Both day and night warming reduce tree growth in extremely dry soils
Trees in global forests are exposed to warming climate, the rate of which is different between day and night, and associated with soil drought. Previous studies commonly show that forest growth responds positively to daytime warming but negatively to night warming. However, it remains unclear whethe...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Environmental Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1748-9326/aba65e |
| _version_ | 1797747817772482560 |
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| author | Chen Zhu Erqian Cui Jianyang Xia |
| author_facet | Chen Zhu Erqian Cui Jianyang Xia |
| author_sort | Chen Zhu |
| collection | DOAJ |
| description | Trees in global forests are exposed to warming climate, the rate of which is different between day and night, and associated with soil drought. Previous studies commonly show that forest growth responds positively to daytime warming but negatively to night warming. However, it remains unclear whether such asymmetric responses of forest growth to day and night warming still exist in extremely dry soils. Here, based on the long-term records of the normalized difference vegetation index and ring-width index at 2294 forest sites across the Northern Hemisphere, we found that the rising daytime maximum temperature ( T _max ) reduces stem growth but the rising nighttime minimum temperature ( T _min ) lowers canopy greenness when the soil is drier than a threshold. We further discuss three mechanisms that could drive such negative impacts. For example, data from experimental studies showed that the shifted biomass allocation from wood to leaves is one important mechanism driving the reductions of wood growth under day warming. These findings indicate that climate warming could negatively affect tree growth in extremely dry soils, regardless of whether temperature rises during the daytime or at night. Thus, understanding the interactions of water and temperature on the sub-diurnal scale is critical for improving our ability to predict the forest dynamics under future climate change. |
| first_indexed | 2024-03-12T15:57:05Z |
| format | Article |
| id | doaj.art-c511dc0167664299ba6a8bcbfdbf2bdb |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T15:57:05Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-c511dc0167664299ba6a8bcbfdbf2bdb2023-08-09T14:53:26ZengIOP PublishingEnvironmental Research Letters1748-93262020-01-0115909407410.1088/1748-9326/aba65eBoth day and night warming reduce tree growth in extremely dry soilsChen Zhu0https://orcid.org/0000-0002-4104-8591Erqian Cui1https://orcid.org/0000-0002-2639-5069Jianyang Xia2https://orcid.org/0000-0001-5923-6665Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco‐Restoration, School of Ecological and Environmental Sciences, East China Normal University , Shanghai 200241, People’s Republic of China; Center for Global Change and Ecological Forecasting, East China Normal University , Shanghai, People’s Republic of ChinaZhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco‐Restoration, School of Ecological and Environmental Sciences, East China Normal University , Shanghai 200241, People’s Republic of China; Center for Global Change and Ecological Forecasting, East China Normal University , Shanghai, People’s Republic of ChinaZhejiang Tiantong Forest Ecosystem National Observation and Research Station, Shanghai Key Lab for Urban Ecological Processes and Eco‐Restoration, School of Ecological and Environmental Sciences, East China Normal University , Shanghai 200241, People’s Republic of China; Center for Global Change and Ecological Forecasting, East China Normal University , Shanghai, People’s Republic of ChinaTrees in global forests are exposed to warming climate, the rate of which is different between day and night, and associated with soil drought. Previous studies commonly show that forest growth responds positively to daytime warming but negatively to night warming. However, it remains unclear whether such asymmetric responses of forest growth to day and night warming still exist in extremely dry soils. Here, based on the long-term records of the normalized difference vegetation index and ring-width index at 2294 forest sites across the Northern Hemisphere, we found that the rising daytime maximum temperature ( T _max ) reduces stem growth but the rising nighttime minimum temperature ( T _min ) lowers canopy greenness when the soil is drier than a threshold. We further discuss three mechanisms that could drive such negative impacts. For example, data from experimental studies showed that the shifted biomass allocation from wood to leaves is one important mechanism driving the reductions of wood growth under day warming. These findings indicate that climate warming could negatively affect tree growth in extremely dry soils, regardless of whether temperature rises during the daytime or at night. Thus, understanding the interactions of water and temperature on the sub-diurnal scale is critical for improving our ability to predict the forest dynamics under future climate change.https://doi.org/10.1088/1748-9326/aba65easymmetric warmingbiomass allocationdroughtforest growthtree-ring |
| spellingShingle | Chen Zhu Erqian Cui Jianyang Xia Both day and night warming reduce tree growth in extremely dry soils Environmental Research Letters asymmetric warming biomass allocation drought forest growth tree-ring |
| title | Both day and night warming reduce tree growth in extremely dry soils |
| title_full | Both day and night warming reduce tree growth in extremely dry soils |
| title_fullStr | Both day and night warming reduce tree growth in extremely dry soils |
| title_full_unstemmed | Both day and night warming reduce tree growth in extremely dry soils |
| title_short | Both day and night warming reduce tree growth in extremely dry soils |
| title_sort | both day and night warming reduce tree growth in extremely dry soils |
| topic | asymmetric warming biomass allocation drought forest growth tree-ring |
| url | https://doi.org/10.1088/1748-9326/aba65e |
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