東華大學圖書館 |

A Macrosystems Approach Towards Improved Understanding of Interactions Between Forest Management, Structure, Function and Climate Change, and Implications for the Terrestrial Carbon Cycle.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A Macrosystems Approach Towards Improved Understanding of Interactions Between Forest Management, Structure, Function and Climate Change, and Implications for the Terrestrial Carbon Cycle./
作者:	Murphy, Bailey A.
面頁冊數:	1 online resource (271 pages)
附註:	Source: Dissertations Abstracts International, Volume: 85-02, Section: B.
Contained By:	Dissertations Abstracts International85-02B.
標題:	Atmospheric sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30637160click for full text (PQDT)
ISBN:	9798380141611

A Macrosystems Approach Towards Improved Understanding of Interactions Between Forest Management, Structure, Function and Climate Change, and Implications for the Terrestrial Carbon Cycle.
Murphy, Bailey A.

A Macrosystems Approach Towards Improved Understanding of Interactions Between Forest Management, Structure, Function and Climate Change, and Implications for the Terrestrial Carbon Cycle. - 1 online resource (271 pages)

Source: Dissertations Abstracts International, Volume: 85-02, Section: B.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 2023.

Includes bibliographical references

Forests constitute a significant global carbon sink that continues to expand in size, in addition to supporting a range of environmental, economic, and social co-benefits. Forests interact with the overlying atmosphere through exchanges of carbon, water, and energy, and because of the climatic relevance of these fluxes, processes related to terrestrial ecology and land use have a considerable impact on global climate. The comparatively large size of the forest carbon sink in combination with the complimentary climate feedbacks it provides give it significant potential as an avenue for climate mitigation through management practices designed to enhance carbon sequestration.However, anthropogenic management and shifting environmental conditions due to climate change modify forest structure and function, which fundamentally alters land-atmosphere exchanges and the resultant feedbacks with climate. Gaps remain in our understanding of how forest management, structure, function, and climate change interact across long timescales, and whether relationships are spatially dependent, particularly with regards to vulnerabilities of forest function to climate change. These knowledge gaps manifest as substantial uncertainty surrounding the future of the terrestrial carbon sink and other ecosystem services, and the viability of improved forest management as a climate mitigation strategy hinges on addressing these uncertainties.Here, we sought to address three overarching questions: 1) What is the mechanistic relationship between forest structure and function? 2) What is the primary driver of future shifts in forest function? And 3) How does management impact the stability of forest function in the face of climate change? Observational data from the Chequamegon Heterogeneous Ecosystem Energy-balance Study Enabled by a High-density Extensive Array of Detectors 2019 (CHEESEHEAD19) field campaign was used to construct simplified models of the mechanistic relationships between forest structure and function and evaluate spatial dependence. We found that the mechanistic relationship between forest structure and function is mediated by resource use efficiency, is dependent upon the spatial resolution used to calculate structural complexity metrics, and that structural metrics representing the degree of vertical heterogeneity are the most influential productivity drivers for heterogeneous temperate forests. Next, a process-based model was employed to simulate multi-decadal projections of vegetation demographics in response to management, using data from National Ecological Observatory Network (NEON) core terrestrial sites in two U.S. regions. Additionally, downscaled global climate model (GCM) output under two future radiative forcing scenarios (RCP4.5 and RCP8.5) was used to drive model meteorology, allowing for the approximation of vegetation responses to shifting climatic conditions, and facilitating understanding of how management might moderate those responses. With this approach, we showed that management is the strongest driver of future variability in forest function at the regional scale, but that at broader spatial scales gradients in future climate become critical. The narrow precedence of climate over management as a driver of forest function at the sub-continental scale suggests that their effects are likely not independent of one another. We also found that temporal stability is driven primarily by climate, while resilience is shaped by management, but that the impact of management on forest functional stability is regionally dependent and varies by management intensity and severity.These findings allow us to improve representation in ecosystem models of how structural complexity impacts light and water-sensitive processes, and ultimately productivity. Improved models enhance our capacity to accurately simulate forest responses to management, furthering our ability to assess climate mitigation strategies. Additionally, these findings highlight the regional dependency of the response of forest function to management and climate change, and caution that the same management approach is not necessarily viable everywhere, meaning that the durability of management related Nature-based Climate Solutions have to be assessed at the regional scale. This information can help forest managers evaluate trade offs between ecosystem goods and services, assess climate risks of applying management practices in different regions, and potentially identify specific components of ecosystem function to bolster through targeted management practices.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798380141611Subjects--Topical Terms:

3168354
Atmospheric sciences.
Subjects--Index Terms:

Carbon cycleIndex Terms--Genre/Form:

