Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2018.01.019 |
Not just about the trees: Key role of mosaic-meadows in restoration of ponderosa pine ecosystems | |
Matonis, Megan Shanahan1; Binkley, Dan2 | |
2018-03-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT
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ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 411页码:120-131 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Historical pre-settlement conditions in ponderosa pine ecosystems ranged from savannas (<30% canopy cover) with contiguous grasslands and scattered tree groups, to forests with isolated mosaic-meadows surrounded by trees. We use the term mosaic-meadows for non-treed areas that weave around individual trees and tree groups, supporting diverse understory plant communities in ponderosa pine ecosystems. The long-term sustainability of ponderosa pine ecosystems may depend on mosaic-meadows that provide fine fuels and support frequent, low severity fires. Increasing tree densities over the past century have eliminated mosaic-meadows and contiguous grasslands from many ponderosa pine landscapes. The link between restored ecosystem structure and function is often assumed but not empirically demonstrated, so we assessed the impact of mosaic-meadows (areas > 6 m from overstory trees) on understory vegetation in five recently thinned ponderosa pine stands and one long undisturbed stand in Colorado. We also compared historical spatial patterns in mosaic-meadows to current conditions in ponderosa pine stands and determined whether thinning treatments are recreating historical conditions. Mosaic-meadows in ponderosa pine ecosystems declined substantially from a mean of 55% of stand area in 1860-1875 to 7% in 2010-2013 prior to tree thinning. The loss of mosaic-meadows has ecological consequences for the function of ponderosa pine ecosystems because spatial patterns of mosaic-meadows strongly influenced understory vegetation. At our sites, understory cover increased by 3%/m with distance from overstory trees, and understory richness increased from 6 species/m(2) within 1 m of overstory trees to 9 species/m2 at 10 m away from overstory trees. Cover and richness of understory vegetation (especially native forbs) responded rapidly to creation of mosaic-meadows within 1 to 4 years after treatment. Thinning treatments at two stands brought the coverage of mosaic-meadows within the historical range of variation, but there was a noticeable lack of mosaic-meadows > 12 m from overstory trees at all treated stands. Restoration of the fundamental ecological characteristics of ponderosa pine ecosystems should intentionally include variably sized mosaic-meadows. |
英文关键词 | Ponderosa pine Ecological restoration Understory plants Spatial patterns Meadows |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426409100013 |
WOS关键词 | COLORADO FRONT RANGE ; MIXED-CONIFER FORESTS ; NORTHERN ARIZONA ; SPATIAL-PATTERNS ; HERBACEOUS VEGETATION ; FIRE REGIMES ; LONG-TERM ; UNDERSTORY ; USA ; SEVERITY |
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/23603 |
专题 | 气候变化 |
作者单位 | 1.Colorado State Univ, Colorado State Forest Serv, 5060 Campus Delivery, Ft Collins, CO 80523 USA; 2.No Arizona Univ, Sch Forestry, 200 East Pine Knoll Dr, Flagstaff, AZ 86011 USA |
推荐引用方式 GB/T 7714 | Matonis, Megan Shanahan,Binkley, Dan. Not just about the trees: Key role of mosaic-meadows in restoration of ponderosa pine ecosystems[J]. FOREST ECOLOGY AND MANAGEMENT,2018,411:120-131. |
APA | Matonis, Megan Shanahan,&Binkley, Dan.(2018).Not just about the trees: Key role of mosaic-meadows in restoration of ponderosa pine ecosystems.FOREST ECOLOGY AND MANAGEMENT,411,120-131. |
MLA | Matonis, Megan Shanahan,et al."Not just about the trees: Key role of mosaic-meadows in restoration of ponderosa pine ecosystems".FOREST ECOLOGY AND MANAGEMENT 411(2018):120-131. |
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