This phyto-ecological study is on halophilic and salt-resistant vegetation of Oran region. The semiarid and sometimes arid climate has been defined and confirmed from a bioclimatic point of view. The pedological appro...This phyto-ecological study is on halophilic and salt-resistant vegetation of Oran region. The semiarid and sometimes arid climate has been defined and confirmed from a bioclimatic point of view. The pedological approach used shows a soil with sandy to silty-sandy texture, favoring regression of the vegetation and a halophilic vegetation set up. In this study, we analyze the floristic composition of the northern region of Hammam Boughrara using multiple floristic surveys conducted at three stations along the Tafna wadi. Dominated by Mediterranean and Saharo-Sindian elements, the relatively poor flora (88 species in total) is biologically characterized by a clear dominance of therophytes (>33%) and chamaephytes (>19%) to the detriment of phanerophytes.展开更多
Based upon the studies of solutional rates with environment from South China to North China over a range of about 30 。 latitude, this paper discusses some of the consequence with equations. The response model shows ...Based upon the studies of solutional rates with environment from South China to North China over a range of about 30 。 latitude, this paper discusses some of the consequence with equations. The response model shows that the precipitation is the most important factor influencing the rate of solutional denudation except the lithology, the relief etc., but it is an integrational action on the solution process; at the same time, temperature acts as a threshold in bringing the precipitation into play. These suggest that firstly, the solutional denudation process is a comprehensive response to the multiple factors; secondly, karst solution is a complex response process to the climate, and as an integrated exogenic process under the bioclimate.展开更多
This aim of this study is to highlight the critical view of human action and anthropic at the steppe zone of Tlemcen. Therefore, the current paper tends to tackle an analytical study of the dynamics of ecosystems in b...This aim of this study is to highlight the critical view of human action and anthropic at the steppe zone of Tlemcen. Therefore, the current paper tends to tackle an analytical study of the dynamics of ecosystems in both states: El-Gor in the south-east and El-Bouihi in the southern-west of Tlemcen. To carry out this study it was necessary to present the bioclimatic context based on weather data to perform bioclimatic syntheses (diagram ombrothermic, climagramme rainfall Emberger). By comparison between old and recent periods (1913-1938) and (1984-2009), respectively, for the region of El-Gor and (1913-1938) and (1970-1990) for the El station-Bouihi, there is a net decrease in rainfall and higher temperatures at the new periods, which means that the study areas are moving towards the driest floors. The interpretation of multidimensional treatments AFC (Factor Analysis of Correspondences) vegetation helps to determine the existing affinities between the different taxa. These biostatistical analyses help to highlight the different factors often responsible for the dynamic regressive most cases.展开更多
In this study, we have presented the climate and psamotherapy results at the Tavan Els Kidney Sanatorium of Mongolia. Patient variety for 10 years, since 2001-2011 there admitted 2000 patients in their remission of ch...In this study, we have presented the climate and psamotherapy results at the Tavan Els Kidney Sanatorium of Mongolia. Patient variety for 10 years, since 2001-2011 there admitted 2000 patients in their remission of chronic kidney illness. Contents of renal diseases diagnoses are as following: glomerulonephritis 52%, phylonephritis 35%, hydronephrosis 3%, obstructive renal disease 2%, chronic renal failure 7% and debatic nephropathy 1%. Sand sauna therapy is lain into heated sand baths for adults 8 to 20 mins and for child 7 to 15 mins long, and it is performed twice a day (morning and afternoon) for 2 or 3 weeks once a year. Particularly, the sanatorium offers a type of physiotherapy through the application of thermally warmed sand and a combination of healthy micro-bioclimate, purity of the natural environment, and the presence of fresh and healthy local foods to treat a wide range of medical conditions. The sand sauna treatment most likely affects the body by means of the sand’s high temperature and the presence of chemical elements those are biologically important. Its specific climate and geographical condition of sanatorium is unique by length of sunshine, wind and content, color of sand.展开更多
