The area of natural lakes has continuously shrunk while the number of lakes during the first period of water-basin drying increased owing to the fragmentation of large lakes (table 3.1).
(The area of natural lakes; has continuously shrunk; T:while the number of lakes during the first period of water-basin drying increased owing to the fragmentation of large lakes (table 3.1) (the number of lakes during the first period of water-basin drying; increased; owing to the fragmentation of large lakes (table 3.1)
The area of natural lakes the number of lakes during the first period of water-basin drying
has continuously shrunk increased
T:while the number of lakes during the first period of water-basin drying increased owing to the fragmentation of large lakes (table 3.1
owing to the fragmentation of large lakes (table 3.1