Quantifying the impacts of drought and ecological restoration on net primary production changes in the Chinese Loess Plateau
Net primary production (NPP) can regulate global climate change and carbon balance. Although scholars have qualitatively studied the influencing factors of NPP, few have quantified the contribution of different degrees of drought aggravation or mitigation and major land-use changes to NPP changes. B...
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| description | Net primary production (NPP) can regulate global climate change and carbon balance. Although scholars have qualitatively studied the influencing factors of NPP, few have quantified the contribution of different degrees of drought aggravation or mitigation and major land-use changes to NPP changes. Based on the temporal and spatial characteristics of NPP for 2000-2015 in the Chinese Loess Plateau, we quantified the contribution of drought, land use and land cover change (LUCC), and hydrothermal conditions to changes in NPP. Particularly, we analyzed the contribution of major land-use change and different drought levels to NPP. Our results showed that the 15-years average NPP was approximately 227 gC/m.sup.2 and decreased from southeast to northwest. Overall, NPP showed a linear increasing trend over the 15-years period. The results suggested that changes in hydrothermal conditions had the strongest impact on NPP (~61%), followed by drought (~33%), and land use and land cover change had the weakest impact (~1.4%). In particular, ~13% of the NPP decreases was affected by light drought aggravation, ~10% of the NPP decreases was affected by moderate drought aggravation, and ~0.3% was affected by the conversion of cropland to grassland or non-NPP main production land. Moreover, ~12.7% of the NPP increase was affected by light drought alleviation, ~9.4% was affected by moderate drought alleviation, and ~1.1% was affected by the conversion of grassland to cropland or forestland. The mechanisms underlying the effect of drought and land-use change on NPP were clarified and provide an important reference value for future research on the carbon cycle and regional ecological environmental restoration. |
| doi_str_mv | 10.1371/journal.pone.0238997 |
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Although scholars have qualitatively studied the influencing factors of NPP, few have quantified the contribution of different degrees of drought aggravation or mitigation and major land-use changes to NPP changes. Based on the temporal and spatial characteristics of NPP for 2000-2015 in the Chinese Loess Plateau, we quantified the contribution of drought, land use and land cover change (LUCC), and hydrothermal conditions to changes in NPP. Particularly, we analyzed the contribution of major land-use change and different drought levels to NPP. Our results showed that the 15-years average NPP was approximately 227 gC/m.sup.2 and decreased from southeast to northwest. Overall, NPP showed a linear increasing trend over the 15-years period. The results suggested that changes in hydrothermal conditions had the strongest impact on NPP (~61%), followed by drought (~33%), and land use and land cover change had the weakest impact (~1.4%). In particular, ~13% of the NPP decreases was affected by light drought aggravation, ~10% of the NPP decreases was affected by moderate drought aggravation, and ~0.3% was affected by the conversion of cropland to grassland or non-NPP main production land. Moreover, ~12.7% of the NPP increase was affected by light drought alleviation, ~9.4% was affected by moderate drought alleviation, and ~1.1% was affected by the conversion of grassland to cropland or forestland. The mechanisms underlying the effect of drought and land-use change on NPP were clarified and provide an important reference value for future research on the carbon cycle and regional ecological environmental restoration.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0238997</identifier><identifier>PMID: 32970703</identifier><language>eng</language><publisher>San Francisco: Public Library of Science</publisher><subject>Agricultural land ; Agricultural productivity ; Biology and Life Sciences ; Carbon ; Carbon cycle ; China ; Climate change ; Conversion ; Drought ; Droughts ; Earth Sciences ; Ecological restoration ; Ecology and Environmental Sciences ; Economic aspects ; Environmental aspects ; Environmental impact ; Environmental restoration ; Global climate ; Grasslands ; Greenhouse gases ; Land cover ; Land use ; Mitigation ; Net Primary Productivity ; Precipitation ; Primary production ; Restoration ; Social Sciences ; Tourism ; Vegetation</subject><ispartof>PloS one, 2020-09, Vol.15 (9), p.e0238997</ispartof><rights>COPYRIGHT 2020 Public Library of Science</rights><rights>2020 Jiang, Bai. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2020 Jiang, Bai 2020 Jiang, Bai</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c669t-1744501d557bb20655c38a7f47db1317af9ef54ede4490728f418c33a335484a3</citedby><cites>FETCH-LOGICAL-c669t-1744501d557bb20655c38a7f47db1317af9ef54ede4490728f418c33a335484a3</cites><orcidid>0000-0002-1966-9068</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7514050/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7514050/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,725,778,782,862,883,2098,2917,23849,27907,27908,53774,53776,79351,79352</link.rule.ids></links><search><contributor>Liu, Jian</contributor><creatorcontrib>Jiang, Xiaowei</creatorcontrib><creatorcontrib>Bai, Jianjun</creatorcontrib><title>Quantifying the impacts of drought and ecological restoration on net primary production changes in the Chinese Loess Plateau</title><title>PloS one</title><description>Net primary production (NPP) can regulate global climate change and carbon balance. Although scholars have qualitatively studied the influencing factors of NPP, few have quantified the contribution of different degrees of drought aggravation or mitigation and major land-use changes to NPP changes. Based on the temporal and spatial characteristics of NPP for 2000-2015 in the Chinese Loess Plateau, we quantified the contribution