Article
Environmental Sciences
Sibo Zeng, Georg Kaufmann, Zaihua Liu
Summary: This paper evaluates the global applicability of different environmental drivers on carbonate dissolution intensity and carbon sink flux. The study uses ecological models and satellite data to estimate global averages and compares the accuracy of different models. The results highlight the intertwined nature of natural and anthropogenic factors in shaping global carbonate dissolution intensity and carbon sink patterns.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Review
Geography, Physical
Lvfan Chen, Liangcheng Tan, Min Zhao, Ashish Sinha, Tianli Wang, Yongli Gao
Summary: This article reviews the progress and prospects of karst carbon sinks (KCS), emphasizing their important role in the global carbon budget and carbon neutrality. Further research is needed to understand the interaction mechanism between KCS and climate change and land-use variations. The establishment of a comprehensive monitoring system for the karst carbon cycle is crucial, integrating different types of carbon sinks under a research framework.
QUATERNARY INTERNATIONAL
(2023)
Article
Geosciences, Multidisciplinary
Sibo Zeng, Zaihua Liu, Chris Groves
Summary: Continental rock weathering removes atmospheric CO2 and contributes dissolved inorganic carbon in inland waters. Agricultural use of carbonate powders can enhance CO2 removal. The actual CO2 removal by weathering is estimated to be 0.166 Gt yr(-1), while the potential removal achieved by spreading carbonate powders on non-carbonate lands is 0.843 Gt yr(-1).
EARTH-SCIENCE REVIEWS
(2022)
Article
Agronomy
Linfei Yu, Guoyong Leng
Summary: This study estimated the global biophysical temperature effects of LULCC using CMIP6 climate models and found a historical global warming effect of LULCC at a rate of 0.0025 degrees C/century. Forested/non-forested secondary land, urban land, and cropland have contributed over 70% to LULCC's temperature effect, with land transitions and land management also playing significant roles in the climate impact.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Biodiversity Conservation
Lester Kwiatkowski, Olivier Torres, Olivier Aumont, James C. C. Orr
Summary: Studies have shown that the influence of increasing atmospheric CO2 and climate change on the marine CO2 system and ecosystems is mainly manifested in the variability of carbonate chemistry, including seasonal and diurnal variations. Models project that the future ocean will experience enhanced diurnal variability of pCO2 and [H+], which may impose higher metabolic costs on marine organisms.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Environmental Sciences
Sirui Zhang, Xiaoyong Bai, Cuiwei Zhao, Qiu Tan, Guangjie Luo, Jinfeng Wang, Qin Li, Luhua Wu, Fei Chen, Chaojun Li, Yuanhong Deng, Yujie Yang, Huipeng Xi
Summary: This study calculated the magnitude and distribution of the global silicate rock weathering carbon sink using high-precision data and predicted future trends. Brazil is the largest contributor to the global silicate rock weathering carbon sink, and future temperature changes will continue to impact carbon sink capacity.
Article
Agronomy
Jianyu Liu, Yuanyuan You, Jianfeng Li, Stephen Sitch, Xihui Gu, Julia E. M. S. Nabel, Danica Lombardozzi, Ming Luo, Xingyu Feng, Almut Arneth, Atul K. Jain, Pierre Friedlingstein, Hanqin Tian, Ben Poulter, Dongdong Kong
Summary: Climate change, elevated CO2 concentration, and land use change have significantly altered land evapotranspiration, with climate change being the primary driver of increased evapotranspiration. However, CO2 and land use change also play distinct roles in affecting evapotranspiration in different regions.
