|
|||||
|
|
| 基于3S技术的玛曲县草地植被覆盖度变化及其驱动力 | |
| 引用本文： | 李文龙,薛中正,郭述茂,徐丹丹,范成勇,张晶. 基于3S技术的玛曲县草地植被覆盖度变化及其驱动力[J]. 兰州大学学报(自然科学版), 2010, 46(1) |
| 作者姓名： | 李文龙 薛中正 郭述茂 徐丹丹 范成勇 张晶 |
| 作者单位： | 兰州大学草地农业科技学院,农业部草地农业生态系统学重点实验室,兰州,730020 |
| 基金项目： | 国家自然科学基金项目(30700100);;国家高技术研究发展计划(863计划)项目(2007AA10Z232);;甘肃省“十一五”科技支撑项目(0708NKCA121) |
| 摘 要： | 利用GIS空间统计分析、多元统计分析方法和改进的遥感二分像元估算模型估算了玛曲县高寒草地植被覆盖度。结果显示:玛曲县2000,2002,2004,2006,2008年的平均植被覆盖度依次为66.17%,56.41%,57.34%,77.38%,58.93%。玛曲县高寒草地植被覆盖度总体呈下降趋势,优等植被的退化比较严重。草地植被的演变情况主要由优等植被覆盖向劣等植被覆盖演变,进一步证实了玛曲县草地呈退化趋势。并对导致玛曲县高寒草地植被覆盖度变化的因素进行PCA分析,结果显示人为因素是导致玛曲县植被覆盖度变化的主要因素,进一步说明人类活动对玛曲高寒草地生态环境变化影响巨大。 |
| 关 键 词： | 3S技术 植被覆盖度 驱动因子 玛曲县 |
Vegetation coverage changes and analysis of the driving forces in Maqu county based on 3S technology |
|
| LI Wen-long,XUE Zhong-zheng,GUO Shu-mao,XU Dan-dan,FAN cheng-yong,ZHANG Jing. Vegetation coverage changes and analysis of the driving forces in Maqu county based on 3S technology[J]. Journal of Lanzhou University(Natural Science), 2010, 46(1) | |
| Authors: | LI Wen-long XUE Zhong-zheng GUO Shu-mao XU Dan-dan FAN cheng-yong ZHANG Jing |
| Affiliation: | Key Laboratory of Grassland Agro-ecology System with the Ministry of Aguriculture/a>;School of Pastoral Agriculture Science and Technology/a>;Lanzhou University/a>;Lanzhou 730020/a>;China |
| Abstract: | Multivariable statistical analysis and improved second sub-pixels model of remote sensing were used to estimate the vegetation cover of the arctic-alpine meadows in Maqu county by GIS.In consequence, the average vegetation coverage of the study area was 66.17%in 2000,56.41%in 2002,57.34%in 2004,77.38% in 2006,58.93%in 2008 respectively.The vegetation cover of the arctic-alpine meadows in the study area tended to descend totally,especially with the degradation of the advanced vegetation.The main evolution of... |
| Keywords: | 3S technology vegetation coverage driving factor Maqu county |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |