| 伊犁河谷天然植被覆盖度的变化特征分析 |
| |
| 引用本文： | 李春娥,马静,何芷.伊犁河谷天然植被覆盖度的变化特征分析[J].地理空间信息,2022,20(2):84-88. |
| |
| 作者姓名： | 李春娥 马静 何芷 |
| |
| 作者单位： | 新疆维吾尔自治区测绘科学研究院,新疆 乌鲁木齐 830000 |
| |
| 基金项目： | 新疆绿洲区域地理国情监测项目 |
| |
| 摘 要： | 利用2000-2015年植被生长季(4~10月)MODIS/NDVI产品反演生成同时相的植被覆盖度数据,运用趋势性分析方法和皮尔逊相关系数法,进行了不同类型自然植被覆盖度时空变化特征及其与降水量、平均气温的驱动因素分析。结果表明从多年平均状态看,针叶林的植被覆盖度高于其他天然植被,灌丛类的最低,荒漠和灌丛类的植被覆盖度总体呈递增趋势;从年际尺度上看,草原和灌丛类植被对气温和降水量的响应规律大致呈反方向;不同类植被在春季(4月)对气温和降水量反映的差异性最大,与春季为新疆融雪高峰期有一定关系。
|
| 关 键 词： | 天然植被 植被覆盖度 趋势性分析 降水量 平均气温 |
Change Characteristic Analysis of Natural Vegetation Coverage in Yili River Valley |
| |
| LI Chun'e,MA Jing,HE Zhi.Change Characteristic Analysis of Natural Vegetation Coverage in Yili River Valley[J].Geospatial Information,2022,20(2):84-88. |
| |
| Authors: | LI Chun'e MA Jing HE Zhi |
| |
| Institution: | (Xinjiang Academy of Surveying&Mapping,Urumqi 830000,China) |
| |
| Abstract: | WeusedMODIS/NDVI products from 2000 to 2015(from April to October)to generate vegetation coverage of the same period.Then,we used the trend analysis method and Pearson correlation coefficient method to analyze the spatio-temporal change characteristics of different natural vegetation coverage types and the driving factors of precipitation and average temperature.The results show that the average vegetation coverage of coniferous forest is higher than that of other natural vegetation,and the vegetation coverage of shrub is the lowest.The vegetation coverage of desert and shrub shows an increasing trend.On the interannual scale,the responses of grassland and shrub vegetation to temperature and precipitation aregenerally in the opposite directions.The responses of vegetation types on temperature and precipitation had the biggest differ-ence in spring(April),which is related to the snowmelt peak in Xinjiang. |
| |
| Keywords: | natural vegetation vegetation coverage trend analysis precipitation average temperature |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
