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20110523 NSRI
Russell
∆B=P YΔB:R;G:V:Y:
2.
1
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B
B
r
rIntrinsic rate of natural increase
B
, f(0)=0, f(K)=0 K B
B 22/K
Logistic
2
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Y
MSY (FMSY) XMSY)
1
MEY MSY
XMEY maximum economic yield
MSY
→
3
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Straw net14
A B
C D15 16
4
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(1886-1896)1.
2.
3.
18
20
0
2
4
6
8
10
12
14
1957 1962 1967 1972 1977 1982 1987 1992 1997 2002
5
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21
0
100
200
300
400
500 Age 60+Age 40-59Age 25-39Age 15-24
22
2007 4 27
5
2001 6 22
6
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(1949
:
or 10
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.
IV.
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≠
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ITQ
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Level 1:
Level 2:
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