AGRICULTURAL AND FOREST METEOROLOGY
(2021)
Article
Environmental Sciences
Dongnan Jian, Guo-Yue Niu, Zhuguo Ma, Hongyan Liu, Dabo Guan, Xin Zhou, Juan Zhou
Summary: Drylands, the largest biome on Earth, are greatly influenced by climate change in terms of vegetation change, with climate change having a three times larger impact than elevated CO2. Land use and land cover change also play a significant role in specific regions. The contribution of elevated CO2 to vegetation greening in drylands is limited compared to the dominant climatic driving.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Review
Environmental Sciences
Hui Wang, Yanxu Liu, Yijia Wang, Ying Yao, Chenxu Wang
Summary: Identifying land cover change in drylands is crucial for understanding global environmental change, but the current findings are inconsistent due to variations in data and methods. This study compares and analyzes the main findings of land cover change in drylands at global and regional scales, with a focus on China, to enhance the overall understanding. The four main points obtained are: inconsistent vegetation greening in drylands, with some studies indicating vegetation decrease and increased bare land; precipitation, agricultural activities, and urban expansion are the major driving forces; the impact of land cover change on the water cycle, particularly afforestation, is of great concern; severe land degradation in drylands requires dataset matching to assess the impact of human activities on land cover.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Huaying Wu, Zhongcheng Jiang, Qibo Huang, Funing Lan, Hongwei Liao, Tengfang Li, Chenhui Huang
Summary: This study analyzed the chemical composition and weathering process of the weathering covers in the karst area of Guilin, Guangxi province, China, and compared them with other karst areas in the country. The results showed that the chemical composition of the weathering covers in Guilin was similar to that in other areas of China, with uniform distribution and significant enrichment of Fe, Al, and trace elements.
Article
Meteorology & Atmospheric Sciences
Jeanne Colin, Bertrand Decharme, Julien Cattiaux, David Saint-Martina
Summary: Groundwater and climate have a two-way interaction. Global climate models rarely simulate groundwater flows, and the feedbacks between global-scale groundwater and climate have been largely ignored. This study shows that incorporating unconfined aquifers in a global climate model can regionally affect temperature and precipitation changes. Groundwater has a cooling and wetting effect in certain regions, with a stronger impact under warmer climate conditions.
JOURNAL OF CLIMATE
(2023)
Article
Environmental Sciences
Haiyan Hou, Bing-Bing Zhou, Fengsong Pei, Guohua Hu, Zhongbo Su, Yijian Zeng, Han Zhang, Yukun Gao, Meng Luo, Xia Li
Summary: The anthropogenic land use/land cover change significantly affects terrestrial gross primary productivity (GPP) and leads to a decline in global terrestrial GPP in the 21st century. The contribution of LULC changes to GPP dynamics varies across different time periods and regions, but becomes trivial when the CO2 fertilization effect is incorporated into the model.
Article
Biodiversity Conservation
Jun Li, Hao Xie, Jianhong Li, Guoli Yang, Yincai Xie, Jiawei Wang, Changsong Zhou, Shengzhang Zou
Summary: This study quantitatively assessed the influences of anthropogenic acids on carbonate weathering and CO2 sink in karst wetland regions. The results showed that anthropogenic nitric acid and sulfuric acid significantly affected carbonate weathering and led to a decrease in water levels and degradation of wetland ecosystems. Furthermore, the involvement of anthropogenic acids in natural chemical weathering significantly reduced the CO2 sink, potentially impacting the karst carbon cycle and global climate change.
ECOLOGICAL INDICATORS
(2023)
Article
Meteorology & Atmospheric Sciences
Astrid Manciu, Anja Rammig, Andreas Krause, Benjamin Raphael Quesada
Summary: Colombia is vulnerable to climate change, especially due to regional deforestation. This study examines the impact of historical land cover changes and global warming on temperature and precipitation in Colombia. The results show that anthropogenic climate change has led to a temperature increase and increased precipitation, while land cover changes have reduced precipitation. La Nina events have a stronger impact in the Andes region compared to El Nino, but a weaker impact on the coast. Accurately accounting for both land cover changes and global warming is important for hydroclimatic assessments.
