東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

An Investigation of Root Biomass in ...

Caldwell, Benjamin Thomas.

Linked to FindBook

Google Book

Amazon

博客來

An Investigation of Root Biomass in Forested Ecosystems.

Record Type:	Electronic resources : Monograph/item
Title/Author:	An Investigation of Root Biomass in Forested Ecosystems./
Author:	Caldwell, Benjamin Thomas.
Description:	99 p.
Notes:	Source: Dissertation Abstracts International, Volume: 76-02(E), Section: B.
Contained By:	Dissertation Abstracts International76-02B(E).
Subject:	Ecology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3640372
ISBN:	9781321258288

An Investigation of Root Biomass in Forested Ecosystems.
Caldwell, Benjamin Thomas.

An Investigation of Root Biomass in Forested Ecosystems. - 99 p.

Source: Dissertation Abstracts International, Volume: 76-02(E), Section: B.

Thesis (Ph.D.)--University of California, Berkeley, 2014.

This item must not be sold to any third party vendors.

The root systems of forest ecosystem are both important and understudied. Roots function as the critical organs of nutrient uptake and anchor tree stems against wind throw and aboveground disturbance. Roots are also an important terrestrial reservoir of carbon and play an important role in global climate. Conversion or disturbance of forest lands can result in an emission of carbon dioxide to the atmosphere, and so quantifying the amount of carbon in root biomass is of interest for forest scientists and the climate policy their research informs.

ISBN: 9781321258288Subjects--Topical Terms:

516476
Ecology.

An Investigation of Root Biomass in Forested Ecosystems.
LDR:02923nmm a2200325 4500 001 2058632
005 20150716112103.5
008 170521s2014 ||||||||||||||||| ||eng d
020 $a 9781321258288
035 $a (MiAaPQ)AAI3640372
035 $a AAI3640372
040 $a MiAaPQ $c MiAaPQ
100 1 $a Caldwell, Benjamin Thomas. $3 3172618
245 1 3 $a An Investigation of Root Biomass in Forested Ecosystems.
300 $a 99 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-02(E), Section: B.
500 $a Adviser: Kevin O'Hara.
502 $a Thesis (Ph.D.)--University of California, Berkeley, 2014.
506 $a This item must not be sold to any third party vendors.
520 $a The root systems of forest ecosystem are both important and understudied. Roots function as the critical organs of nutrient uptake and anchor tree stems against wind throw and aboveground disturbance. Roots are also an important terrestrial reservoir of carbon and play an important role in global climate. Conversion or disturbance of forest lands can result in an emission of carbon dioxide to the atmosphere, and so quantifying the amount of carbon in root biomass is of interest for forest scientists and the climate policy their research informs.
520 $a This dissertation contributes to the science of root biomass measurement and modeling, providing techniques and approaches to improve those estimates, and models for leaf area that can be used to estimate root biomass. It focuses on techniques to improve measurement of root biomass using ground penetrating radar, an emergent method to measure root biomass. First, I investigate what above-ground metrics might best be used to model and predict root biomass and distribution and I develop new models relating basal area to leaf area for quaking aspen (Populus tremuloides) in the Sierra Nevada. Second, I investigate root biomass and distribution in coast redwood ( Sequoia sempervirens), and how water acquisition may drive the allocation to roots in redwoods.
520 $a Ground penetrating radar is shown to have considerable utility for the measurement of coarse root biomass. Above ground biomass is shown to be an excellent predictor of coarse root biomass in Sierran ecosystems. Leaf area, which is predicted by pipe model theory to have a tight relationship with fine root biomass, is shown to have some predictive power for root biomass, and my model represents an improvement over other reported metrics. Finally, I conclude that global root biomass estimates have not been based on reliable or unbiased data to date and I contribute A plan to correct this gap in future global estimates.
590 $a School code: 0028.
650 4 $a Ecology. $3 516476
650 4 $a Forestry. $3 895157
650 4 $a Environmental studies. $3 2122803
690 $a 0329
690 $a 0478
690 $a 0477
710 2 $a University of California, Berkeley. $b Environmental Science, Policy, & Management. $3 1678657
773 0 $t Dissertation Abstracts International $g 76-02B(E).
790 $a 0028
791 $a Ph.D.
792 $a 2014
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3640372