| 地表土壤湿度和植被状况的监测及其与沙尘暴发生的关系探讨 |
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| 引用本文： | 陈巧,陈永富,胡庭兴.地表土壤湿度和植被状况的监测及其与沙尘暴发生的关系探讨[J].四川农业大学学报,2005,23(3):295-299. |
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| 作者姓名： | 陈巧 陈永富 胡庭兴 |
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| 作者单位： | 中国林业科学研究院,资源信息研究所,北京,100091;四川农业大学,林学园艺学院,四川,雅安,625014 |
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| 基金项目： | 国家重点公益性研究项目“沙尘暴监测技术”（项目编号：2000DIA10002）. |
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| 摘 要： | 利用NOAA/AVHRR数据,采用单时相乘积法计算土壤湿度,采用NDVI指示地表状况,利用地表土壤相对湿度旬平均值、NDIV旬平均值、风速以及三者的综合值与实测的沙尘暴旬数据,定性和定量分析了中国北方地区土壤湿度、植被覆盖、风速与沙尘暴发生的关系,结果表明风速是影响沙尘暴发生的关键因素,与沙尘暴发生成正比;土壤相对湿度与地面植被在一定程度上影响了沙尘暴的发生,与沙尘暴的发生成反比;由平均风速、土壤相对湿度和NDVI组成的综合因子与沙尘暴发生次数及能见度的相关性高于风速与后二者的相关性,因此综合因子具有指示和监测沙尘暴发生的潜力。
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| 关 键 词： | 土壤相对湿度 单时相乘积法 NDVI 沙尘暴 |
| 文章编号： | 1000-2650（2005）03-0295-05 |
| 收稿时间： | 2005-03-29 |
| 修稿时间： | 2005年3月29日 |
Study on the Relationship between Occurring Time of Sandstorm and Soil Moisture as well as Vegetation Cover |
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| Chen Qiao,Chen Yong-fu,Hu Ting-xing.Study on the Relationship between Occurring Time of Sandstorm and Soil Moisture as well as Vegetation Cover[J].Journal of Sichuan Agricultural University,2005,23(3):295-299. |
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| Authors: | Chen Qiao Chen Yong-fu Hu Ting-xing |
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| Institution: | 1. Research Institute of Forest Resource Information Techniques, Chinese Academe of Forestry, Beijing 100091, China; 2. College of Forestry and Horticulture, Sichuan Agricultural University, Yaan 625014, Sichuan, China |
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| Abstract: | With NOAA/AVHRR data, the single phase product method is used to estimate the soil moisture of surface cover, and NDVI is used to estimate vegetation cover, and further more the relationship between percentage of soil moisture, vegetation cover and time of sandstorm in north of China was analyzed. The results show that wind speed is the key factor which plays an important role on the sandstorm. The occurring frequency of sandstorm goes up with the rise of wind speed. But soil moisture and vegetation cover plays a negative effect on the frequency and intensity of sandstorm. |
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| Keywords: | soil moisture single phase product method NDVI sandstorm |
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