| 气温、降水量和人类活动对长江流域植被NDVI的影响 |
| |
| 引用本文： | 崔利芳,王伦澈,屈赛,邓利欢,王兆夺.气温、降水量和人类活动对长江流域植被NDVI的影响[J].地球科学,2020,45(6):1905-1917. |
| |
| 作者姓名： | 崔利芳 王伦澈 屈赛 邓利欢 王兆夺 |
| |
| 作者单位： | 1.黄冈师范学院地理与旅游学院, 湖北黄冈 438000 |
| |
| 基金项目： | 国家自然科学基金项目41601044黄冈师范学院博士基金项目204201832603高级别培育项目204201911503 |
| |
| 摘 要： | 为了了解气温、降水量和人类活动对流域植被NDVI(normalized difference vegetation index)的影响，以长江流域为研究区，运用一元线性回归分析法和Theil-Sen Median趋势分析法研究了长江流域气温、降水量和植被NDVI变化特征，同时利用相关分析法和残差分析法探讨气温、降水量和人类活动对植被NDVI变化的影响.结果表明:1960—2015年长江流域年平均温度显著上升，而降水量的变化趋势并不显著；1982—2015年流域NDVI呈显著增加趋势；1982—2015年流域NDVI与气温的相关性较高，然而与降水量的相关性并不显著；人类活动使流域NDVI增加的区域主要分布于流域北部、东南和西南部分地区，而使NDVI下降的区域位于流域中西部区域和长三角地区.气温对长江流域植被NDVI变化的影响大于降水，气候变暖和人类活动对流域生态环境具有一定程度的影响.
|
| 关 键 词： | 气温 降水量 NDVI 长江流域 遥感 |
| 收稿时间： | 2019-04-26 |
Impacts of Temperature,Precipitation and Human Activity on Vegetation NDVI in Yangtze River Basin,China |
| |
| Abstract: | To investigate the impacts of temperature,precipitation and human activity on the vegetation normalized difference vegetation index (NDVI) variation,in this study,taking Yangtze River basin (YRB) as the study area,temperature,precipitation and vegetation NDVI variation were analyzed using linear regression (LR) analysis and Theil-Sen Median trend analysis. The impacts of temperature,precipitation and human activity on vegetation NDVI variation were analyzed using the Pearson correlation analysis and residuals analysis. The results show that the annual mean temperature significantly increased over the whole basin during 1960—2015. However,the precipitation shows little change. The annual mean NDVI shows a significant increasing trend over the whole study area during 1982—2015. The correlation coefficients between NDVI and temperature are high. However,the mean NDVI has no significant correlation with annual precipitation. The regions where the NDVI increased caused by human activity were mainly located in the northern,southeastern and southwestern YRB,while the regions where the NDVI decreased caused by human activity were mainly located in the small part of mid-western YRB and YRD. This study highlights that the mean air temperature has stronger effects on vegetation NDVI than precipitation and the effects of global warming and human activity on ecological environment at the local scale. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地球科学》浏览原始摘要信息 |
|
点击此处可从《地球科学》下载全文 |
|
