Ecological and palaeoecological studies were carried out in a series of lakes in the Vestfold Hills (68°38′S, 78°06′E) on eastern Antarctic continent. Dynamics types of the lakes in environmental geomorpho...Ecological and palaeoecological studies were carried out in a series of lakes in the Vestfold Hills (68°38′S, 78°06′E) on eastern Antarctic continent. Dynamics types of the lakes in environmental geomorphology and physic chemistry, as well as features of biological community structures in different lakes were analyzed. Marine macro and micro fossils collected from the terraces and beaches surrounding these lakes and determined in 14 C radiocarbon ages to be the Late Pleistocene, were used as evidences to show the evolutionary processes of the lakes after sea level changes and transgressions since 18000 a B.P.. Basic modals of evolution for the lakes given in the paper could be regarded as not only explaining the history of environmental and ecological changes in VH lakes, and also reflecting of local environmental evolution in Antarctic region and global climate changes from past to present time.展开更多
An investigation has been made on the ecology of some saline lakes in the Vestfold Hills (60°38′S, 78°06′E), East Antarctica. The results indicate that changes of natural environment and physico chemical ...An investigation has been made on the ecology of some saline lakes in the Vestfold Hills (60°38′S, 78°06′E), East Antarctica. The results indicate that changes of natural environment and physico chemical factors, as well as the variation and evolution of biological species do occur in some lakes. This can be attributed to seasonal and local climate changes and geographic differences in this regions. These findings are believed to be indicative to the effects from the processes of globle climate change, ice sheet retreat, and isostatic uplift, are presently occuring, and a study of the chemistry and biology of these Antarctic lakes may be a significant means of monitoring effects of global climate change in the Antarctic.展开更多
Our sustainable environmental management must be based on adequate ecological concepts. The question arises: what concept is better to use for understanding and management of ecosystems? To look for an answer, we conc...Our sustainable environmental management must be based on adequate ecological concepts. The question arises: what concept is better to use for understanding and management of ecosystems? To look for an answer, we concentrate our attention on saline lakes. Every ecosystem has several alternative stable states and may demonstrate regime shifts, which are large, abrupt, persistent changes in the structure and function of a system. To understand the dynamics of ecosystems the Concept of Multiplicity of Ecosystem Alternative Stable States as a new ecological paradigm has been developed recently. The author analyzes the emerging paradigm using the case of saline lakes, and discusses how to base our adaptive environmental management on the developing paradigm. Different issues of development of the concept and its application to salinology as a scientific basis of an integrated management of a saline lake and its watershed are discussed. The concept may serve as one of the key theoretical elements of the scientific basis in sustainable environmental management.展开更多
Qaidam basin is an important part of National Key Development Area–Lanzhou-Xining Area,is a key region of resource development in Western Development,is a National Circular Economy Pilot Zone.The focus of
Ecological investigation has been done in some saline lakes in the Vestfold Hills (60°38’S, 78°06’ E), East Antarctica. The results show that changes of natural environment and physicalchemical factors, as...Ecological investigation has been done in some saline lakes in the Vestfold Hills (60°38’S, 78°06’ E), East Antarctica. The results show that changes of natural environment and physicalchemical factors, as well as the structure of biotic species and succession do occur in some lakes, due to seasonal and local climate changes and geographic variances in regions. These should be strong ecological proofs to explain that the processes of globle climate change and ice sheet retreating, and isostatic uplift raising, could be continueing in present time, and should be significant to the study on Antarctic and global changes.展开更多
文摘Ecological and palaeoecological studies were carried out in a series of lakes in the Vestfold Hills (68°38′S, 78°06′E) on eastern Antarctic continent. Dynamics types of the lakes in environmental geomorphology and physic chemistry, as well as features of biological community structures in different lakes were analyzed. Marine macro and micro fossils collected from the terraces and beaches surrounding these lakes and determined in 14 C radiocarbon ages to be the Late Pleistocene, were used as evidences to show the evolutionary processes of the lakes after sea level changes and transgressions since 18000 a B.P.. Basic modals of evolution for the lakes given in the paper could be regarded as not only explaining the history of environmental and ecological changes in VH lakes, and also reflecting of local environmental evolution in Antarctic region and global climate changes from past to present time.
文摘An investigation has been made on the ecology of some saline lakes in the Vestfold Hills (60°38′S, 78°06′E), East Antarctica. The results indicate that changes of natural environment and physico chemical factors, as well as the variation and evolution of biological species do occur in some lakes. This can be attributed to seasonal and local climate changes and geographic differences in this regions. These findings are believed to be indicative to the effects from the processes of globle climate change, ice sheet retreat, and isostatic uplift, are presently occuring, and a study of the chemistry and biology of these Antarctic lakes may be a significant means of monitoring effects of global climate change in the Antarctic.
文摘Our sustainable environmental management must be based on adequate ecological concepts. The question arises: what concept is better to use for understanding and management of ecosystems? To look for an answer, we concentrate our attention on saline lakes. Every ecosystem has several alternative stable states and may demonstrate regime shifts, which are large, abrupt, persistent changes in the structure and function of a system. To understand the dynamics of ecosystems the Concept of Multiplicity of Ecosystem Alternative Stable States as a new ecological paradigm has been developed recently. The author analyzes the emerging paradigm using the case of saline lakes, and discusses how to base our adaptive environmental management on the developing paradigm. Different issues of development of the concept and its application to salinology as a scientific basis of an integrated management of a saline lake and its watershed are discussed. The concept may serve as one of the key theoretical elements of the scientific basis in sustainable environmental management.
基金sponsored by China Academy of Engineering Major Consulting Project (No: 2012-ZD-14)
文摘Qaidam basin is an important part of National Key Development Area–Lanzhou-Xining Area,is a key region of resource development in Western Development,is a National Circular Economy Pilot Zone.The focus of
文摘Ecological investigation has been done in some saline lakes in the Vestfold Hills (60°38’S, 78°06’ E), East Antarctica. The results show that changes of natural environment and physicalchemical factors, as well as the structure of biotic species and succession do occur in some lakes, due to seasonal and local climate changes and geographic variances in regions. These should be strong ecological proofs to explain that the processes of globle climate change and ice sheet retreating, and isostatic uplift raising, could be continueing in present time, and should be significant to the study on Antarctic and global changes.
