查询词典 ecosystem

The worseness of the global environment makes people realize that the environmental pollution and the unballance of the natural ecosystem wil endanger mankinds survival and development, therefore, environmental protection is the common responsibility of the whole world.

全球性的环境恶化问题，促使人类认识到环境污染、自然生态系统失衡最终将会危及人类自身的生存和发展，保护环境是全世界共同的责任。

Remote sensing data were applied to monitor the wetland landscape pattern in the Yellow River mouth. Our results showed that wetland vegetation and ecosystem are located symmetrically along the Yellow River. Vegetation and landscape are zonated from the coast land-inward and, perpendicular to this, according to an increasing distance to the river course.

运用遥感手段监测黄河口湿地景观空间分布格局，结果表明黄河三角洲自然保护区湿地植被与生态系统沿黄河呈轴对称分布，距黄河由远而近的规律性分布与由海向内陆的分布一致，依次是潮滩、翅碱蓬、柽柳、芦苇、草地和林地。

The total number of zoobenthos in rice-duck farming ecosystem declines remarkably during the early stage of rice growth, but almost equals that of conventional paddy at late growth stage.

水稻生育前期，稻鸭共作使底栖动物的个体总数减少较大，后期与常规稻田差异较小。

EMAN operates 15 laboratories, testing lake, stream flow, water quality and wildlife toxicology samples, developing measures and indicators of ecosystem health and new technology solutions for eco-efficiency.

该网络有15个实验室，对湖泊河流、水质和野生生物毒理学样品进行检测，为生态系统健康制定措施、研发指示物，并为提高生态效益提供技术解决方案。

Therefore, doing research of the nutrient balance in the loessplateau has its practical signification. Using the long-term rotation and fertilization experiment that disposed in dry land on theloess plateau, the paper has studied nutrients in rainfall import to farmland ecosystem andAmmonia volatilization losses and nutrients disbursal of crop, also estimated the balance ofnutrients in farmland soil.

本文利用设在黄土高原旱地上的长期轮作与施肥试验，主要研究了黄土高原农田生态系统养分的降水带入、作物地上部分的氨挥发损失和作物的养分支出，并进行了 N、P、K 养分平衡评价。

The reduced relationship between forest floor C∶N and tree growth with increasing ecosystem Ncontent suggests the mineral soil N supply has the capacity to'buffer'immobilisation by coarsewoody debris and maintain adequate N availability.

随着生态系统中N含量的增加，森林地被物C∶N比与林木生长之间的相关性逐渐减弱，这个结果表明，土壤中N供给可以缓和立地上大木质碎片对N的固定作用，从而保证有足够的有效N供应。

This study is focused on fine root production and its contribution to the belowground C and N storage in forest ecosystem of the Changbai Mountain Reserve, Jilin Province of China.

本研究以我国东北长白山自然保护区内典型的森林生态系统为对象，对细根的生长和周转，及其对地下碳、氮贮量的贡献进行了系统的研究。

Root systems, especially fine roots, which link the above- and belowground ecosystem processes, have become one of the most concerned focuses in ecology research.

根系，尤其是细根，作为联系陆地生态系统地上与地下过程的的纽带，已成为生态学研究中最受关注的热点之一。

Grasslands play a significant role in terrestrial ecosystem carbon cycle due to large biomass stored belowground.

温带草地大部分生物量分布在地下，地下生物量在草地生态系统碳循环中起着重要作用。

This work was the preliminary work for further researching the especial forest ecosystem in this especial area.

为进一步揭研究这一地区特殊的森林生态系统动态、结构和功能积累必要的前期工作基础。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。