Article
Multidisciplinary Sciences
Christopher E. Cornwall, Steeve Comeau, Niklas A. Kornder, Chris T. Perry, Ruben van Hooidonk, Thomas M. DeCarlo, Morgan S. Pratchett, Kristen D. Anderson, Nicola Browne, Robert Carpenter, Guillermo Diaz-Pulido, Juan P. D'Olivo, Steve S. Doo, Joana Figueiredo, Sofia A. V. Fortunato, Emma Kennedy, Coulson A. Lantz, Malcolm T. McCulloch, Manuel Gonzalez-Rivero, Verena Schoepf, Scott G. Smithers, Ryan J. Lowe
Summary: Ocean warming and acidification pose a significant threat to the future growth of coral reefs, with projected declines in coral reef net carbonate production rates under different emission scenarios. Bleaching events leading to reduced coral cover are the main drivers of these declines, emphasizing the urgent need for stabilization of atmospheric CO2 emissions to ensure the functional roles of coral reefs are maintained.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Environmental Sciences
Sibo Zeng, Georg Kaufmann, Zaihua Liu
Summary: This paper evaluates the global applicability of different environmental drivers on carbonate dissolution intensity and carbon sink flux. The study uses ecological models and satellite data to estimate global averages and compares the accuracy of different models. The results highlight the intertwined nature of natural and anthropogenic factors in shaping global carbonate dissolution intensity and carbon sink patterns.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Chemistry, Analytical
Allan Philippe, Ahmad Bazoobandi, Nadine Goeppert
Summary: Soils and sediments are important repositories for anthropogenic TiO2 nanoparticles, and it is crucial to assess their environmental impact and monitor their concentration. The detection limit for anthropogenic TiO2 nanoparticles depends on the level and heterogeneity of natural TiO2 in these matrices. By combining colloidal extraction and background correction using element ratio, the limit of detection at environmentally relevant levels can be lowered.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Geosciences, Multidisciplinary
Nikolai Fahrmeier, Simon Frank, Nadine Goeppert, Nico Goldscheider
Summary: Water suppliers in southern Germany face challenges from climate change and population growth. In this study, a combination of different tracing techniques was used to characterize the aquifer system and understand groundwater flow towards the extraction wells. The results showed heterogeneity caused by the geological setting at both small and large scales.
HYDROGEOLOGY JOURNAL
(2022)
Article
Engineering, Environmental
Fan Xia, Zaihua Liu, Min Zhao, Qiang Li, Dong Li, Wenfang Cao, Cheng Zeng, Yundi Hu, Bo Chen, Qian Bao, Yi Zhang, Qiufang He, Chaowei Lai, Xuejun He, Zhen Ma, Yongqiang Han, Haibo He
Summary: The research indicates that Auto-DOM in karst ecosystems may be an important carbon sink, often overlooked as it is believed to be easily mineralized by planktonic bacteria. The fluorescence component C2 of CDOM may possess characteristics of RDOM and serve as a significant source of DOM in karst aquatic ecosystems. Additionally, high concentrations of Ca2+ and dissolved inorganic carbon (DIC) in karst ecosystems were found to impact certain planktonic bacterium and functional genes.
Article
Geosciences, Multidisciplinary
Simon Frank, Nikolai Fahrmeier, Nadine Goeppert, Nico Goldscheider
Summary: This study investigates the response of two karst springs to rainfall events and finds that parameters such as total organic carbon, particle-size distribution, and particle load show a good correlation to fecal indicator bacteria and can be used as real-time indicators of fecal contamination. Additionally, the activity of beta-D-glucuronidase can be used as an additional real-time indicator. The results highlight the vulnerability of karst aquifers and demonstrate the applicability of advanced measurement techniques in detecting fecal contamination in real-time.
