| 基于GIS与马尔可夫模型的渭河盆地景观动态变化研究 |
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| 引用本文： | 张海龙,蒋建军,解修平,吴宏安,张丽.基于GIS与马尔可夫模型的渭河盆地景观动态变化研究[J].干旱区资源与环境,2005,19(Z1):119-124. |
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| 作者姓名： | 张海龙 蒋建军 解修平 吴宏安 张丽 |
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| 作者单位： | 1. 南京师范大学地理科学学院,南京,210097
2. 中国科学院地球环境研究所,西安,710075 |
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| 基金项目： | (Contract number: ICA4-CT-2002-10004). |
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| 摘 要： | 基于1988年与2003年两期TM影像,综合遥感与GIS技术以及景观生态学理论,深入分析了渭河盆地景观变化的数量和空间特征以及由此所引起的一系列生态环境效应,主要表现在:耕地、园地与城镇建设用地面积显著增加,林地、水体和未利用地面积呈减少趋势,城镇建设用地的增加是以侵占大量农田为代价的,而园地与耕地的增加则主要是通过开荒的方式。景观形状趋于复杂,破碎度降低,异质性下降,景观类型有向单一化或非均衡化方向发展的趋势,表明人类的开发活动增强,这样必然导致景观稳定性下降,因而降低了景观抗干扰的能力。最后采用马尔可夫模型对景观的变化趋势进行了预测。
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| 关 键 词： | 渭河谷地 景观变化 转移矩阵 马尔可夫 |
| 文章编号： | 1003-7578(2005)07-119-06 |
| 修稿时间： | 2005年10月18 |
Analysis on Landscape Dynamics of Weihe Basin Based on GIS and Markov Methods |
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| ZHANG Hai-long,JIANG Jian-jun,XIE Xiu-ping,WU Hong-an,ZHANG Li.Analysis on Landscape Dynamics of Weihe Basin Based on GIS and Markov Methods[J].Journal of Arid Land Resources and Environment,2005,19(Z1):119-124. |
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| Authors: | ZHANG Hai-long JIANG Jian-jun XIE Xiu-ping WU Hong-an ZHANG Li |
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| Institution: | ZHANG Hai-long~ |
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| Abstract: | Based on two phases of TM images acquired in 1988 and 2003,integratingwith the technologyof Remote Sensing and GIS as well as the theory of landscape ecology,we analyzed the landscape features of the quantitativeand the spatial change in Weihe basin which result in a series of environmental aftereffect.Itwas proved that the area of the build-up had a sharp increase in the way of invading too much plantation,whilethe orchard and the plantation were in the way of opening up wasteland;on the other hand,the forest,water-body and theuncultivated had decreased obviously.The landscape shape was getting more and more complex,while the number of patches and the heterogeneity decreased,which showed the landscape was getting more and more simplexand unsymmetricalby human disturbance.This would resultin the decrease of the landscape stability and flexibility. Inthe end,we forecasted the dynamic change trend of the landscape with the markov model. |
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| Keywords: | Weihe basin landscape change change matrix Markov |
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