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生态学报 1991
THE RESEARCH ON THE POPULATION SPATIAL PATTERNS OF THE PLAETAU ZOKOR (MYOSPALAX BAILEYI) AND THE PLATEAU PIKA (OCHOTONA CURZONIAE) IN THE ALPINE MEADOW ECOSYSTEM
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Abstract:
This research was carried out in Qinghai province from 1983 to 1985. The main results are as follows.1. The spatial patterns of the zokor and the pika fit the negative binomial and the truncated negative binomial distribution . 2. The assembling intensity of the zokor is higher than the pika. 3. The assembling area of the zokor is 0.75 ha in meadow and 1 ha in shrub, and that of the pika is 0.5 ha. 4. The spatial pattern of the pika shows its random distribution but the zokor's patten still shows the assembling distibution in low population density. The assembling intensity of the zokor and the pika is decreased in low density population following a heavy snow. 5. The spatial patterns of the zokor and the pika trend to positive correlation in the samples of low density but negative correlation in the samples of high density.