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modeling of the soil nitrogen cycle 土壤中氮循环模拟
Soil nitrogen cycling 土壤氮循环
The available literature suggests that no consistent pattern exists on the impacts of exotic plant invasions on soil microbes, soil animals, soil carbon cycling and nitrogen cycling. 已有的研究表明, 植物入侵对土壤生物多样性及相关生态系统过程的影响均存在不一致的格局, 影响机制也是复杂多样的。
Effects of long-term plant Medicago sativa Linn. on soil nitrogen nutrient. 长期种植苜蓿对土壤氮素营养的作用
Carbon and nitrogen cycling characteristics of dry farmland ecosystem on Loess Plateau. 黄土高原旱塬农田生态系统碳氮循环特征。
soil nitrogen cycle 土壤氮循环
Nutrient-rich, oxygen-poor waters like these support a frenzy of nitrogen cycling, in which certain bacteria use nitrates as an energy source. 富营养化的，缺氧的海水给氮元素的循环提供了一个新的场所，特别的细菌会利用这些硝酸盐作为一种能量的来源。
Depletion of soil nitrogen frequently leads to reduced concentrations of soluble amino and amides. 土壤氮素的减少常常导致可溶性氨基酸和酰胺浓度的降低。
soil carbon and nitrogen cycling 土壤碳和氮循环
Biological nitrogen fixation (BNF) is strongly associated with global nitrogen cycling and global changes due to its effects on release of greenhouse gas. 生物固氮对全球生态系统氮素循环和全球变化有着重要影响,但是由于测定方法的原因,过去对生物固氮,特别是多年生固氮植物的共生固氮的定量研究不足。
As an effective tracing method, stable nitrogen isotope is significant for studying the nitrogen cycling, especially for identifying source of nitrogen pollution. 稳定氮同位素作为一种有效的示踪手段，在研究氮循环特别是污染氮源的识别方面有重要意义。
Influence of temperature and moisture on soil nitrogen mineralization under two types of forest in Changbai Moun. Tain. 温度和湿度对长白山两种林型下土壤氮矿化的影响。
There was a positive correlation between the amounts of most soil microbe and soil nitrogen content. 土壤中大多数微生物数量与土壤氮素养分含量呈正相关。
These results indicate that the vegetation has stronger effect on soil nitrogen mineralization than soil types. 不同土地利用方式对土壤氮素矿化作用的影响强于不同土壤类型的影响。
The priming effect of nitrogen fertilizer on soil nitrogen was studied by using waterlogged incubation method. 摘要应用淹水培养方法，研究了铵态氮肥对土壤氮素的激发效应。
The soil nitrogen status is a function of the processes of nitrogen fixation, microbial decompostion, nitrificattion and denitrification. 土壤氮状况是一个固氮、微生物分解、硝酸化和脱氮过程的作用。
It is shown from the recent studies that organic nitrogen compounds are an important component of atmospheric nitrogen deposition and make a nonnegligible contribution to the global nitrogen cycling. 摘要近几年的研究表明，有机氮化合物是大气氮沉降的重要组成部分，对全球氮循环的贡献不可忽视。
The soil nitrogen status is a function of the processes of nitrogen fixation, microbial decomposition, nitrification and denitrification. 土壤氮状况是一个固氮、微生物分解、硝酸化和脱氮过程的作用。
Of all kinds of stable isotopes, 15N stable isotope technique plays a very important role in the research on nitrogen cycling in natural ecosystems and is still functioning efficiently now. 其中，稳定性同位素15N自然丰度法近年来在生态系统氮素循环研究中发挥了和正在发挥着极为重要的作用。
A technique consisting of aquatic plants,artificial fillers and immobilized nitrogen cycling bacteria(INCB)was adopted in situ purifying contaminated Xinyi River in fall and winter seasons. 采用水生植物、人工填料和固定化氮循环细菌技术(INCB),在秋冬季节对新沂河进行原位污染治理和生态修复实验。