Climate change can aff ect fi sh individuals or schools,and consequently the fi sheries.Studying future changes of fi sh distribution and abundance helps the scientifi c management of fi sheries.The dynamic bioclimate...Climate change can aff ect fi sh individuals or schools,and consequently the fi sheries.Studying future changes of fi sh distribution and abundance helps the scientifi c management of fi sheries.The dynamic bioclimate envelope model(DBEM)was used to identify the“environmental preference profi les”of the studied species based on outputs from three Earth system models(ESMs).Changes in ocean conditions in climate change scenarios could be transformed by the model into those in relative abundance and distribution of species.Therefore,the distributional response of 17 demersal fi shes to climate change in the Yellow Sea could be projected from 1970 to 2060.Indices of latitudinal centroid(LC)and mean temperature of relative abundance(MTRA)were used to represent the results conducted by model.Results present that 17 demersal fi sh species in the Yellow Sea show a trend of anti-poleward shift under both low-emission scenario(RCP 2.6)and high-emission scenario(RCP 8.5)from 1970 to 2060,with the projected average LC in three ESMs shifting at a rate of-1.17±4.55 and-2.76±3.82 km/decade,respectively,which is contrary to the previous projecting studies of fi shes suggesting that fi shes tend to move toward higher latitudes under increased temperature scenarios.The Yellow Sea Cold Water Mass could be the major driver resulting in the shift,which shows a potential signifi cance to fi shery resources management and marine conservation,and provides a new perspective in fi sh migration under climate change.展开更多
The last decade was marked by the special interest in flora, biological characteristics, its adaptation to climate fluctuations and the influence of human activities. The steppe climate is generally characterized by i...The last decade was marked by the special interest in flora, biological characteristics, its adaptation to climate fluctuations and the influence of human activities. The steppe climate is generally characterized by its heterogeneity. The lower semi-arid： 300 mm to 400 mm per year; The arid higher： 200 mm to 300 mm per year; The arid lower： between 100 mm and 200 mm per year. Its wide analysis of a region is based on data provided by weather stations; a summary of the climate study area was analyzed with representative stations （Ain Sefra, El Aricha, Ras el-Ma, Saf-Saf）. This steppe is in various states of degradation, consisting of Stipa tenacissima, Artemisia herba alba, Biscutella didyma, Spartium junceum and Lepidium glastifolium, etc..展开更多
文摘This phyto-ecological study is on halophilic and salt-resistant vegetation of Oran region. The semiarid and sometimes arid climate has been defined and confirmed from a bioclimatic point of view. The pedological approach used shows a soil with sandy to silty-sandy texture, favoring regression of the vegetation and a halophilic vegetation set up. In this study, we analyze the floristic composition of the northern region of Hammam Boughrara using multiple floristic surveys conducted at three stations along the Tafna wadi. Dominated by Mediterranean and Saharo-Sindian elements, the relatively poor flora (88 species in total) is biologically characterized by a clear dominance of therophytes (>33%) and chamaephytes (>19%) to the detriment of phanerophytes.
文摘Based upon the studies of solutional rates with environment from South China to North China over a range of about 30 。 latitude, this paper discusses some of the consequence with equations. The response model shows that the precipitation is the most important factor influencing the rate of solutional denudation except the lithology, the relief etc., but it is an integrational action on the solution process; at the same time, temperature acts as a threshold in bringing the precipitation into play. These suggest that firstly, the solutional denudation process is a comprehensive response to the multiple factors; secondly, karst solution is a complex response process to the climate, and as an integrated exogenic process under the bioclimate.