of drought, land use and land cover change (LUCC), and hydrothermal conditions to changes in NPP. Particularly, we analyzed the contribution of major land-use change and different drought levels to NPP. Our results showed that the 15-years average NPP was approximately 227 gC/m.sup.2 and decreased from southeast to northwest. Overall, NPP showed a linear increasing trend over the 15-years period. The results suggested that changes in hydrothermal conditions had the strongest impact on NPP (~61%), followed by drought (~33%), and land use and land cover change had the weakest impact (~1.4%). In particular, ~13% of the NPP decreases was affected by light drought aggravation, ~10% of the NPP decreases was affected by moderate drought aggravation, and ~0.3% was affected by the conversion of cropland to grassland or non-NPP main production land. Moreover, ~12.7% of the NPP increase was affected by light drought alleviation, ~9.4% was affected by moderate drought alleviation, and ~1.1% was affected by the conversion of grassland to cropland or forestland. The mechanisms underlying the effect of drought and land-use change on NPP were clarified and provide an important reference value for future research on the carbon cycle and regional ecological environmental restoration.</description><subject>Agricultural land</subject><subject>Agricultural productivity</subject><subject>Biology and Life Sciences</subject><subject>Carbon</subject><subject>Carbon cycle</subject><subject>China</subject><subject>Climate change</subject><subject>Conversion</subject><subject>Drought</subject><subject>Droughts</subject><subject>Earth Sciences</subject><subject>Ecological restoration</subject><subject>Ecology and Environmental Sciences</subject><subject>Economic aspects</subject><subject>Environmental aspects</subject><subject>Environmental impact</subject><subject>Environmental restoration</subject><subject>Global climate</subject><subject>Grasslands</subject><subject>Greenhouse gases</subject><subject>Land cover</subject><subject>Land 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climate</topic><topic>Grasslands</topic><topic>Greenhouse gases</topic><topic>Land cover</topic><topic>Land use</topic><topic>Mitigation</topic><topic>Net Primary Productivity</topic><topic>Precipitation</topic><topic>Primary production</topic><topic>Restoration</topic><topic>Social Sciences</topic><topic>Tourism</topic><topic>Vegetation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jiang, Xiaowei</creatorcontrib><creatorcontrib>Bai, Jianjun</creatorcontrib><collection>CrossRef</collection><collection>Gale In Context: Opposing Viewpoints</collection><collection>Gale In Context: Science</collection><collection>ProQuest Central (Corporate)</collection><collection>Animal Behavior Abstracts</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Biotechnology Research Abstracts</collection><collection>Nursing & Allied Health Database</collection><collection>Ecology Abstracts</collection><collection>Entomology 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Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Jiang, Xiaowei</au><au>Bai, Jianjun</au><au>Liu, Jian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quantifying the impacts of drought and ecological restoration on net primary production changes in the Chinese Loess Plateau</atitle><jtitle>PloS one</jtitle><date>2020-09-24</date><risdate>2020</risdate><volume>15</volume><issue>9</issue><spage>e0238997</spage><pages>e0238997-</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>Net primary production (NPP) can regulate global climate change and carbon balance. Although scholars have qualitatively studied the influencing factors of NPP, few have quantified the contribution of different degrees of drought aggravation or mitigation and major land-use changes to NPP changes. Based on the temporal and spatial characteristics of NPP for 2000-2015 in the Chinese Loess Plateau, we quantified the contribution of drought, land use and land cover change (LUCC), and hydrothermal conditions to changes in NPP. Particularly, we analyzed the contribution of major land-use change and different drought levels to NPP. Our results showed that the 15-years average NPP was approximately 227 gC/m.sup.2 and decreased from southeast to northwest. Overall, NPP showed a linear increasing trend over the 15-years period. The results suggested that changes in hydrothermal conditions had the strongest impact on NPP (~61%), followed by drought (~33%), and land use and land cover change had the weakest impact (~1.4%). In particular, ~13% of the NPP decreases was affected by light drought aggravation, ~10% of the NPP decreases was affected by moderate drought aggravation, and ~0.3% was affected by the conversion of cropland to grassland or non-NPP main production land. Moreover, ~12.7% of the NPP increase was affected by light drought alleviation, ~9.4% was affected by moderate drought alleviation, and ~1.1% was affected by the conversion of grassland to cropland or forestland. The mechanisms underlying the effect of drought and land-use change on NPP were clarified and provide an important reference value for future research on the carbon cycle and regional ecological environmental restoration.</abstract><cop>San Francisco</cop><pub>Public Library of Science</pub><pmid>32970703</pmid><doi>10.1371/journal.pone.0238997</doi><tpages>e0238997</tpages><orcidid>https://orcid.org/0000-0002-1966-9068</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Agricultural land Agricultural productivity Biology and Life Sciences Carbon Carbon cycle China Climate change Conversion Drought Droughts Earth Sciences Ecological restoration Ecology and Environmental Sciences Economic aspects Environmental aspects Environmental impact Environmental restoration Global climate Grasslands Greenhouse gases Land cover Land use Mitigation Net Primary Productivity Precipitation Primary production Restoration Social Sciences Tourism Vegetation |
| title | Quantifying the impacts of drought and ecological restoration on net primary production changes in the Chinese Loess Plateau |
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