Academic Journal
CLM5-FruitTree: a new sub-model for deciduous fruit trees in the Community Land Model (CLM5).
| Title: | CLM5-FruitTree: a new sub-model for deciduous fruit trees in the Community Land Model (CLM5). |
|---|---|
| Authors: | Dombrowski, Olga, Brogi, Cosimo, Hendricks Franssen, Harrie-Jan, Zanotelli, Damiano, Bogena, Heye |
| Source: | Geoscientific Model Development; 2022, Vol. 15 Issue 13, p5167-5193, 27p |
| Abstract: | The inclusion of perennial, woody crops in land surface models (LSMs) is crucial for addressing their role in carbon (C) sequestration, food production, and water requirements under climate change. To help quantify the biogeochemical and biogeophysical processes associated with these agroecosystems, we developed and tested a new sub-model, CLM5-FruitTree, for deciduous fruit orchards within the framework of the Community Land Model version 5 (CLM5). The model development included (1) a new perennial crop phenology description, (2) an adapted C and nitrogen allocation scheme, considering both storage and photosynthetic growth of annual and perennial plant organs, (3) typical management practices associated with fruit orchards, and (4) the parameterization of an apple plant functional type. CLM5-FruitTree was tested using extensive field measurements from an apple orchard in South Tyrol, Italy. Growth and partitioning of biomass to the individual plant components were well represented by CLM5-FruitTree, and average yield was predicted within 2.3 % of the observed values despite low simulated inter-annual variability compared to observations. The simulated seasonal course of C, energy, and water fluxes was in good agreement with the eddy covariance (EC) measurements owing to the accurate representation of the prolonged growing season and typical leaf area development of the orchard. We found that gross primary production, net radiation, and latent heat flux were highly correlated (r>0.94) with EC measurements and showed little bias (<±5 %). Simulated respiration components, sensible heat, and soil heat flux were less consistent with observations. This was attributed to simplifications in the orchard structure and to the presence of additional management practices that are not yet represented in CLM5-FruitTree. Finally, the results suggested that the representation of microbial and autotrophic respiration and energy partitioning in complex, discontinuous canopies in CLM5 requires further attention. The new CLM5-FruitTree sub-model improved the representation of agricultural systems in CLM5 and can be used to study land surface processes in fruit orchards at the local, regional, or larger scale. [ABSTRACT FROM AUTHOR] |
| Subject Terms: | ORCHARDS, DECIDUOUS plants, FRUIT trees, PLANT phenology, APPLE orchards, PLANT biomass, FOOD crops |
| Geographic Terms: | TRENTINO-Alto Adige (Italy) |
| Copyright of Geoscientific Model Development is the property of Copernicus Gesellschaft mbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| ISSN: | 1991959X |
| DOI: | 10.5194/gmd-15-5167-2022 |
| Database: | Complementary Index |
Availability