文摘This aim of this study is to highlight the critical view of human action and anthropic at the steppe zone of Tlemcen. Therefore, the current paper tends to tackle an analytical study of the dynamics of ecosystems in both states: El-Gor in the south-east and El-Bouihi in the southern-west of Tlemcen. To carry out this study it was necessary to present the bioclimatic context based on weather data to perform bioclimatic syntheses (diagram ombrothermic, climagramme rainfall Emberger). By comparison between old and recent periods (1913-1938) and (1984-2009), respectively, for the region of El-Gor and (1913-1938) and (1970-1990) for the El station-Bouihi, there is a net decrease in rainfall and higher temperatures at the new periods, which means that the study areas are moving towards the driest floors. The interpretation of multidimensional treatments AFC (Factor Analysis of Correspondences) vegetation helps to determine the existing affinities between the different taxa. These biostatistical analyses help to highlight the different factors often responsible for the dynamic regressive most cases.
文摘In this study, we have presented the climate and psamotherapy results at the Tavan Els Kidney Sanatorium of Mongolia. Patient variety for 10 years, since 2001-2011 there admitted 2000 patients in their remission of chronic kidney illness. Contents of renal diseases diagnoses are as following: glomerulonephritis 52%, phylonephritis 35%, hydronephrosis 3%, obstructive renal disease 2%, chronic renal failure 7% and debatic nephropathy 1%. Sand sauna therapy is lain into heated sand baths for adults 8 to 20 mins and for child 7 to 15 mins long, and it is performed twice a day (morning and afternoon) for 2 or 3 weeks once a year. Particularly, the sanatorium offers a type of physiotherapy through the application of thermally warmed sand and a combination of healthy micro-bioclimate, purity of the natural environment, and the presence of fresh and healthy local foods to treat a wide range of medical conditions. The sand sauna treatment most likely affects the body by means of the sand’s high temperature and the presence of chemical elements those are biologically important. Its specific climate and geographical condition of sanatorium is unique by length of sunshine, wind and content, color of sand.
基金Supported by the National Natural Science Foundation of China(No.42176234)the Chinese Arctic and Antarctic Creative Program(No.JDXT2018-01)the Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)(No.GML2019ZD0402)。
文摘Climate change can aff ect fi sh individuals or schools,and consequently the fi sheries.Studying future changes of fi sh distribution and abundance helps the scientifi c management of fi sheries.The dynamic bioclimate envelope model(DBEM)was used to identify the“environmental preference profi les”of the studied species based on outputs from three Earth system models(ESMs).Changes in ocean conditions in climate change scenarios could be transformed by the model into those in relative abundance and distribution of species.Therefore,the distributional response of 17 demersal fi shes to climate change in the Yellow Sea could be projected from 1970 to 2060.Indices of latitudinal centroid(LC)and mean temperature of relative abundance(MTRA)were used to represent the results conducted by model.Results present that 17 demersal fi sh species in the Yellow Sea show a trend of anti-poleward shift under both low-emission scenario(RCP 2.6)and high-emission scenario(RCP 8.5)from 1970 to 2060,with the projected average LC in three ESMs shifting at a rate of-1.17±4.55 and-2.76±3.82 km/decade,respectively,which is contrary to the previous projecting studies of fi shes suggesting that fi shes tend to move toward higher latitudes under increased temperature scenarios.The Yellow Sea Cold Water Mass could be the major driver resulting in the shift,which shows a potential signifi cance to fi shery resources management and marine conservation,and provides a new perspective in fi sh migration under climate change.
文摘The last decade was marked by the special interest in flora, biological characteristics, its adaptation to climate fluctuations and the influence of human activities. The steppe climate is generally characterized by its heterogeneity. The lower semi-arid： 300 mm to 400 mm per year; The arid higher： 200 mm to 300 mm per year; The arid lower： between 100 mm and 200 mm per year. Its wide analysis of a region is based on data provided by weather stations; a summary of the climate study area was analyzed with representative stations （Ain Sefra, El Aricha, Ras el-Ma, Saf-Saf）. This steppe is in various states of degradation, consisting of Stipa tenacissima, Artemisia herba alba, Biscutella didyma, Spartium junceum and Lepidium glastifolium, etc..
