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- W789312408 abstract "According to the investigation data of a 4 hm2 sample plot,the spatial distribution and species abundance of Pinus tabuliformis and Quercus liaotungensis at the altitude of 1 500-1 800 m in Lingkong Mountain were analyzed with the random distribution abundance model and aggregated distribution abundance model,the suitability of these two models to forecast the distribution abundance was evaluated by estimate goodness.The results show that,of 30 kinds of woody plants with different pixel values,the abundance of 20 kinds increases and their horizontal space expanses,other 10 kinds do not show the above-mentioned changes.With the expansion of pixel area,the abundance-area curve experiences great volatility when the area of abundance sequence is less than the last species;With the species on the fluctuations node excluded,the fluctuation in the curve tends to flatten.For the same species,the greater the pixel area,the larger the species occupied area.The evaluation results of estimate goodness show that the aggregated distribution abundance model is better than the random distribution abundance model to predict the relationship between abundance and area.Both the random distribution abudance model and the aggregated distribution abundance model are dependent on the values of m,that is,the occupied pixel number of species under the fixed pixel.For the species with a higher dispersion,the forecast results will be more accurate by using both two types of models,otherwise,the forest errors will be greater;When the total plot area is certain,the smaller the pixel area,the more accurate the forecast results." @default.
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- W789312408 date "2012-01-01" @default.
- W789312408 modified "2023-09-24" @default.
- W789312408 title "Relationship between abundance and area of Pinus tabulaeformis and Quercus liaotungensis Koidz in Lingkong Mountain Nature Reserve." @default.
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