| 雅鲁藏布江上中游地区不同农牧活动强度下的景观格局分异 |
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| 引用本文： | 熊东红,周红艺,杨忠,陈学华.雅鲁藏布江上中游地区不同农牧活动强度下的景观格局分异[J].西南农业学报,2007,20(3):443-447. |
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| 作者姓名： | 熊东红 周红艺 杨忠 陈学华 |
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| 作者单位： | 1. 中国科学院、水利部成都山地灾害与环境研究所,四川,成都,610041;中国科学院研究生院,北京,100049
2. 中国科学院、水利部成都山地灾害与环境研究所,四川,成都,610041 |
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| 基金项目： | 中国科学院山地灾害与地表过程重点实验室开放基金;中国科学院成都山地灾害与环境研究所青年种子基金资助 |
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| 摘 要： | 本文分别以雅鲁藏布江上中游三个不同农牧活动强度区——低强度区仲巴、中强度区昂仁和高强度区日喀则三县/市为例,分析了该三个研究片区的不同农牧活动干扰强度下的景观格局变异。结果表明:自上游的仲巴至中游的日喀则,随着人类农牧活动强度的加大,景观格局亦随之呈现规律性的变异,自然景观和半自然景观面积百分比逐渐下降,而包括耕地及居民地在内的人工景观面积比例上升明显;上游的仲巴片区景观形状简单、粒径粗大、分离度小、景观多样性低,而至中游地区的日喀则片区,则表现为景观形状复杂、粒径小、分离度大、景观多样性丰富。
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| 关 键 词： | 雅鲁藏布江上中游 景观格局分异 景观指数 农牧活动 |
| 文章编号： | 1001-4829（2007）03-0443-05 |
| 修稿时间： | 2006-12-13 |
Variations on landscape pattern under different intensity activities for cropping and pasturing in the upper and middle reaches of Yarlung Zangbo River |
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| XIONG Dong-hong,ZHOU Hong-yi,YANG Zong,CHEN Xue-hua.Variations on landscape pattern under different intensity activities for cropping and pasturing in the upper and middle reaches of Yarlung Zangbo River[J].Southwest China Journal of Agricultural Sciences,2007,20(3):443-447. |
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| Authors: | XIONG Dong-hong ZHOU Hong-yi YANG Zong CHEN Xue-hua |
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| Institution: | 1. Institute of Mountain Hazards and Environment ,Chinese Academy of Science(GAS |
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| Abstract: | Taking Zhongba county,Angren county,Rikaze city located at the upper and middle reaches of Yarlung Zangbo River as landscape units,this paper studied the variations on landscape pattern under different intensity activities for cropping and pasturing in the three areas.The results showed that:down from Zhongba at the upper reaches to Rikaze at the middle ones,regular variations occur on the landscape pattern with human disturbance intensity on cropping and pasturing increasing.The area percentage for natural and semi-natural landscape decreases while the one for artificial landscape including cultivated land and construction land increases significantly.In Zhongba,the landscape structure appeared to be simpler with coarse grains and a less rich diversity.While in Rikaze,the landscape showed a complicated shape with finer grains and a relatively richer diversity. |
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| Keywords: | variations on landscape pattern landscape index cropping and pasturing activity the upper and middle reaches of Yarlung Zangbo River |
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