Reasonable degree of the landscape pattern spatial distribution directly influences the sustainable use of regional land resources. Aiming at the unreasonable distribution of agricultural ecological landscape pattern,...Reasonable degree of the landscape pattern spatial distribution directly influences the sustainable use of regional land resources. Aiming at the unreasonable distribution of agricultural ecological landscape pattern, the deterioration of ecological environment, the Cellular Automaton (CA) principles were used to establish the optimized rules, such as landscape suitability rules, landscape prior rules and restraint conditions; and the standardization of the spatial data was realized by the competence of GIS spatial data handling and data spatial analysis, and finally, landscape pattern spatial optimization model was established with the support of MATLAB platform, i.e. LPSO Model. The spatial pattern optimization of agricultural landscape in west Jilin Province has been realized, which also laid a theoretical foundation for the proper spatial distribution of landscape pattern in west Jilin Province and realizing the sustainable agricultural development.展开更多
以内蒙古巴彦淖尔市磴口县为研究区,在LPI-CA-Markov模型的基础上构建AES-LPI-CA模型,利用人工内分泌系统(AES)调整元胞自动机邻域中中心元胞的转移概率,并基于磴口县2000年与2007年景观格局数据对县域2014年景观格局进行模拟,将该模型...以内蒙古巴彦淖尔市磴口县为研究区,在LPI-CA-Markov模型的基础上构建AES-LPI-CA模型,利用人工内分泌系统(AES)调整元胞自动机邻域中中心元胞的转移概率,并基于磴口县2000年与2007年景观格局数据对县域2014年景观格局进行模拟,将该模型模拟结果与LPI-CA-Markov模型、CA-Markov模型的模拟结果进行对比,结果显示3种模型模拟结果的KIA(Kappa index of agreement,以2014年实际景观分布为参照)依次为0.823 6、0.785 5、0.768 2,AES-LPI-CA模型显示了较高模拟精度。展开更多
对生物模式的形成机制的探讨一直是生命科学特别是发育生物学的重要课题。目前已经积累了大量的多学科的研究数据并提出了一些的理论,但生物模式形成的真正机制仍然很不清楚而需更深入的探索。本文试图运用元胞自动机方法建立一个从单...对生物模式的形成机制的探讨一直是生命科学特别是发育生物学的重要课题。目前已经积累了大量的多学科的研究数据并提出了一些的理论,但生物模式形成的真正机制仍然很不清楚而需更深入的探索。本文试图运用元胞自动机方法建立一个从单细胞及其行为到细胞与细胞、细胞与胞外环境相互作用下生物模式形成的模型。并应用此模型,基于“诱导开关”概念,提出一种新的离散模型来模拟盘基网柄菌(D ictyostelium d iscoid eum)的聚集模式。展开更多
文摘Reasonable degree of the landscape pattern spatial distribution directly influences the sustainable use of regional land resources. Aiming at the unreasonable distribution of agricultural ecological landscape pattern, the deterioration of ecological environment, the Cellular Automaton (CA) principles were used to establish the optimized rules, such as landscape suitability rules, landscape prior rules and restraint conditions; and the standardization of the spatial data was realized by the competence of GIS spatial data handling and data spatial analysis, and finally, landscape pattern spatial optimization model was established with the support of MATLAB platform, i.e. LPSO Model. The spatial pattern optimization of agricultural landscape in west Jilin Province has been realized, which also laid a theoretical foundation for the proper spatial distribution of landscape pattern in west Jilin Province and realizing the sustainable agricultural development.
文摘以内蒙古巴彦淖尔市磴口县为研究区,在LPI-CA-Markov模型的基础上构建AES-LPI-CA模型,利用人工内分泌系统(AES)调整元胞自动机邻域中中心元胞的转移概率,并基于磴口县2000年与2007年景观格局数据对县域2014年景观格局进行模拟,将该模型模拟结果与LPI-CA-Markov模型、CA-Markov模型的模拟结果进行对比,结果显示3种模型模拟结果的KIA(Kappa index of agreement,以2014年实际景观分布为参照)依次为0.823 6、0.785 5、0.768 2,AES-LPI-CA模型显示了较高模拟精度。
文摘对生物模式的形成机制的探讨一直是生命科学特别是发育生物学的重要课题。目前已经积累了大量的多学科的研究数据并提出了一些的理论,但生物模式形成的真正机制仍然很不清楚而需更深入的探索。本文试图运用元胞自动机方法建立一个从单细胞及其行为到细胞与细胞、细胞与胞外环境相互作用下生物模式形成的模型。并应用此模型,基于“诱导开关”概念,提出一种新的离散模型来模拟盘基网柄菌(D ictyostelium d iscoid eum)的聚集模式。