Both crossover operator and selection schemes are improved so that every population individual inherits more of own genetic material to increase the diversity of population individual and to obtain overall optimized results for selection.

In this algorithm,the population individual is expressed through the hierarchical real-number gone coding,thus the quality and efficiency for solving the model of complicated structure can be increased effectively. As an example,2-dimensions manipulator is designed to show its superiority.

The average genetic distance, 0. 3056 (0.0951—0.4963) , among individuals in Mudong population was the highest and that of population Wanzhou, 0. 1401 (0.0614—0.2225), was the lowest.

The results indicated that the value of correlation dimension of pattern of natural P. taiwanensis populations ranged from 1.077 to 1.563 and the order was Q2>Q8>Q5>Q3>Q1>Q7>Q6>Q4. On the whole, degree of individual spatial correlation of natural P. taiwanensis population in almost pure forest in Pingnan and in mixed forest in Shouning had no significant disparity.

Finally, within-population individual differences were observed because of local plant heterogeneity in PAs.

This paper is the second of a series of studies on the intraspecific variation offecundity of the Large Yellow Croaker, and is concerned with the peculiarities ofthe individual fecundity of the spawning population of Kuanching-yang, Fukian. The material for the present study was collected during the period from March-June, 1959 in the spawning ground. Based upon 173 samples studied, the results aresummarized as follows: 1. The individual absolute fecundity (r) varied between 39.9 and 900.6(×1000) (average, 256....

This paper is the second of a series of studies on the intraspecific variation offecundity of the Large Yellow Croaker, and is concerned with the peculiarities ofthe individual fecundity of the spawning population of Kuanching-yang, Fukian. The material for the present study was collected during the period from March-June, 1959 in the spawning ground. Based upon 173 samples studied, the results aresummarized as follows: 1. The individual absolute fecundity (r) varied between 39.9 and 900.6(×1000) (average, 256. 8 ); the individual relative fecundity r/l varied between1, 410 and 18, 610 (eggs/cm) (average, 7,540) and r/q between 125 and 907(eggs/g)(average, 548). The variability is shown diagrammatically as scatter diagrams offecundity and standard-length, body-weight, age, growth coefficient of condition,standard-length×body-weight (l·q) and (l·q)~(1/2) in Figs. 1-3, 8-11. 2. The dynamical peculiarities of individual fecundity (r and r/l) of theKuanching-yang spawning population, like the Taichu-yang spawning population,increase with increase in weight, length and age. The relations of individual absolutefecundity (r) and individual relative fecundity r/l to length and age are curved,but differently sloped, and to weight are linear. The individual relative fecundity r/qdoes not increase or decrease markedly with length, weight and age. 3. The relations of individual fecundity (r,r/l, r/q) to coeffecient of condition(K =W/L~3 × 100) and to relative condition coefficient (K=W/W ×100) are not quiteobvious, i .e. ) they do not increase or decrease regularly with K and K. 4. The fecundity coefficient (C=(l·q)/r) varied between 0.22 and 1.912,mostly between 0.42 and 0.82.The individual absolute fecundity (r) was found to be related to "l·q" and "(l·q)~(1/2)" linearly, it was like the relation between individualfecundity (r, r/l) and body-weight. Thus the fecundity coefficient is still a goodindex for determining the peculiarity of individual fecundity of fish. 5. The individual fecundity (r, r/l) not only increases with increase of lengthand weight, but also relates to peculiarity of sexual maturity, i .e. , the individualsof first maturity have a lower mean individual fecundity than individuals of repeatedsexual maturity. 6. The fast-growing individuals have a higher mean individual fecundity (r,r/l) than slow-growing individuals in the same age-group. Therefore growth is oneof the main influential factors.

In this paper, authors have analysed distribution pattern of individuals of 14 dominant plant populations in Aneurolepidium chinensis steppe community by interpolation method of 2 dimensional net function.According to data obtained by net method, the values of net point are computed by interpolation formula. The results of computation are output by the computer, the computer prints and outputs the distribution pattern diagram of individuals of each species population.The distribution pattern diagrams offer following...

In this paper, authors have analysed distribution pattern of individuals of 14 dominant plant populations in Aneurolepidium chinensis steppe community by interpolation method of 2 dimensional net function.According to data obtained by net method, the values of net point are computed by interpolation formula. The results of computation are output by the computer, the computer prints and outputs the distribution pattern diagram of individuals of each species population.The distribution pattern diagrams offer following informations:1. The spatial distribution types of individuals of 14 plants population;2. The scales of 'clumps';3. The total area of 'clumps'.The diagrams of mosaic pattern of populations are able to reflect directly the relation of Spatial disposition among various populations and provide the type of mosaic.The problems involved in applying interpolation method and the size of sampling area for the studies of distribution pattern of populational individuals are also discussed.

In this paper, a new method for the study of the spatial pattern of population in plant communities is presented. In comparison with the method of contiguous grid quadrats which was recommended by Greig-Smith (1952 and 1964), the new method has the following advantages.1. The results obtained by use of this new method are of higher accuracy. In addition, the computer is able to print and output the scale and shape of clumps of plant population,the distribution pattern of clumps in the sampling plot, the total...

In this paper, a new method for the study of the spatial pattern of population in plant communities is presented. In comparison with the method of contiguous grid quadrats which was recommended by Greig-Smith (1952 and 1964), the new method has the following advantages.1. The results obtained by use of this new method are of higher accuracy. In addition, the computer is able to print and output the scale and shape of clumps of plant population,the distribution pattern of clumps in the sampling plot, the total area of clumps of each kind of plant in the sampling plot, and the total amount of each kind of plant, etc..2. The new method is applicable for the study of the pattern of natural plant communities.In this paper, the computational formulas used in data processing and the mathematical principle for computational formulas are offered, and the definition of the outputting boundaries (rounding off boundaries) and its mathematical principle are also recommended.Besides, this paper elucidates the analysis of computational results and the procedure of processing random mosaic geometrical 'clumps' and sampling plots of the simulated grassland.