Impacts of anthropogenic nitrogen input and land use change on gross primary productivity in the Dongting Lake basin of China
Anthropogenic activities enhance atmospheric reactive nitrogen emission and deposition, leading to changes in gross primary productivity (GPP) by affecting vegetation species composition, growth conditions and soil properties. This study investigated the impacts of anthropogenic nitrogen input (ANI)...
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IOP Publishing
2025-01-01
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| Series: | Environmental Research Communications |
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| Online Access: | https://doi.org/10.1088/2515-7620/adcde4 |
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| author | Wenbing Ouyang Binghao Jia Lei Cai Longhuan Wang Ruixueer Wu Yanbin You |
| author_facet | Wenbing Ouyang Binghao Jia Lei Cai Longhuan Wang Ruixueer Wu Yanbin You |
| author_sort | Wenbing Ouyang |
| collection | DOAJ |
| description | Anthropogenic activities enhance atmospheric reactive nitrogen emission and deposition, leading to changes in gross primary productivity (GPP) by affecting vegetation species composition, growth conditions and soil properties. This study investigated the impacts of anthropogenic nitrogen input (ANI), land use and land cover changes (LULCC), and climate change on GPP using the Community Land Model 5.0 in the Dongting Lake Basin (DLB) from 1990 to 2020. The results indicated an overall upward trend in GPP, with annual values ranging from 1.3 to 1.6 kg·C·m ^–2 ·yr ^–1 , with higher levels in mountainous area. The promotional effect of ANI on GPP was significant; however, after ANI began to decline in 2010, GPP did not decrease correspondingly due to the buffering effect of mineral nitrogen in the soil. Overall, ANI had a positive influence on GPP in the DLB, whereas LULCC effects were mostly negative. The effects of LULCC on GPP varied across basins; cropland expansion generally inhibited GPP, while shrub expansion enhanced it. Multiple regression analysis identified shortwave radiation (53.5%) and precipitation (38%) as the primary climatic drivers of GPP variability. This study provided valuable insights for formulating policies related to balancing ecological sustainability and economic development. |
| format | Article |
| id | doaj-art-9b82bfa1e33d44e29ee4440ea6819acc |
| institution | DOAJ |
| issn | 2515-7620 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| series | Environmental Research Communications |
| spelling | doaj-art-9b82bfa1e33d44e29ee4440ea6819acc2025-08-20T02:55:42ZengIOP PublishingEnvironmental Research Communications2515-76202025-01-017404101110.1088/2515-7620/adcde4Impacts of anthropogenic nitrogen input and land use change on gross primary productivity in the Dongting Lake basin of ChinaWenbing Ouyang0https://orcid.org/0009-0001-4106-7389Binghao Jia1https://orcid.org/0000-0002-9354-0457Lei Cai2https://orcid.org/0000-0002-9794-407XLonghuan Wang3https://orcid.org/0000-0003-2363-2783Ruixueer Wu4Yanbin You5Yunnan Key Laboratory of Meteorological Disasters and Climate Resources in the Greater Mekong Subregion, Yunnan University , Kunming, People's Republic of China; State Key Laboratory of Earth System Numerical Modeling and Application, Institute of Atmospheric Physics, Chinese Academy of Sciences , Beijing, People's Republic of ChinaState Key Laboratory of Earth System Numerical Modeling and Application, Institute of Atmospheric Physics, Chinese Academy of Sciences , Beijing, People's Republic of ChinaYunnan Key Laboratory of Meteorological Disasters and Climate Resources in the Greater Mekong Subregion, Yunnan University , Kunming, People's Republic of ChinaCollege of Forestry, Beijing Forestry University , Beijing, People's Republic of ChinaState Key Laboratory of Earth System Numerical Modeling and Application, Institute of Atmospheric Physics, Chinese Academy of Sciences , Beijing, People's Republic of ChinaState Key Laboratory of Earth System Numerical Modeling and Application, Institute of Atmospheric Physics, Chinese Academy of Sciences , Beijing, People's Republic of ChinaAnthropogenic activities enhance atmospheric reactive nitrogen emission and deposition, leading to changes in gross primary productivity (GPP) by affecting vegetation species composition, growth conditions and soil properties. This study investigated the impacts of anthropogenic nitrogen input (ANI), land use and land cover changes (LULCC), and climate change on GPP using the Community Land Model 5.0 in the Dongting Lake Basin (DLB) from 1990 to 2020. The results indicated an overall upward trend in GPP, with annual values ranging from 1.3 to 1.6 kg·C·m ^–2 ·yr ^–1 , with higher levels in mountainous area. The promotional effect of ANI on GPP was significant; however, after ANI began to decline in 2010, GPP did not decrease correspondingly due to the buffering effect of mineral nitrogen in the soil. Overall, ANI had a positive influence on GPP in the DLB, whereas LULCC effects were mostly negative. The effects of LULCC on GPP varied across basins; cropland expansion generally inhibited GPP, while shrub expansion enhanced it. Multiple regression analysis identified shortwave radiation (53.5%) and precipitation (38%) as the primary climatic drivers of GPP variability. This study provided valuable insights for formulating policies related to balancing ecological sustainability and economic development.https://doi.org/10.1088/2515-7620/adcde4anthropogenic nitrogen inputgross primary productivityclimate changeDongting Lake basincommunity land modelland use and land cover change |
| spellingShingle | Wenbing Ouyang Binghao Jia Lei Cai Longhuan Wang Ruixueer Wu Yanbin You Impacts of anthropogenic nitrogen input and land use change on gross primary productivity in the Dongting Lake basin of China Environmental Research Communications anthropogenic nitrogen input gross primary productivity climate change Dongting Lake basin community land model land use and land cover change |
| title | Impacts of anthropogenic nitrogen input and land use change on gross primary productivity in the Dongting Lake basin of China |
| title_full | Impacts of anthropogenic nitrogen input and land use change on gross primary productivity in the Dongting Lake basin of China |
| title_fullStr | Impacts of anthropogenic nitrogen input and land use change on gross primary productivity in the Dongting Lake basin of China |
| title_full_unstemmed | Impacts of anthropogenic nitrogen input and land use change on gross primary productivity in the Dongting Lake basin of China |
| title_short | Impacts of anthropogenic nitrogen input and land use change on gross primary productivity in the Dongting Lake basin of China |
| title_sort | impacts of anthropogenic nitrogen input and land use change on gross primary productivity in the dongting lake basin of china |
| topic | anthropogenic nitrogen input gross primary productivity climate change Dongting Lake basin community land model land use and land cover change |
| url | https://doi.org/10.1088/2515-7620/adcde4 |
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