水周期和氮循环之间的差异

Thekey differencebetween water cycle and nitrogen cycle is that水周期解释了固体，液体和气态相之间的水变化，而氮循环解释了氮的转化为各种化学形式。

Matter cycling explains how matter moves through the living and nonliving components of the ecosystem. It is explained by different geochemical cycles. Water cycle explains the cycling of water while carbon, nitrogen, sulfur, phosphorus and oxygen cycles explain their movements on earth. Each individual cycle shows the cyclic exchange of material between living organisms and their non-living environment.

内容

1.Overview and Key Difference
2.什么是水周期
3.What is Nitrogen Cycle
4.水周期和氮循环之间的相似性
5。并排比较 - 表格形式的水循环与氮循环
6。概括

什么是水周期?

Water cycle explains the changes or circulation of water between solid, liquid and gaseous phases. It also explains the physical movement of water through ecosystems. From the total volume of water on Earth, more than 97% is saltwater that is present in the oceans. A small percentage is groundwater while less than 1% is freshwater.

太阳是驱动水周期的主要能源。液态水通过过程转化为水蒸气（气态相）evaporation。然后，大气中的水蒸气凝结成云，然后随着雨水降落，通过precipitation。此外，液态水通过冷冻转化为固体冰。实心冰通过熔化转化回液态水。海水蒸发并像雨一样返回土地。然后从河流和地下水中，水从土地流到海洋中，流过地面（径流）或渗滤。Plants absorb water from their roots. From plants, water comes back to the atmosphere via蒸腾。

什么是氮循环？

氮循环是主要的生物地球化学周期之一。它描述了氮转化为不同形式及其通过生态系统的循环。氮主要作为氮气存在（n₂）在大气中。地球大气中的空气由约78％的氮组成。氮固定是将大气氮转化为土壤中硝酸盐的关键过程。它是通过固氮细菌完成的。他们使用称为氮酶的特殊酶来固定氮。此外，闪电可以将氮气转化为铵离子（NH₄⁺).

Ammonium ions are converted into nitrite (NO₂^–) by nitrifying bacteria. Furthermore, nitrites are converted into nitrates by nitrifying bacteria through a process called nitrification. Nitrate is the form of nitrogen that is usable by plant life. Plants uptake nitrates from the soil (assimilation). Animals eat plant materials which include nitrogen compounds. When plants and animals die, decomposers return nitrogen to the soil. Nitrate converts back into nitrogen gas in the atmosphere by a process called denitrification. It happens through the work of denitrifying bacteria.

水周期和氮循环之间有什么相似之处？

• 水周期和氮循环是两个生物地球化学周期。
• Both cycles represent how matter (water and nitrogen) moves through biological and physical components of the ecosystem.
• Water cycle plays a major role in cycling nitrogen and other cycles.
• Both cycles include natural processes.
• 他们负责为生态系统补充维持生命所需的营养。
• Both cycles work in balance.
• They are extremely important for the proper functioning of ecosystems.

水周期和氮循环有什么区别？

Water cycle and nitrogen cycle are two important biogeochemical cycles. The biogeochemical cycle that recycles water is the water cycle while the biogeochemical cycle that recycles nitrogen is the nitrogen cycle. So, this is the key difference between water cycle and nitrogen cycle. Moreover, the water cycle does not involve the action of bacteria while many processes of the nitrogen cycle are carried out by bacteria.

The below info-table summarizes the difference between water cycle and nitrogen cycle.

概括– Water Cycle vs Nitrogen Cycle

Water cycle and nitrogen cycle are two main cycles of an ecosystem. Water cycle explains the recycling of water through the ecosystem. Nitrogen cycle describes the recycling of nitrogen through living (biotic) and non-living (abiotic) components of an ecosystem. Water changes its state when cycling while nitrogen changes its chemical form when cycling. Therefore, the nitrogen cycle is more complex than the water cycle. Thus, this is the summary of the difference between water cycle and nitrogen cycle.

Reference:

1. “The Water Cycle (Article) | Ecology | Khan Academy”. Khan Academy, 2020,Available here。
2. “The Nitrogen Cycle: Processes, Players, And Human Impact | Learn Science At Scitable”. Nature.Com, 2020,Available here。

Image Courtesy:

1.“水周期”空气,大气下文（CC由2.0）通过Flickr
2. “Nitrogen Cycle 2” By File:Nitrogen Cycle.svg: *By Cicle_del_nitrogen_de.svg: *Cicle_del_nitrogen_ca.svg: Johann Dréo (User:Nojhan), traduction de Joanjoc d’après Image:Cycle azote fr.svg.derivative work: Burkhard (talk)Nitrogen_Cycle.jpg: Environmental Protection Agencyderivative work: Raeky (talk) – Cicle_del_nitrogen_de.svgNitrogen_Cycle.jpg (CC BY-SA 3.0)viaCommons Wikimedia