| 单词 | basal area |
| 释义 | > as lemmasbasal area basal area n. (a) the area situated at or forming the base; spec. in Ecology (see quot. 1962); (b) Forestry the area of the cross-section of a tree at a height of 4·5 feet above the ground, or the sum of such areas. ΘΚΠ the world > space > relative position > low position > [noun] > condition of being placed under > that which lies under > base on which a thing rests > surface or area floor1556 basal area1610 bedding1611 bed1633 plan1723 floor area1887 the world > food and drink > farming > forestry or arboriculture > lumbering > [noun] > tree-crop > measurements of standing timber stumpage1854 scale1877 increment1889 taper1893 basal area1895 form factor1895 cruise1911 the world > life > biology > balance of nature > environment or habitat > [noun] > portion of subregion1830 province1847 realm1854 substrate1876 quadrat1904 transect1905 biotope1909 basal cover1923 microhabitat1931 basal area1938 tetrad1963 1610 W. Folkingham Feudigraphia ii. viii. 62 Multiply the Basall Area by 6. 1895 W. Schlich Man. Forestry iii. i. 46 The sample tree should show a basal area which corresponds exactly to the mean section of the class. 1938 J. R. Carpenter Ecol. Gloss. 39 Basal area, (1)..The sum of the basal areas of trees in a forest stand is the basal area of the stand. (2)..Ground cover, basal cover. 1962 H. Hanson Dict. Ecol. 43 Basal Area..the surface of the soil actually covered or occupied by a plant, especially the basal part, as compared to the full spread of the herbage. < as lemmas |
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