEMPERATURE RESPONSE ; WATER TEMPERATURE ; RIPARIAN BUFFERS ; OREGON ; MICROCLIMATE ; VARIABILITY ; WASHINGTON ; PATTERNS ; REACHES ; SNOW |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/23421 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Santa Barbara, Bren Sch Environm Sci & Management, 1005 Bren Hall, Santa Barbara, CA 93106 USA; 2.Univ Idaho, Coll Nat Resources, Moscow, ID 83843 USA |
推荐引用方式 GB/T 7714 | Klos, P. Zion,Link, Timothy E.. Quantifying shortwave and longwave radiation inputs to headwater streams under differing canopy structures[J]. FOREST ECOLOGY AND MANAGEMENT,2018,407:116-124. |
APA | Klos, P. Zion,&Link, Timothy E..(2018).Quantifying shortwave and longwave radiation inputs to headwater streams under differing canopy structures.FOREST ECOLOGY AND MANAGEMENT,407,116-124. |
MLA | Klos, P. Zion,et al."Quantifying shortwave and longwave radiation inputs to headwater streams under differing canopy structures".FOREST ECOLOGY AND MANAGEMENT 407(2018):116-124. |
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