Wildfire management decisions outweigh mechanical treatment as the keystone to forest landscape adaptation DOI Creative Commons
Tucker J. Furniss, Nicholas A. Povak, Paul F. Hessburg

и другие.

Fire Ecology, Год журнала: 2024, Номер 20(1)

Опубликована: Дек. 18, 2024

Abstract Background Modern land management faces unprecedented uncertainty regarding future climates, novel disturbance regimes, and unanticipated ecological feedbacks. Mitigating this requires a cohesive landscape strategy that utilizes multiple methods to optimize benefits while hedging risks amidst uncertain futures. We used process-based simulation model (LANDIS-II) forecast forest management, growth, climate effects, wildfire dynamics, we distilled results using decision support tool allowing us examine tradeoffs between alternative strategies. developed plausible scenarios based on factorial combinations of restoration-oriented thinning prescriptions, prescribed fire, wildland fire use. Results were assessed continuously for 100-year period, which provided unique assessment among seven primary topics representing social , economic aspects resilience. Projected climatic changes had substantial impact modeled activity. In the Wildfire Only scenario (no treatments, but including active change), observed an upwards inflection point in area burned around mid-century (2060) detrimental impacts total carbon storage. While simulated mechanical treatments (~ 3% per year) reduced incidence high-severity it did not eliminate completely. Scenarios involving use resulted greater reductions more linear trend cumulative burned. Mechanical beneficial subtopics under topic given their positive financial return investment, better subtopics, primarily due reduction fire. Benefits mixed, reflecting inevitability landscapes rely diverse countervailing ecosystem services. Conclusions This study provides evidence optimal will involve mix passive strategies, different tactics coexist within ownerships classes. Our also emphasize importance decisions as central building robust resilient landscapes.

Язык: Английский

Restoring Historic Forest Disturbance Frequency Would Partially Mitigate Droughts in the Central Sierra Nevada Mountains DOI Creative Commons
Elijah N. Boardman, Zhuoran Duan, Mark S. Wigmosta

и другие.

Water Resources Research, Год журнала: 2025, Номер 61(4)

Опубликована: Апрель 1, 2025

Abstract Forest thinning and prescribed fire are expected to improve the climate resilience water security of forests in western U.S., but few studies have directly modeled hydrological effects multi‐decadal landscape‐scale forest disturbance. By updating a distributed process‐based model (DHSVM) with vegetation maps from ecosystem (LANDIS‐II), we simulate resource impacts management scenarios targeting partial or full restoration pre‐colonial disturbance return interval central Sierra Nevada mountains. In fully restored regime that includes fire, thinning, insect mortality, reservoir inflow increases by 4%–9% total 8%–14% dry years. At sub‐watershed scales (10–100 km 2 ), dense can increase streamflow >20% thinner forest, increased understory transpiration compensates for decreased overstory transpiration. Consequentially, 73% gains attributable rain snow interception loss. Thinner headwater peak flows, reservoir‐scale flows almost exclusively influenced climate. Uncertainty future precipitation causes high uncertainty yield, additional yield is about five times less sensitive annual uncertainty. This decoupling response makes especially valuable supply during Our study confidence benefits restoring historic frequencies mountains, our modeling framework widely applicable other forested mountain landscapes.

Язык: Английский

Процитировано

1
Going slow to go fast: landscape designs to achieve multiple benefits DOI Creative Commons
Patricia N. Manley,

Liraz Bistritz,

Nicholas A. Povak

и другие.

Frontiers in Environmental Science, Год журнала: 2025, Номер 13

Опубликована: Апрель 28, 2025

Introduction Growing concerns about fire across the western United States, and commensurate emphasis on treating expansive areas over next 2 decades, have created a need to develop tools for managers assess management benefits impacts spatial scales. We modeled outcomes associated with two common forest objectives: risk reduction (fire), enhancing multiple resource (ecosystem resilience). Method evaluated compatibility of these objectives ca. 1-million ha in central Sierra Nevada, California. The strategy focused short-term reduction, while ecosystem longer-term resilience. Treatment locations were selected using optimization model, ForSys, each scenario was at levels accomplishment: 50% 75% landscape unit desired condition landscape. Results At threshold level, hectares complementary, little overlap treated between scenarios. Additional needed reach however, overlapped substantially scenarios, indicating that tradeoffs are required level either objective. then compared ability contribute their respective objectives, including individual socio-ecological (four pillars) overall resilience based Framework Resilience. Fire primarily benefited fire-risk communities wildland urban interface. In contrast, Ecosystem exhibited greatest improvements resilience, carbon, biodiversity, but did not perform as well reducing communities. Discussion Short-term long-term can be complementary within landscape, is guaranteed co-benefit when primary Rather, improving cannot achieved quickly because many conditions require both deliberate strategic action guide location, character, timing disturbance agent, adequate time improve realized.

Язык: Английский

Процитировано

0
Wildfire management decisions outweigh mechanical treatment as the keystone to forest landscape adaptation DOI Creative Commons
Tucker J. Furniss, Nicholas A. Povak, Paul F. Hessburg

и другие.

Fire Ecology, Год журнала: 2024, Номер 20(1)

Опубликована: Дек. 18, 2024

Abstract Background Modern land management faces unprecedented uncertainty regarding future climates, novel disturbance regimes, and unanticipated ecological feedbacks. Mitigating this requires a cohesive landscape strategy that utilizes multiple methods to optimize benefits while hedging risks amidst uncertain futures. We used process-based simulation model (LANDIS-II) forecast forest management, growth, climate effects, wildfire dynamics, we distilled results using decision support tool allowing us examine tradeoffs between alternative strategies. developed plausible scenarios based on factorial combinations of restoration-oriented thinning prescriptions, prescribed fire, wildland fire use. Results were assessed continuously for 100-year period, which provided unique assessment among seven primary topics representing social , economic aspects resilience. Projected climatic changes had substantial impact modeled activity. In the Wildfire Only scenario (no treatments, but including active change), observed an upwards inflection point in area burned around mid-century (2060) detrimental impacts total carbon storage. While simulated mechanical treatments (~ 3% per year) reduced incidence high-severity it did not eliminate completely. Scenarios involving use resulted greater reductions more linear trend cumulative burned. Mechanical beneficial subtopics under topic given their positive financial return investment, better subtopics, primarily due reduction fire. Benefits mixed, reflecting inevitability landscapes rely diverse countervailing ecosystem services. Conclusions This study provides evidence optimal will involve mix passive strategies, different tactics coexist within ownerships classes. Our also emphasize importance decisions as central building robust resilient landscapes.

Язык: Английский

Процитировано

0