Nghĩa của từ humic matter bằng Tiếng Việt
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Đặt câu có từ "humic matter"
1. The cellulose-DEN powder is insensitive to abundant substances like alkali and alkaline earth ions, and humic matter.
2. Evidently three distinct stages of geochemical and trophic development are represented, the sequence of stages being tentatively generalized as follows for reservoirs of this region: (1) soon after impoundment, rapid leaching of nutrients from submerged land causes a brief rise in productivity and aberrantly high levels of dissolved low molecular weight phosphorus and nitrogen in the backwaters; (2) subsequently, a "pulse" of soil humic matter released more gradually into the backwaters depresses productivity by fixation of minor elements such as iron, even if the dissolved phosphorus levels are high; (3) finally, a steady state is restored when this anomalous accumulation of humic matter is removed from the water column by sedimentation or flushing, allowing productivity to return to higher levels.