Using multi-platform LiDAR to guide the conservation of the world's largest temperate woodland

被引:12
|
作者
Jucker, Tommaso [1 ]
Gosper, Carl R. [2 ,3 ]
Wiehl, Georg [3 ]
Yeoh, Paul B. [4 ]
Raisbeck-Brown, Nat [3 ]
Fischer, Fabian Jorg [1 ]
Graham, Jason [5 ]
Langley, Helen [5 ]
Newchurch, William [5 ]
O'Donnell, Alison J. [3 ]
Page, Gerald F. M. [2 ,3 ,6 ]
Zdunic, Katherine [2 ]
Prober, Suzanne M. [7 ]
机构
[1] Univ Bristol, Sch Biol Sci, 24 Tyndall Ave, Bristol BS8 1TQ, England
[2] Dept Biodivers Conservat & Attract, Biodivers & Conservat Sci, Kensington, WA 6151, Australia
[3] CSIRO Environm, Floreat, WA 6014, Australia
[4] CSIRO Hlth & Biosecur, Floreat, WA 6014, Australia
[5] Ngadju Conservat Aboriginal Corp, Norseman, WA 6443, Australia
[6] Murdoch Univ, Sch Environm & Conservat Sci, Perth, WA 6150, Australia
[7] CSIRO Environm, Canberra, ACT 2601, Australia
关键词
Canopy structure; Conservation prioritization; Ecosystem restoration; GEDI; Great Western Woodlands; LiDAR; Old -growth woodlands; Remote sensing; Wildfires; TROPICAL FORESTS; VEGETATION; FIRE; COVER; REGION;
D O I
10.1016/j.rse.2023.113745
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Australia's Great Western Woodlands are the largest intact temperate woodland ecosystem on Earth, spanning an area the size of the average European country. These woodlands are part of one of the world's biodiversity hotspots and, despite subsisting on just 200-400 mm of rainfall a year, can store considerable amounts of carbon. However, they face growing pressure from a combination of climate change and increasingly frequent and large wildfires, which have burned over a third of these slow-growing, fire-sensitive woodlands in last 50 years alone. To develop conservation strategies that bolster the long-term resilience of this unique ecosystem, we urgently need to understand how much old-growth woodland habitat remains intact and where it is distributed across this vast region. To tackle this challenge, we brought together data from an extensive network of field plots distributed across the region and combined this with information on vegetation 3D structure derived from drone, airborne and spaceborne LiDAR. Using this unique dataset, we developed a novel modelling framework to generate the first high-resolution maps of woodland tree size and age structure across the entire region. We found that 41.2% of the woodland habitat is covered by old-growth stands, equivalent to an area of approximately 39,187 km2. Only 10% of these old-growth woodlands fall within current protected areas managed by the state government. Instead, most remaining old-growth woodlands are found either within the Ngadju Indigenous Protected Area (26.9%) or outside of formal protected areas on leaseholds and privately owned lands (57.2%). Our maps of woodland size and age structure will help guide the targeted management and conservation of the Great Western Woodlands. Moreover, by developing a robust pipeline for integrating LiDAR data from multiple platforms, our study paves the way for mapping the 3D structure and carbon storage of open and heterogeneous woodland ecosystems from space.
引用
收藏
页数:15
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