Extreme heat events over both lands and oceans have increased in frequency and intensity,and exerted profound impacts on human and natural systems.More impactful is their concurrence,leading to larger losses in health...Extreme heat events over both lands and oceans have increased in frequency and intensity,and exerted profound impacts on human and natural systems.More impactful is their concurrence,leading to larger losses in health,food,economy,and ecosystem,but receiving far less attention.Understanding the mechanism for such marine–terrestrial compound heatwaves is a prerequisite to prediction and disaster prevention.Based on air particle trajectory analysis,we identified 87 compound heatwaves in China and adjacent oceans in summers of 1982–2021,with the connection between marine and terrestrial heatwaves particularly prominent between the oceans to Northeast Philippines and the lands in South/Southeast China.Through composite and case analysis,it is found that the connection is established by simultaneous governance of(i)the western Pacific subtropical high(WPSH),(ii)a dipole circulation pattern constituted by the WPSH and weak tropical cyclones(TCs),or(iii)strong and closer-to-coast TCs,each of which causes anomalously strong descending motion,increased incoming solar radiation,and strengthened adiabatic heating on lands.The marine heatwaves act to supply more moisture through enhanced evaporation,and/or intensify TCs that pass the region.The air particle tracking shows that these moister air masses are then advected by the WPSH and/or TCs to South/Southeast China,converting the adiabatic heating-caused dry heatwaves there into humid ones and thus adding to the heat stress.These diagnoses provide new insight into the mechanistic understanding and forecast precursors for terrestrial heatwaves,through the lens of compound events.展开更多
The measuring of the integration degree between marine and terrestrial industries is a crucial part in formulating strategies of industrial adjustment and industrial development for coastal regions. Taking the Blue Ec...The measuring of the integration degree between marine and terrestrial industries is a crucial part in formulating strategies of industrial adjustment and industrial development for coastal regions. Taking the Blue Economic Zone of Shandong Peninsula as an example, this paper conducted grey correlation analysis on the correlation between the three industrial sectors in marine and terrestrial areas, as well as on the internal interaction between main industries in marine and terrestrial areas. In the end, the paper puts forward related suggestions on the integrated development of marine and terrestrial industries in the Blue Economic Zone of the Shandong Peninsula.展开更多
People have long been curious about the history of life on the earth-how many different species have existed, when they first occurred, how they evolved over geologic time, and how they reacted to major environmental ...People have long been curious about the history of life on the earth-how many different species have existed, when they first occurred, how they evolved over geologic time, and how they reacted to major environmental crises.展开更多
Plastic is considered one of the most indispensable commodities in our daily life.At the end of life,the huge ever-growing pile of plastic waste(PW)causes serious concerns for our environment,including agricultural fa...Plastic is considered one of the most indispensable commodities in our daily life.At the end of life,the huge ever-growing pile of plastic waste(PW)causes serious concerns for our environment,including agricultural farmlands,groundwater quality,marine and land ecosystems,food toxicity and human health hazards.Lack of proper infrastructure,financial backup,and technological advancement turn this hazardous waste plastic management into a serious threat to developing countries,especially for Bangladesh.A comprehensive review of PW generation and its consequences on environment in both global and Bangladesh contexts is presented.The dispersion routes of PW from different sources in different forms(microplastic,macroplastic,nanoplastic)and its adverse effect on agriculture,marine life and terrestrial ecosystems are illustrated in this work.The key challenges to mitigate PW pollution and tackle down the climate change issue is discussed in this work.Moreover,way forward toward the design and implementation of proper PW management strategies are highlighted in this study.展开更多