542853
Electronic books.

A Macrosystems Approach Towards Improved Understanding of Interactions Between Forest Management, Structure, Function and Climate Change, and Implications for the Terrestrial Carbon Cycle.
LDR:06117nmm a2200409K 4500 001 2363244
005 20231116093836.5
006 m o d
007 cr mn ---uuuuu
008 241011s2023 xx obm 000 0 eng d
020 $a 9798380141611
035 $a (MiAaPQ)AAI30637160
035 $a AAI30637160
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Murphy, Bailey A. $3 3703999
245 1 2 $a A Macrosystems Approach Towards Improved Understanding of Interactions Between Forest Management, Structure, Function and Climate Change, and Implications for the Terrestrial Carbon Cycle.
264 0 $c 2023
300 $a 1 online resource (271 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 85-02, Section: B.
500 $a Advisor: Desai, Ankur R.
502 $a Thesis (Ph.D.)--The University of Wisconsin - Madison, 2023.
504 $a Includes bibliographical references
520 $a Forests constitute a significant global carbon sink that continues to expand in size, in addition to supporting a range of environmental, economic, and social co-benefits. Forests interact with the overlying atmosphere through exchanges of carbon, water, and energy, and because of the climatic relevance of these fluxes, processes related to terrestrial ecology and land use have a considerable impact on global climate. The comparatively large size of the forest carbon sink in combination with the complimentary climate feedbacks it provides give it significant potential as an avenue for climate mitigation through management practices designed to enhance carbon sequestration.However, anthropogenic management and shifting environmental conditions due to climate change modify forest structure and function, which fundamentally alters land-atmosphere exchanges and the resultant feedbacks with climate. Gaps remain in our understanding of how forest management, structure, function, and climate change interact across long timescales, and whether relationships are spatially dependent, particularly with regards to vulnerabilities of forest function to climate change. These knowledge gaps manifest as substantial uncertainty surrounding the future of the terrestrial carbon sink and other ecosystem services, and the viability of improved forest management as a climate mitigation strategy hinges on addressing these uncertainties.Here, we sought to address three overarching questions: 1) What is the mechanistic relationship between forest structure and function? 2) What is the primary driver of future shifts in forest function? And 3) How does management impact the stability of forest function in the face of climate change? Observational data from the Chequamegon Heterogeneous Ecosystem Energy-balance Study Enabled by a High-density Extensive Array of Detectors 2019 (CHEESEHEAD19) field campaign was used to construct simplified models of the mechanistic relationships between forest structure and function and evaluate spatial dependence. We found that the mechanistic relationship between forest structure and function is mediated by resource use efficiency, is dependent upon the spatial resolution used to calculate structural complexity metrics, and that structural metrics representing the degree of vertical heterogeneity are the most influential productivity drivers for heterogeneous temperate forests. Next, a process-based model was employed to simulate multi-decadal projections of vegetation demographics in response to management, using data from National Ecological Observatory Network (NEON) core terrestrial sites in two U.S. regions. Additionally, downscaled global climate model (GCM) output under two future radiative forcing scenarios (RCP4.5 and RCP8.5) was used to drive model meteorology, allowing for the approximation of vegetation responses to shifting climatic conditions, and facilitating understanding of how management might moderate those responses. With this approach, we showed that management is the strongest driver of future variability in forest function at the regional scale, but that at broader spatial scales gradients in future climate become critical. The narrow precedence of climate over management as a driver of forest function at the sub-continental scale suggests that their effects are likely not independent of one another. We also found that temporal stability is driven primarily by climate, while resilience is shaped by management, but that the impact of management on forest functional stability is regionally dependent and varies by management intensity and severity.These findings allow us to improve representation in ecosystem models of how structural complexity impacts light and water-sensitive processes, and ultimately productivity. Improved models enhance our capacity to accurately simulate forest responses to management, furthering our ability to assess climate mitigation strategies. Additionally, these findings highlight the regional dependency of the response of forest function to management and climate change, and caution that the same management approach is not necessarily viable everywhere, meaning that the durability of management related Nature-based Climate Solutions have to be assessed at the regional scale. This information can help forest managers evaluate trade offs between ecosystem goods and services, assess climate risks of applying management practices in different regions, and potentially identify specific components of ecosystem function to bolster through targeted management practices.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Atmospheric sciences. $3 3168354
650 4 $a Ecology. $3 516476
650 4 $a Climate change. $2 bicssc $3 2079509
650 4 $a Forestry. $3 895157
653 $a Carbon cycle
653 $a Forest management
653 $a Vegetation demography
653 $a Terrestrial ecology
653 $a GCM
655 7 $a Electronic books. $2 lcsh $3 542853
690 $a 0725
690 $a 0329
690 $a 0404
690 $a 0478
710 2 $a ProQuest Information and Learning Co. $3 783688
710 2 $a The University of Wisconsin - Madison. $b Atmospheric & Oceanic Sciences. $3 3350321
773 0 $t Dissertations Abstracts International $g 85-02B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30637160 $z click for full text (PQDT)