土壤生态系统中水分和养分的丰度和有效性决定土壤的肥力。
The abundance and availability of water and nutrients in a soil ecosystem determine its fertility.
指出，防治重金属污染，对保护土壤生态系统具有重大意义。
It points out that it is of great importance for protecting soil ecosystem to prevent and cure pollution of heavy metals.
旅游活动已对张家界国家森林公园土壤生态系统产生了较大影响。
It was concluded that tourism activities significantly affected the soil ecosystem in the Zhangjiajie National Forest Park.
本文应用灰色系统理论—灰色关联识别原理和方法，探讨干旱区土壤生态系统的主导因子识别。
The leading factors of soil ecosystem in arid area are discussed based an the application of the principle and method of grey relational gradation, the important part of grey system theory.
土壤微生物在土壤生态系统中的作用重大，然而退化生态系统有关土壤微生物的研究相对缺乏。
Soil microorganisms play a major role to soil ecosystem, however littele information is available about soil microorganisms of degenerated ecosystem.
土壤环境容量是输入土壤生态系统污染物的最大允许负荷，此时该系统仍保持正常的结构和功能。
Soil environmental capacity is the maximum tolerable amount of pollutants inputed into a soil ecosystem, which still maintains its normal structure and functions.
AM真菌是广泛存在于土壤生态系统中的一类有益微生物，能与90%以上的维管植物形成共生体。
AM fungi is a kind useful microorganism that distributes in the soil system extensively; it can form symbiosis with host plant above 90%.
本文通过阐述重金属污染对土壤生物及土壤酶活性的影响，揭示了重金属污染对土壤生态系统的危害。
This article expounds the effects of pollution of heavy metals on soil organisms and soil enzyme activities, discovers the harm of pollution of heavy metals on soil ecosystem.
土壤酶是一类稳定的蛋白质，参与了土壤中的生物化学反应，对土壤生态系统中物质的循环转化有重要的作用。
Soil enzymes are stable proteins that catalyze biochemical reactions and play important roles in circulation and conversion of materials in soil.
因此，有关抗生素在土壤中的环境行为及其与土壤生态系统的相互作用己成为土壤学与环境科学研究的重要课题。
Therefore, the behavior of antibiotics in soil environment and their interaction with soil ecosystem has become an important research topic of soil science.
并探讨了森林枯枝落叶层在森林土壤生态系统中对水源涵养、养分供应、促进生物活动强度和土壤发育等方面的功能。
Finally, the function of forest floor on wate conservation, nutrient supply, promoting biological respiratory intensity and soil development are discussed.
但是即便这种方法也面临着改变土壤酸性或海洋生态系统的风险，除非采取处理的预防措施。
But even this method runs the risk of altering the acidity of soil or Marine ecosystems unless precautions are taken with disposal.
重建红树林生态系统的繁荣需要农民们修复已酸化、密实的土壤，那么虾厂就一文不值了。
If farmers were required to restore the farms with their acidified, compacted soil so that the mangrove ecosystem could thrive again, shrimp farming wouldn't be worthwhile.
我们呼吸的空气，饮用的水，生长食物的土壤，是全球脆弱生态系统的一部分，这一系统所承受的人类活动的压力日益加大。
The air we breathe, the water we drink and the soil that grows our food are part of a delicate global ecosystem that is increasingly under pressure from human activities.
它们可以无需任何处理就放进当地生态系统中，改善当地土壤质量。
They can actually put this in their natural ecosystem without any processing, and it's going to improve the local soil.
城市污泥对退化森林生态系统土壤的人工熟化研究。
Artifical improvement of soil fertility in a regraded forest ecosystem by using municipal sewage sludge.
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.
森林土壤氮素转化与循环在森林生态系统功能中占有极其重要的意义。
Nitrogen transformation and cycling in forest soils are of signification importance to the function of forest ecosystems.
随着植被的逆向演替，土壤养分减少，导致低丘红壤生态系统恶化。
With the degeneration of vegetation, decreasing of soil nutrients results in regressive successions in red earth ecosystem.
土壤碳是陆地生态系统碳循环的重要组成部分。
Soil carbon is an important part of terrestrial ecosystem carbon cycle.
土壤是陆地生态系统中最大的碳库。
Soils are the largest carbon reservoir in terrestrial ecosystems.
通过田间试验对湿地稻-鸭复合生态系统的稻田土壤质量进行了研究。
The quality of paddy soils in a wetland rice-duck complex ecosystem was studied by plot experiments.
土壤过程是陆地生态系统过程的重要组成部分，对全球变化有响应和反馈作用。
Soil process is one of the key processes of terrestrial ecosystem, which responds and feeds back to the global change.
土壤过程是陆地生态系统过程的重要组成部分，对全球变化有响应和反馈作用。
Soil process is one of the key processes of terrestrial ecosystem, which responds and feeds back to the global change.
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