| 单词 | nutrient cycle |
| 释义 | > as lemmasnutrient cycle nutrient cycle n. Ecology the transfer of elements essential for the nutrition of living organisms, from the organisms, to their physical surroundings, and back again, in a continuous cycle. ΚΠ 1947 R. F. Daubenmire Plants & Environment ii. 29 With repeated cropping the productivity wanes..because organic matter is destroyed and the nutrient cycle is interrupted by the removal of minerals from the habitat with each crop. 1973 P. A. Colinvaux Introd. Ecol. xiv. 197 When, at the death of trees, the nutrients find their way to the soil water they are quickly recovered by an efficient root network, thus completing a very effective nutrient cycle. 1995 Fertilizer Res. 43 21 Past nutrient removals in timber, branches, leaves and even forest floor litter have interrupted the nutrient cycle. < as lemmas |
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