Knowledge Resource Center for Ecological Environment in Arid Area
辽宁省耕地植被指数变化特征分析 | |
其他题名 | THE ANALYSIS ABOUT CHANGES OF CULTIVATED LAND VEGETATION INDEX IN LIAONING PROVINCE |
武晋雯; 纪瑞鹏; 张玉书; 杨素英 | |
ISSN | 1009-0827 |
出版年 | 2006 |
卷号 | 26期号:3页码:279-285 |
中文摘要 | 利用NOAA/AVHRR资料通道1(0.58~0.68/lm)、通道2(0.725~1.1mum)数据计算归一化植被指数(NDVI),对辽宁省5个气候区内1999~2004年208个旱田监测点和84个水田监测点的作物生长状况进行连续监测,分析NDVI年际、旬际变化特征。结果表明:辽宁耕地(旱田、水田)植被指数年际间差异明显,造成旱田年际变化以及地区差异的主要原因是降水时空分布不均匀的结果,因此旱田2004年NDVI达到近年最大,2001年较低;而造成水田年际差异以及地区差异的原因是受水田用水状况以及光温条件的影响,水田2003年NDVI最大,2001年较低。在整个生长季内(5~9月份),辽宁耕地植被指数呈单峰型变化,从5月上旬开始到6月中旬是缓慢增长阶段,6月下旬到8月下旬快速增长并达到最大,之后又迅速降低;2004年耕地植被指数旬变化趋势与6a平均植被指数旬变化趋势基本相同,但作物生长前期NDVI较6a平均值低,主要原因是受到2004年春夏之交严重干旱的影响。 |
英文摘要 | Using the datum of NOAA/AVHRR of passway 1 (0.58~0.68mum) and passway 2(0. 725~1.1mum), the normalized difference vegetation index (NDVI) is calculated. The plants growing situation is continuously monitored and NDVI is analyzed in 208 monitoring points of dry land and 84 monitoring points of paddy field of five climatic regions in Liaoning Province in 1999~2004. The results show that the annual variation difference of cultivated land vegetation index is obvious in Liaoning Province. The main reason for annual change as well as the regional disparity of dry farmland is the non-uniformity of timespace distribution of precipitation,therefore, NDVI of the dry farmland in 2004 achieved the biggest in recent years,it is low in 2001. The annual change and regional disparity of the paddy field result from the difference in condition of water used in paddy field and light and temperature as well. NDVI of the paddy field in 2003 is the biggest, it is low in 2001. In growing period (May~September) ,the unimodal type of NDVI is found in the cultivated land(dry land,paddy field ) in Liaoning, the NDVI has increased slowly, from the first ten days of May to the mid-June, then has increased fast and reaches the maximum from the last ten days of June to the last ten days of August, finally, it reduced rapidly. Most of NDVI for ten days period of cultivated land in 2004 showed the same tendency as 6 years average, but during crops growing it is less than the latter (1999~2004)because of the arid of the same period. |
中文关键词 | 耕地 ; NDVI年际变化 ; 旬变化 ; 对比分析 |
英文关键词 | Cultivated land NDVI Annual variation Dekad change Comparative analysis |
语种 | 中文 |
国家 | 中国 |
收录类别 | CSCD |
WOS类目 | AGRICULTURE MULTIDISCIPLINARY |
WOS研究方向 | Agriculture |
CSCD记录号 | CSCD:2450089 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/219998 |
作者单位 | 中国气象局沈阳大气环境研究所, 沈阳, 辽宁 110016, 中国 |
推荐引用方式 GB/T 7714 | 武晋雯,纪瑞鹏,张玉书,等. 辽宁省耕地植被指数变化特征分析[J],2006,26(3):279-285. |
APA | 武晋雯,纪瑞鹏,张玉书,&杨素英.(2006).辽宁省耕地植被指数变化特征分析.,26(3),279-285. |
MLA | 武晋雯,et al."辽宁省耕地植被指数变化特征分析".26.3(2006):279-285. |
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