mecwell的个人博客分享 http://blog.sciencenet.cn/u/mecwell

博文

进化很好理解,但怎么用数学模型来表达呢?

已有 7689 次阅读 2017-1-25 18:14 |系统分类:科研笔记| 生态学, 数学, style, 模型

这些年,我一直在想下面的问题,并把它向很多外国大理论生态学家提出,可他们的回复都是 I don't know。

Although it is very easy to intuitively understand Darwin's theory of evolution, i.e, ever increase complexity of system structure sustained by matter, energy and information connections for acclimation, I think that there is a more enormous challenge on how to express it by mathematical models whose analytical expression must also be changed along with time. For example, suppose that at t moment,the kinetic model of a specific ecosystem could be written as follows:

dx/dt= f(t)(t,x,p,u) = 3*x*u- 2*exp(-x)

wheret x, u is state and input, respectively. but at t+t moment,it maybe changed by eco-work during t into new analytical expression as follows:

dx/dt= f(t+t)(t,x,p,u) = x^2-2*exp(-2*x)+u*exp(x)

If we can solve this huge problem, really valid ecological models would be developed to describe

and predict the ecosystem behaviors, such as the species origin, community succession, niche differentiation, ecosystem evolution, and so forth.

      这个问题不解决,近5年来,我所建立的生态学模型都很naive,因为和所有建模者一样,把生态系统看成了机械系统,没有触及它的根本动力学机制。生态系统的变化不是量变,而是质变,我理解质变就是结构的复杂化。


Robust stability of closed artificial ecosystem cultivating cabbage realized.pdf

Low-dose ionizing radiation limitations to seed germination.pdf

Analysis and optimization of the effect of light and nutrient solution on wheat .pdf

Construction  of  closed  integrative  system  for  gases  robust  stabilization.pdf

Controller development of photo bioreactor for closed-loop regulation of O2 prod.pdf

Design  and  control  of  rotating  soil-like  substrate  plant-growing facility.pdf

Design and optimization of photo bioreactor for O2 regulation and control by sys.pdf

Gas equilibrium regulation by closed-loop photo bioreactor built on system dynam.pdf

Gas exchange between humans and multibiological life support system.pdf

Growth  characteristics  comparison  of  lettuce  and  silkworms  in  and  out  .pdf

Increased power density from a spiral wound microbial fuel cell.pdf

Influence mechanism of low dose ionizing radiation on Escherichia coli DH5 popul.pdf

Mathematical  modeling,  design  and  optimization  of  conceptual  con?guration.pdf

Photobioreactor  with  ideal light dark  cycle  designed  and  built from mathem.pdf

Robust stability mechanism of an artificial ecosystem based on biological mutati.pdf

The design and optimization for light-algae bioreactor controller based onArti?c.pdf




https://blog.sciencenet.cn/blog-280964-1029865.html

上一篇:清明节,沉痛悼念Sven Eric Jørgensen教授
下一篇:什么样的生态系统结构才具有最大的eco-exergy ?
收藏 IP: 36.102.208.*| 热度|

9 罗祥存 苏保霞 高建国 许培扬 王安良 黄河宁 彭振华 刘跃 Hyq18936853798

该博文允许注册用户评论 请点击登录 评论 (47 个评论)

数据加载中...

Archiver|手机版|科学网 ( 京ICP备07017567号-12 )

GMT+8, 2024-10-7 23:19

Powered by ScienceNet.cn

Copyright © 2007- 中国科学报社

返回顶部