What are the characteristics of the material cycle and the energy cycle?

The analysis and the answer are as follows:

1. Material circulation:

The material cycle of an ecosystem refers to the cyclic movement of inorganic compounds and elemental matter through the ecosystem. The material cycle in an ecosystem can be summarized by two concepts: pool and flow. A reservoir is made up of a certain amount of a certain compound present in some biotic or abiotic components of an ecosystem.

2. Energy circulation

The earth's atmospheric system absorbs solar radiation and long-wave radiation emitted by the surface to make the climate system have energy cycles and changes, and at the same time, the form of radiant energy will be converted to form non-radiative form of energy, and the movement of the atmosphere is formed due to the difference in the mass of the atmosphere, the earth's gravity, temperature and density.

Therefore, the atmosphere has various forms of energy related to the physical conditions and movements of the atmosphere, and various forms of energy are transformed in the process of atmospheric movement to form various weather and climate phenomena and processes, which are called energy cycles. Therefore, the atmospheric energy cycle is of great significance in climate research.

The importance of both:

The flow of energy is one-way, decreasing, non-cyclical; Between the biome and the inorganic environment, matter is constantly circulating, and some of the substances are circulating.

Energy flow and material circulation are the main functions of ecosystems, and they are simultaneous, interdependent and inseparable.

The fixation, storage, transfer and release of energy are inseparable from the synthesis and decomposition process of matter.

Matter acts as a carrier of energy, allowing energy to flow along the food chain (net); Energy acts as a power force that enables matter to constantly circulate back and forth between the biome and the inorganic environment. It is through the flow of energy and the circulation of matter that the various components of the ecosystem can be closely linked together to form a unified whole.

Characteristics of energy flow: energy flows through the ecosystem and eventually dissipates in the form of heat, and the energy flow is unidirectional, decreasing step by step, so the ecosystem must constantly obtain energy from the outside world.

Characteristics of the material cycle: The flow of matter is circular, and all kinds of substances can be returned to the environment in the form of being used by plants.

But these two processes are inextricably linked, because energy is stored in organic molecular bonds, and when energy is released through the respiration process, the organic compounds are broken down and re-released into the environment in the form of simpler substances.

The material cycle is global.

Energy can't be said to be circular.

It should be the flow of energy.

The flow of energy is unidirectional and decreasing.

The synthesis of the energy flowing in the biosphere is all the solar energy fixed by the producer.

Organisms of a higher level absorb only 20 (highest) and 10% (lowest) of the energy of the previous one

Yes, yes, if we talk about the cycle of biology, that's roughly what it looks like.

The material cycle is bidirectional, and the energy flow is one-way, decreasing with the food chain.

The cycle of matter contains the cycle of energy.

【Answer】A [Answer Analysis] Test Question Analysis: The material cycle is characterized by circularity and globality, and the characteristics of energy flow are one-way transmission, non-circulation, and step-by-step decreasing, so A is correct;

Test Points: This question mainly examines the function of the ecosystem, and is intended to test the candidate's ability to understand the main points of what they have learned, grasp the internal connections between knowledge, and draw correct conclusions through comparison.

The structure and function of the ecosystem of the eight biologicals of Beijing Normal University - the material cycle is accompanied by the flow of energy.

1.The fixation, storage, transfer and release of energy are inseparable from the synthesis and decomposition of matter.

2.Matter acts as a carrier of energy, allowing energy to flow along the food chain and food web; Energy acts as a driving force that enables matter to constantly circulate between the biome and the inorganic environment.

3.The flow of energy and matter links the various components of the ecosystem into a unified whole.

The flow of energy is one-way and decreasing;

The material cycle is global and repetitive;

Matter is the carrier of energy flow;

Energy is the driving force of the material cycle;

Information transfer can regulate the interspecific relationship of organisms and maintain the stability of ecosystems.

The material cycle is accompanied by the flow of energy, which is one-way and decreasing, and the transmission of information is not necessarily related to the flow of energy.

The flow of energy is only one-way, decreasing step by step.

First of all, I would like to correct that there is no circulation of energy, so LZ should ask about the similarities and differences between the flow of energy and the circulation of matter. Energy flow and material circulation, if there is anything in common, there is no doubt that they are both necessary links in the evolution of the ecosystem, one is the material level and the other is the energy level, or the energy flow is generally accompanied by the material cycle.

If you want to say the difference, you will understand the two meanings or volt, remember that the textbook emphasized the flow of energy in the undergraduate textbook has such a key word: unidirectional flow (matter is circulating, energy is not circulating), decreasing step by step (matter is not decreasing), I hope to inspire you.