We present lipid biomarker records of two cores （ZYI and ZY3） from the central South Yellow Sea mud area to investigate the changes in sources and transport processes of the sedimentary organic matter （OM） through...We present lipid biomarker records of two cores （ZYI and ZY3） from the central South Yellow Sea mud area to investigate the changes in sources and transport processes of the sedimentary organic matter （OM） throughout the Holocene. Based on the analysis of marine biomarker content （EPB （Phytoplankton Biomarker, total content of brassicasterol, dinosterol and C37-alkenones） and crenarchaeol）, and terrestrial biomarkers （En-alkanols and brGDGTs） as well as TMBR＇ and BIT index values, the marine organic matter （MOM） and terrestrial organic matter （TOM） deposition history was reconstructed. Changes in TOM and MOM were related to variations in land vegetation density and marine productivity, as well as transport processes dominated by the oceanic circulation system. The marine biomarker contents from the South Yellow Sea have generally in- creased throughout the Holocene, indicating that the increased MOM contents were mainly controlled by the strengthening of the circulation system. The terrestrial biomarkers, on the other hand, were more variable, indicating more complex influence of TOM burial in the Yellow Sea. During the Early Holocene （7200-6000 cal yr BP）, the moderate TOM input revealed by the terrestrial proxy records may result from abundant land source supply by strong river transport despite the lack of transport via circulation system. The Mid-Holocene （6000-3000 cal yr BP） was characterized by decreased terrestrial biomarker contents. The balance between the decrease in land source supply and increase of transportation by the current system of the TOM resulted in the lower but stable contents of TOM. During the Late Holocene （3000 cal yr BP to present）, the TOM deposition in the South Yellow Sea increased as the current system was further enhanced and thus transported more TOM to the central South Yellow Sea, although the land supply of TOM was further reduced.展开更多
Cretaceous strata of Pakistan yielded many significant fossils of terrestrial ecosystems like poripuch (all caudals are procoelous) lithostrotian titanosaurian sauropods, abelisauroids theropods, mesoeucrocodiles, pte...Cretaceous strata of Pakistan yielded many significant fossils of terrestrial ecosystems like poripuch (all caudals are procoelous) lithostrotian titanosaurian sauropods, abelisauroids theropods, mesoeucrocodiles, pterosaurs and gymnosperm stem wood. Both marine and non-marine strata well exposed through the Cretaceous, Jurassic-Cretaceous and Cretaceous-Paleogene boundaries found in Pakistan especially in Indus Basin. Indus Basin represents strata from Precambrian to Recent. Here a glimpse of Cretaceous Stratigraphy of Pakistan is being presented.展开更多
Although it has long been recognized that the oceans are abundant in various kindsof resources,only in recent years it is discovered that marine medicines have their uniqueadvantages and,with the development of scienc...Although it has long been recognized that the oceans are abundant in various kindsof resources,only in recent years it is discovered that marine medicines have their uniqueadvantages and,with the development of science and technology,they are bound to havebroad application prospects.展开更多
基金Supported by the National Natural Science Foundation of China(42375041)Joint Research Project for Meteorological Capacity Improvement(22NLTSZ002)China Meteorological Administration Youth Innovation Group(CMA2024QN06).
文摘Extreme heat events over both lands and oceans have increased in frequency and intensity,and exerted profound impacts on human and natural systems.More impactful is their concurrence,leading to larger losses in health,food,economy,and ecosystem,but receiving far less attention.Understanding the mechanism for such marine–terrestrial compound heatwaves is a prerequisite to prediction and disaster prevention.Based on air particle trajectory analysis,we identified 87 compound heatwaves in China and adjacent oceans in summers of 1982–2021,with the connection between marine and terrestrial heatwaves particularly prominent between the oceans to Northeast Philippines and the lands in South/Southeast China.Through composite and case analysis,it is found that the connection is established by simultaneous governance of(i)the western Pacific subtropical high(WPSH),(ii)a dipole circulation pattern constituted by the WPSH and weak tropical cyclones(TCs),or(iii)strong and closer-to-coast TCs,each of which causes anomalously strong descending motion,increased incoming solar radiation,and strengthened adiabatic heating on lands.The marine heatwaves act to supply more moisture through enhanced evaporation,and/or intensify TCs that pass the region.The air particle tracking shows that these moister air masses are then advected by the WPSH and/or TCs to South/Southeast China,converting the adiabatic heating-caused dry heatwaves there into humid ones and thus adding to the heat stress.These diagnoses provide new insight into the mechanistic understanding and forecast precursors for terrestrial heatwaves,through the lens of compound events.
