Forest ecologists have been more concerned than agronomists with the inner mechanisms of natural and artificial ecosystems . 森林生态学家比农学家更关心天然生态系统和人工生态系统的内部机制。
A swarm - based artificial ecosystem model 的人工生态系统模型
It ' s an artificial ecosystem designed to simulate corky ' s natural habitat 温箱是人工的环境模拟克基生长的自然环境
As an indicator of biodiversity and the function of ecosystem , avian community plays important role in either the natural or artificial ecosystem 鸟类是野生动物的一个重要组成部分,无论是对自然系统还是人造系统的生态功能和生物多样性都具有重要指示作用。
Among the elements required by plant , nitrogen is the largest one , and at the same time it is a limited factoring the signal plant . natural ecosystem and artificial ecosystem 氮素是植物需求量最大的元素,同时是植物个体乃至自然生态系统和人工生态系统中作物生长的限制因子。
Based on the enviroment of the nandagang wetland , combining the outside investigation and inside analysis , adopting the mathematical analysis methods such as the principal component analysis ( pca ) , regression analysis , correlation analysis etc . the type of wetland ecosystem , the flora of the wetland plant , the type , the function , the formation and succession and the outside influencial factors of the vegetation , the ecological conditions and biomass of the reed population are all studied . the main results can be concluded as follows : 1 ) the nandagang wetland is a freshwater one close to the bohai sea . its ecosystem can be divided into two parts : natural ecosystem and semi - artificial ecosystem 本研究从南大港湿地的实际环境出发,采用样方调查的方法,以外业调查和内业分析相结合、野外采集测量与实验室分析处理相结合、定性描述与定量分析相结合为根本研究路线,应用主分量分析( pca ) 、回归分析、相关分析等数学分析手段,对南大港湿地生态系统的类型、湿地植物的区系组成、湿地植被类型、植被的功能、植被的形成和演替、植被的外界影响因素、湿地芦苇种群的生态条件和种群生物量等方面进行了较深入的研究,主要研究结果如下: 1 )南大港湿地是滨海泻湖型淡水湿地。
In addition , by means of landscape diversity , evenness , dominance , fragmentation , fractal dimension and statistics , the author respectively analyzed landforms , plant , soil and so on in the original ecosystem of the typical dumping site , the damaged ecosystem and the rehabilitated ecosystem . in fact , landscape matrix has been completely converted from the original ecosystem to the rehabilitated ecosystem . the indexes of diversity , evenness and dominance in forest landscape have sharply increased , but segregation decreased , which demonstrates that the rehabilitated ecosystem has been a reasonable and fine artificial ecosystem under the control of human 在此研究的基础上,采用景观多样性指数、优势度指数、均匀度指数和破碎度指数,以及分维方法和统计分析相结合的方法,对矿区典型排土场的原生态系统、破坏后的生态系统、重建生态系统的地貌、植被、土壤等景观要素进行了分析,结果表明:从原生态系统到重建生态系统,景观基质发生了根本性的变化,林地的多样性、均匀性、优势度大幅度增加,分离度降低,显示了重建生态系统在人为的调控下,已初步形成一个结构较为合理、功能良好的人工复合生态系统。
The theory of landscape ecology about drastic disturbance of landforms has been richened . a practical way could be found to identify the final direction of artificial ecosystem succession . moreover , the results can be applied into study the land reclamation and ecological rehabilitation of the developed opencast mines and developing ones in loess plateau 本研究结果的学科价值:丰富了极端生境下剧烈扰动地貌的景观生态学理论,为确定人工正确诱导下的矿区生态演替方向提供了可借鉴的方法和途径;应用价值主要体现:研究结果适宜于我国黄土高原正在开采和将要开采的大型露天煤矿的土地复垦与生态重建。