养分循环是生态系统最基本的功能之一。
Nutrients cycle is one of the most essential functions in an ecosystem.
林下植被和死地被物层在系统养分循环中具有重要作用。
The understory vegetation and dead litter play a great role in the nutrient cycling of the ecosystem.
土壤有机质和养分循环与优化管理对农业和环境具有重要意义。
Optimum management of the cycle of soil organic matter and nutrients has important roles for developing sustainable agriculture and promoting environmental safety.
本文从群体水平上研究了蒙古栎林生态系统中的水分循环与养分循环的关系。
The relation between water cycling and nutrient cycling was studied from, community level in the oak forest.
改善农田养分循环的途径是建设基本农田、增施有机肥料和调整种植结构等。
Therefore, the way of improving nutrient circulation is to build farmland with high productivity, apply more organic fertilizer and readjust the structure of plant.
通过稳定土壤，减少水蚀和风蚀并维持土壤养分循环，林木覆盖能够防止土地退化和荒漠化。
Forests and tree cover combat land degradation and desertification by stabilizing soils, reducing water and wind erosion and maintaining nutrient cycling in soils.
土壤生物和酶活性在改善土壤结构、养分循环、有机质分解和保持中起重要作用。
Soil organisms as well as enzyme activities perform important functions in soil, including structure improvement, nutrient cycling, and organic matter decomposition and retention.
土壤凋落物的分解不仅是生态系统养分循环的重要环节，也是生态系统碳释放源之一。
The decomposition of litters is important to the nutrient cycling of the ecosystems and also is the one of the carbon sources of the ecosystems.
河流中叶片凋落物在春夏季节的快速分解对底栖生物群落和下游养分循环有重要作用。
Generally, fast breakdown rates of leaf litter in the Xiangxi River indicated that riparian leaf litter played a significant role in the nutrient cycling and benthic communities.
凋落物分解是森林生态系统养分循环中的重要过程，对土壤有机质的形成和养分释放有重要意义。
Forest litters decomposition was an important process of nutrient cycling in forest ecosystems, and played a central role in soil organic matter formation and nutrients release.
土壤动物是森林生态系统的重要组成成分，在系统养分循环、能量流动中具有不可替代的重要地位。
As an important integrant of forest ecological system, soil animals are indispensable to its nutrient cycling and energy flowing.
土壤酶活性以及微生物数量的提高通过促进养分循环过程间接对果实营养成分和产量产生积极的影响。
The increase of soil enzyme activity and microorganism amount indirectly bring positive effects on fruit quality and yield by promoting nutrition circulation courses.
湿地土壤中的活性有机碳可以为土壤微生物提供更多的有效能量，从而加快湿地生态系统养分循环过程。
Soil active carbon provides more energy for soil microbe and the process of nutrients cycling in freshwater marsh ecosystem is accelerated.
我们必须确保我们的悠久遗产不至于把这些小东西彻底毁掉，因为它们向人类提供了巨大的好处，如养分循环和气候调节。
We need to ensure that our enduring legacy is not to wipe out the small things that provide us with great benefits such as nutrient recycling and climate regulation.
毛榛子和溲疏是该林分灌木中的优势或亚优势种，在养分循环中起着重要的或突出的作用，是重点保护的灌木种。
Corylus mandshurica and Deutzia amurensis are dominant or sub-dominant shrub species in the forest and have an evident effect on nutrient cyclings, and should be protected.
畜牧系统中N流动与平衡的研究是畜牧业进行养分资源管理的基础，而参数的确定又是研究养分循环与平衡的基础工作。
The study of nitrogen balance in stock farming system is the basis of nutrient management in animal husbandry production, and the determination of N cycling parameters is the foundation of this study.
研究了在养分循环再利用的基础上采取不同施肥制度下作物养分移出量，并结合施肥量计算出土壤中N、P、K养分收支。
The quantity of crop nutrients transferred from the system, and the nutrient budget of N, P and K in soil were studied.
最近一二十年来，原绿藻和微食物网的重大发现已使人们充分认识到微型浮游生物在水域生态系统的养分循环和能量流动中的重要意义，也为微型浮游生物的研究提出了新的方向。
In recent 10~20 years, the discovery of prochlorophyte and microbial food web has revealed the significance of nano\|plankton in nutrient cycle and energy flow of aquatic ecosystem.
在现代农业中，土壤的矿物损耗是一个主要的问题，因为收割农作物会中断养分的循环，使其无法重新回到土壤中。
In modern agriculture, mineral depletion of soils is a major concern, since harvesting crops interrupts the recycling of nutrients back to the soil.
由于养分的重要性和贫乏性，营养循环是我们在这门课中会讲到的最重要的生态系统过程之一。
Because of the importance of nutrients and their scarcity, nutrient recycling is one of the most significant eco-system processes that we'll cover in this course.
“海洋生态系统是由多种资源孕育而非单一依靠冰川，”胡德说，“例如，洋面上升是一种自然循环现象，富含养分的冷水从海底升起，滋养了海面的生物。 但是，由于冰川的融化而导致大量淡水突如其来涌入海洋，这可能会破坏洋流的正常循环。”
But a sudden influx of fresh water from melting ice could also disrupt the ocean currents that drive upwelling.
设备内的水管使气泡穿过设备，为自养生物提供养分，同时使污水循环，为细菌提供养分。
Tubes within each device pump air bubbles through to support the autotrophs.This also circulates the sewage to feed the bacteria.
设备内的水管使气泡穿过设备，为自养生物提供养分，同时使污水循环，为细菌提供养分。
Tubes within each device pump air bubbles through to support the autotrophs. This also circulates the sewage to feed the bacteria.
循环个数与树叶的强韧度和寿命有关，因为在树叶受损的情况下，循环为重新输入养分提供了路径。
The number of loops shows how resilient a leaf is and is related to how long a leaf lives, since loops provide ways to re-route supplies in the case a leaf gets damaged.
血管壁增厚及血液循环变得缓慢，并慢慢使重要器官不能得到足够的氧气和养分造成的各种疾病，并最终死亡。
The blood thickens and blood circulation becomes sluggish, and slowly vital organs cannot receive sufficient oxygen and nutrients causing all kinds of diseases and eventual death.
休克是一个复杂的综合征与运送氧气和养分到周围减少的循环功能障碍相关，并最终累及中枢器官。
Shock is a complex syndrome of circulatory dysfunction associated with reduced oxygen and nutrient delivery to peripheral and ultimately to central organs.
将气体充入大气中循环利用矿物质和养分。
Filling the gas into the atmosphere, recycling minerals and nutrients.
结果表明，不同种植密度下林分的营养循环表现出了一定的差异性，而养分的利用效率则一样。
The results showed: the nutrient cycling was different among the different planting density of C. cajan, but the efficiency of nutrient utilization was same among the different planting densities .
结果表明，不同种植密度下林分的营养循环表现出了一定的差异性，而养分的利用效率则一样。
The results showed: the nutrient cycling was different among the different planting density of C. cajan, but the efficiency of nutrient utilization was same among the different planting densities .
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