| 单词 | sustained yield |
| 释义 | > as lemmassustained yield sustained yield n. the quantity that can be periodically harvested from a crop or population without depleting it in the long term. ΘΚΠ the world > food and drink > farming > forestry or arboriculture > lumbering > [noun] > felling trees > sustained yield sustained yield1882 1860 Farmer's Mag. Sept. 191/2 If the mineral elements be applied in plenty to the soil, an abundant and sustained yield will be procured.] 1882 Jrnl. Forestry & Estate Managem. June 116 Forests..if they are correctly managed, should yield a regular annual rent, without any diminution of the growing crop. Some slight idea has also been given of the measures which are necessary in order that this sustained yield..may be ensured. 1918 E. H. F. Swain Austral. Stud. Amer. Forestry 100 The principle of the sustained yield is limitation of the periodic cut to the amount of wood accretion during the period. 1919 A. B. Recknagel & J. Bentley Forest Managem. xii. 124 By sustained yield is understood the yield or cut of timber from a forest which is managed in such a way as to permit the removal of an approximately equal volume of timber, annually or periodically, equal to the increment. 2011 Nelson (N.Z.) Mail (Nexis) 22 Feb. (News) 3 On average, stocks are fished at less pressure than would produce maximum sustained yield. < as lemmas |
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