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

Modeling Water Potential, Decomposit...

Dann, Carson.

Linked to FindBook

Google Book

Amazon

博客來

Modeling Water Potential, Decomposition, and Nitrogen Mineralization from Surface Cover Crop Residues.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Modeling Water Potential, Decomposition, and Nitrogen Mineralization from Surface Cover Crop Residues./
Author:	Dann, Carson.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	232 p.
Notes:	Source: Masters Abstracts International, Volume: 81-12.
Contained By:	Masters Abstracts International81-12.
Subject:	Agriculture. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27831017
ISBN:	9798645490744

Modeling Water Potential, Decomposition, and Nitrogen Mineralization from Surface Cover Crop Residues.
Dann, Carson.

Modeling Water Potential, Decomposition, and Nitrogen Mineralization from Surface Cover Crop Residues. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 232 p.

Source: Masters Abstracts International, Volume: 81-12.

Thesis (M.S.)--University of Georgia, 2020.

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

Simulation models can be useful for providing predictions of surface residue decomposition and nitrogen (N) release, which is dependent on residue temperature and water potential (WP). We developed a mechanistic model of residue WP based on water transfer according to differences in WP between residue and atmosphere. The calibrated model simulated diurnal patterns in residue WP well, with R2=0.81 under no canopy and R2=0.91 under a maize canopy. The WP model was integrated into a web-based model of N mineralization and was calibrated and validated with a two-year field study. Model performance was acceptable when simulating loss of residue biomass and N, particularly for clover, as indicated by higher NSE and R2 values. The model simulated a steadily increasing amount of N mineralized and did not predict observed peaks nor N losses. We conclude the integrated model could be useful for producers when making management decisions in surface residue systems.

ISBN: 9798645490744Subjects--Topical Terms:

518588
Agriculture.
Subjects--Index Terms:

Cover crops

Modeling Water Potential, Decomposition, and Nitrogen Mineralization from Surface Cover Crop Residues.
LDR:02168nmm a2200385 4500 001 2274459
005 20201202125028.5
008 220629s2020 ||||||||||||||||| ||eng d
020 $a 9798645490744
035 $a (MiAaPQ)AAI27831017
035 $a AAI27831017
040 $a MiAaPQ $c MiAaPQ
100 1 $a Dann, Carson. $3 3551949
245 1 0 $a Modeling Water Potential, Decomposition, and Nitrogen Mineralization from Surface Cover Crop Residues.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 232 p.
500 $a Source: Masters Abstracts International, Volume: 81-12.
500 $a Advisor: Cabrera, Miguel.
502 $a Thesis (M.S.)--University of Georgia, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a Simulation models can be useful for providing predictions of surface residue decomposition and nitrogen (N) release, which is dependent on residue temperature and water potential (WP). We developed a mechanistic model of residue WP based on water transfer according to differences in WP between residue and atmosphere. The calibrated model simulated diurnal patterns in residue WP well, with R2=0.81 under no canopy and R2=0.91 under a maize canopy. The WP model was integrated into a web-based model of N mineralization and was calibrated and validated with a two-year field study. Model performance was acceptable when simulating loss of residue biomass and N, particularly for clover, as indicated by higher NSE and R2 values. The model simulated a steadily increasing amount of N mineralized and did not predict observed peaks nor N losses. We conclude the integrated model could be useful for producers when making management decisions in surface residue systems.
590 $a School code: 0077.
650 4 $a Agriculture. $3 518588
650 4 $a Sustainability. $3 1029978
650 4 $a Agronomy. $3 2122783
653 $a Cover crops
653 $a Decomposition
653 $a Diurnal relative humidity
653 $a Nitrogen mineralization
653 $a Surface residue
653 $a Water potential
690 $a 0473
690 $a 0640
690 $a 0285
710 2 $a University of Georgia. $b Crop and Soil Sciences - MS. $3 3551950
773 0 $t Masters Abstracts International $g 81-12.
790 $a 0077
791 $a M.S.
792 $a 2020
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27831017