HYDROGEOLOGY JOURNAL
(2022)
Article
Engineering, Civil
Yi Zhang, Zaihua Liu, Yang Wu, Song Ma, Wenfang Cao, Chaowei Lai, Qian Bao, Fan Xia, Hailong Sun, Yundi Hu, Xing Liu, Haibo He
Summary: Reducing nutrient input in aquatic ecosystems has been recognized as a way to mitigate eutrophication, but the role of carbon limitation has been overlooked. This study tested the co-limitation of C/N/P on the growth of submerged macrophytes and phytoplankton in a typical karst lake, showing that dissolved inorganic carbon plays a substantial role in enhancing primary production and that submerged macrophytes inhibit phytoplankton growth.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Mingxing Yang, Zaihua Liu, Hailong Sun, Min Zhao, Haibo He
Summary: This study investigated the molecular composition of lipid biomarkers in different areas along the Pearl River to understand the delivery and preservation mechanisms of autochthonous organic carbon (AOC). The results showed that samples with high dissolved inorganic carbon (DIC) concentration had aquatic autochthonous signatures, while samples with low DIC concentration had more terrestrial contributions. Additionally, the study found that the percentage of AOC was higher in winter due to intense precipitation and flood erosion. Vertical variability was mainly observed in areas with intense flood erosion, leading to the mixing and deposition of resuspended sediments.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Environmental Sciences
Qian Bao, Zaihua Liu, Min Zhao, Hailong Sun, Yundi Hu, Dong Li, Cheng Zeng, Yu Wei, Yi Zhang, Haibo He
Summary: Land use change has a significant impact on the hydrochemical features, nutrient outputs, and community structure of aquatic photosynthetic organisms in watersheds, especially in terms of C, N, and P biogeochemical processes. This study investigated the relationship between hydrochemical features, aquatic photosynthetic organism community structure, and C, N, and P deposition in surface waters associated with different land uses. The results showed that grassland and shrubland increased the deposition of calcium-bound and biogenic P, contributing to the formation of benign aquatic ecosystems and stabilization of C, N, and P sinks.
ENVIRONMENTAL RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Xinyang Fan, Nadine Goeppert, Nico Goldscheider
Summary: This study quantifies the responses of karst discharge to historic and future climatic changes, revealing the impacts of climate change on floods and droughts at springs in central Europe and the water scarcity risks in similar geological conditions worldwide.
HYDROGEOLOGY JOURNAL
(2023)
Article
Water Resources
Yanina K. Mueller, Nico Goldscheider, Elisabeth Eiche, Hanna Emberger, Nadine Goeppert
Summary: Karst aquifers are vulnerable to contamination, particularly during heavy rainfall events. This study conducted a tracer test with suspended cave sediments and solute tracers in a karst aquifer in Southern Germany to investigate the transport processes of particulate matter and associated pollutants. Results showed that sediment particles were transported faster than solutes, and their transport was influenced by the main flow path. The study provides insights into the transport processes of sediment-associated contaminants in karst aquifers.
HYDROLOGICAL PROCESSES
(2023)
Article
Environmental Sciences
Chaowei Lai, Zhen Ma, Zaihua Liu, Hailong Sun, Qingchun Yu, Fan Xia, Xuejun He, Qian Bao, Yongqiang Han, Xing Liu, Haibo He
Summary: This study investigated the relationships between phytoplankton and dissolved inorganic carbon (DIC) concentrations, as well as carbon isotopic composition, nutrients, and hydrochemistry in Erhai Lake. The results showed that DIC significantly affected phytoplankton productivity and community composition, particularly inhibiting harmful cyanobacteria blooms. Therefore, considering DIC could effectively assist in mitigating lake eutrophication.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Engineering, Civil
Fan Xia, Zaihua Liu, Min Zhao, Haibo He, Qiufang He, Chaowei Lai, Xuejun He, Zhen Ma, Yang Wu, Song Ma
Summary: This study investigated the burial process of recalcitrant dissolved organic matter (RDOM) in Erhai lake, China, and found that autochthonous organic matter plays a significant role in the lake's carbon sink. It provides a new perspective for studying the stability of autochthonous organic matter and highlights the importance of studying carbon sinks in inland lakes.
JOURNAL OF HYDROLOGY
(2023)