文摘The measuring of the integration degree between marine and terrestrial industries is a crucial part in formulating strategies of industrial adjustment and industrial development for coastal regions. Taking the Blue Economic Zone of Shandong Peninsula as an example, this paper conducted grey correlation analysis on the correlation between the three industrial sectors in marine and terrestrial areas, as well as on the internal interaction between main industries in marine and terrestrial areas. In the end, the paper puts forward related suggestions on the integrated development of marine and terrestrial industries in the Blue Economic Zone of the Shandong Peninsula.
文摘People have long been curious about the history of life on the earth-how many different species have existed, when they first occurred, how they evolved over geologic time, and how they reacted to major environmental crises.
文摘Plastic is considered one of the most indispensable commodities in our daily life.At the end of life,the huge ever-growing pile of plastic waste(PW)causes serious concerns for our environment,including agricultural farmlands,groundwater quality,marine and land ecosystems,food toxicity and human health hazards.Lack of proper infrastructure,financial backup,and technological advancement turn this hazardous waste plastic management into a serious threat to developing countries,especially for Bangladesh.A comprehensive review of PW generation and its consequences on environment in both global and Bangladesh contexts is presented.The dispersion routes of PW from different sources in different forms(microplastic,macroplastic,nanoplastic)and its adverse effect on agriculture,marine life and terrestrial ecosystems are illustrated in this work.The key challenges to mitigate PW pollution and tackle down the climate change issue is discussed in this work.Moreover,way forward toward the design and implementation of proper PW management strategies are highlighted in this study.
基金supported by the National Natural Science Foundation of China(Grant No.41221004)the Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology of the Ministry of Land and Resources(Grant No.MRE201301)+1 种基金the National Basic Research Program of China(Grant No.2010CB428901)the“111”Project(Grant No.B13030)
文摘We present lipid biomarker records of two cores （ZYI and ZY3） from the central South Yellow Sea mud area to investigate the changes in sources and transport processes of the sedimentary organic matter （OM） throughout the Holocene. Based on the analysis of marine biomarker content （EPB （Phytoplankton Biomarker, total content of brassicasterol, dinosterol and C37-alkenones） and crenarchaeol）, and terrestrial biomarkers （En-alkanols and brGDGTs） as well as TMBR＇ and BIT index values, the marine organic matter （MOM） and terrestrial organic matter （TOM） deposition history was reconstructed. Changes in TOM and MOM were related to variations in land vegetation density and marine productivity, as well as transport processes dominated by the oceanic circulation system. The marine biomarker contents from the South Yellow Sea have generally in- creased throughout the Holocene, indicating that the increased MOM contents were mainly controlled by the strengthening of the circulation system. The terrestrial biomarkers, on the other hand, were more variable, indicating more complex influence of TOM burial in the Yellow Sea. During the Early Holocene （7200-6000 cal yr BP）, the moderate TOM input revealed by the terrestrial proxy records may result from abundant land source supply by strong river transport despite the lack of transport via circulation system. The Mid-Holocene （6000-3000 cal yr BP） was characterized by decreased terrestrial biomarker contents. The balance between the decrease in land source supply and increase of transportation by the current system of the TOM resulted in the lower but stable contents of TOM. During the Late Holocene （3000 cal yr BP to present）, the TOM deposition in the South Yellow Sea increased as the current system was further enhanced and thus transported more TOM to the central South Yellow Sea, although the land supply of TOM was further reduced.
文摘Cretaceous strata of Pakistan yielded many significant fossils of terrestrial ecosystems like poripuch (all caudals are procoelous) lithostrotian titanosaurian sauropods, abelisauroids theropods, mesoeucrocodiles, pterosaurs and gymnosperm stem wood. Both marine and non-marine strata well exposed through the Cretaceous, Jurassic-Cretaceous and Cretaceous-Paleogene boundaries found in Pakistan especially in Indus Basin. Indus Basin represents strata from Precambrian to Recent. Here a glimpse of Cretaceous Stratigraphy of Pakistan is being presented.
文摘Although it has long been recognized that the oceans are abundant in various kindsof resources,only in recent years it is discovered that marine medicines have their uniqueadvantages and,with the development of science and technology,they are bound to havebroad application prospects.
