Amazonian secondary forests are greatly reducing fragmentation and edge exposure in old-growth forests

被引:5
|
作者
Smith, Charlotte C. [1 ]
Barlow, Jos [1 ]
Healey, John R. [2 ]
Miranda, Leonardo de Sousa [1 ]
Young, Paul J. [1 ,3 ]
Schwartz, Naomi B. [4 ]
机构
[1] Univ Lancaster, Lancaster Environm Ctr, Lancaster, England
[2] Bangor Univ, Sch Nat Sci, Bangor, Wales
[3] JBA Risk Management, Broughton, Skipton, England
[4] Univ British Columbia, Dept Geog, Vancouver, BC, Canada
基金
英国自然环境研究理事会;
关键词
secondary forest; amazon; edge effects; restoration; TROPICAL FORESTS; SEED DISPERSERS; RESTORATION; CONNECTIVITY; REGENERATION; DISTURBANCE; RECOVERY; DEFORESTATION; DETERMINES; RESILIENCE;
D O I
10.1088/1748-9326/ad039e
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Restoration of tropical landscapes through the expansion of secondary forests is crucial for climate change mitigation and offers co-benefits for biodiversity. However, the strength of these benefits is influenced by the position of these secondary forests within the landscape. Recovery of both carbon stocks and biodiversity in secondary forests are enhanced by proximity to old-growth forests, and old-growth forests may benefit from secondary forests in return through buffering of edge effects and reduced fragmentation. However, to date there has been no biome-wide assessment of secondary forest location relative to old-growth forests. We mapped Amazonian secondary forests and explored their proximity to old-growth forests of different conditions. We then calculated the extent to which secondary forests buffer old-growth edge forest (<120 m from an edge) and the influence of secondary forests on fragmentation. In 2020, 41.2% of Amazonian secondary forest was directly adjacent to old-growth forest and 94.1% was within a fragment connected to old growth. However, adjacency and connectedness fell to 20.1% and 57.4% respectively when only considering extensive structurally intact old-growth forest. Secondary forests buffered 41.1% of old-growth edge forest and, when acting as corridors, reduced the total number of old-growth fragments by 2 million. Our results reveal the importance of understanding spatial context when examining the potential benefits of increasing secondary forest cover. Improved understanding of the benefits of locating secondary forests next to old-growth forests could support the development of more effective climate change mitigation and restoration strategies.
引用
收藏
页数:14
相关论文
共 50 条
  • [41] Physical structure and biological composition of canopies in tropical secondary and old-growth forests
    Clark, David B.
    Oberbauer, Steven F.
    Clark, Deborah A.
    Ryan, Michael G.
    Dubayah, Ralph O.
    PLOS ONE, 2021, 16 (08):
  • [42] Gender-related distributions of Fraxinus mandshurica in secondary and old-growth forests
    Zhang, Chunyu
    Zhao, Xiuhai
    Gao, Lushuang
    von Gadow, Klaus
    ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY, 2010, 36 (01): : 55 - 62
  • [43] Present and prospects for multi-aged silviculture in Chilean temperate forests: Targeting secondary forests in transition and partially harvested old-growth forests
    Donoso, Pablo J.
    Soto, Daniel P.
    Salas-Eljatib, Christian
    Riquelme-Buitano, Tomas R.
    FRONTIERS IN FORESTS AND GLOBAL CHANGE, 2022, 5
  • [44] Dynamic anthropogenic edge effects on the distribution and diversity of fungi in fragmented old-growth forests
    Ruete, Alejandro
    Snall, Tord
    Jonsson, Mari
    ECOLOGICAL APPLICATIONS, 2016, 26 (05) : 1475 - 1485
  • [45] Old-growth forests show low canopy resilience to droughts at the southern edge of the taiga
    Liu, Feng
    Liu, Hongyan
    Xu, Chongyang
    Shi, Liang
    Zhu, Xinrong
    Qi, Yang
    He, Wenqi
    GLOBAL CHANGE BIOLOGY, 2021, 27 (11) : 2392 - 2402
  • [46] Managing for old-growth structure in northern hardwood forests
    Keeton, WS
    Balancing Ecosystem Values: Innovative Experiments for Sustainable Forestry, 2004, 635 : 107 - 117
  • [47] Old-growth Forests as Buffer against Rising Temperatures
    Frey, Sarah
    FORESTRY CHRONICLE, 2016, 92 (02): : 162 - 162
  • [48] Old-growth definitions for the forests of British Columbia, Canada
    Wells, RW
    Lertzman, KP
    Saunders, SC
    NATURAL AREAS JOURNAL, 1998, 18 (04) : 279 - 292
  • [49] OLD-GROWTH NORTHERN HARDWOOD FORESTS IN NORTHEASTERN MINNESOTA
    FLACCUS, E
    OHMANN, LF
    ECOLOGY, 1964, 45 (03) : 448 - +
  • [50] Old-growth forests store a treasure trove of carbon
    Pelley, Janet
    ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2009, 43 (20) : 7602 - 7603