粤北岩溶山区连江流域植被覆盖度动态变化研究

王兮之; 甘春英; 梁钊雄; 高全洲

doi:10.3969/j.issn.1001-4810.2010.04.013

粤北岩溶山区连江流域植被覆盖度动态变化研究

doi: 10.3969/j.issn.1001-4810.2010.04.013

1.
佛山大学资源环境系；中山大学地理科学与规划学院
2.
佛山大学资源环境系
3.
中山大学地理科学与规划学院

基金项目: 国家自然科学基金项目资助(31070426、30870469)

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出版历程
- 收稿日期: 2010-05-25
- 发布日期: 2010-12-25

Regime of vegetation coverage in Lianjiang Watershed in North Guangdong Karst Mountain

1.
Department of Resource and Environment；School of Geography and Planning, Sun Yat-sen University
2.
Department of Resource and Environment
3.
School of Geography and Planning, Sun Yat-sen University

摘要

摘要: 基于多时相MODIS数据和归一化植被指数的像元二分模型以及GIS技术,分析了2001—2010年连江流域植被覆盖度的时空变化特征。结果表明:连江及其子流域、岩溶区与非岩溶区的植被覆盖度空间分布差异性明显;近10年来连江流域的植被覆盖度总体上呈下降趋势,高植被覆盖度与中度植被覆盖度的面积数量变化剧烈,较高植被覆盖度与较低植被覆盖度的面积相对稳定;岩溶区植被分布以较高植被覆盖度、中植被覆盖度和高植被覆盖度为主,其分布面积分别占整个流域面积的53.84%、25.59%、18.54%,而非岩溶区则以高植被覆盖度、较高植被覆盖度和中植被覆盖度为主,分别占整个流域面积的48.12%、34.10%、15.05%;近10年来流域的植被覆盖度下降明显,且空间分布范围广,植被覆盖度相对稳定的区域占整个流域面积的65%以上,植被覆盖度下降区的面积比上升区增加近20%。
- 植被覆盖度 /
- MODIS-NDVI /
- 岩溶山区 /
- 连江流域
Abstract: The spatial and temporal regimes of the vegetation cover from 2001 to 2010 in the Lianjiang Watershed are analyzed by means of the multi-temporal MODIS-NDVI and GIS and the dimidiate pixel model techniques in this paper. The results show that there is obvious otherness in vegetation covers between the Lianjiang watershed and its sub-streams and between karst and non-karst areas; and the vegetation coverage keeps decreasing in the recent 10 years with the high coverage and medium coverage areas undulating sharply, but the comparatively high or low coverage areas keeping stable. The karst area are mainly composed of high(53.84%), medium(25.59%) and comparatively high(18.54%) vegetation coverage, but comparatively high(48.12%), comparatively high(34.10%) and medium(15.05%) in no-karst area. The vegetation coverage has been clearly decreased in the recent 10 years as a whole and the vegetation coverage decreasing area is 20% more than the increasing area.
- vegetation coverage /
- MODIS-NDVI /
- karst mountain areas /
- Lianjiang Watershed

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参考文献(15)

[1]	王德炉,朱守谦,黄宝龙.石漠化概念及其内涵［J］.南京林业大学学报(自然科学版),2004,28(6):87-90.
[2]	王世杰.喀斯特石漠化概念演绎及其科学内涵的探讨［J］.中国岩溶,2002,21(2):101-105.
[3]	刘拓,周光辉,但新球,等.中国岩溶石漠化——现状、成因与防治［M］.北京:中国林业出版社,2009,69-72.
[4]	李苗苗,吴炳方.密云水库上游植被覆盖度的遥感估算［J］.资源科学,2004,26(4):153-159.
[5]	Price J C. Comparing MODIS and ETM+ data for regional and global classification ［］］. Remote Sensing of Environment,2003,86(4):1835-1852.
[6]	Gutman G, Ignatov A. The derivation of the green vegetation fraction from NOAA/ AVHRR data for use in numerical weather prediction models ［J］. International Journal of Remote Sensing,1998,19:1533-1543.
[7]	Huete A, Justice C, Leeuwen W V. Modis Vegetation Index(MOD13) Version 3. Algorithm Theoretical Basis Document［M/OL］.Http://modis.gsfc.nasa.gov/data/atbd/ atbd_mod13.pdf,1999.
[8]	高志海,李增元,魏怀东,等.基于遥感的民勤绿洲植被覆盖度变化定量监测［J］.地理研究,25(4):588-595.
[9]	阳小琼,朱文泉,潘耀忠,等.基于修正的亚像元的植被覆盖度估算［J］.应用生态学报,2008,19(8):1860-1864.
[10]	曾士荣.粤北岩溶石山地区石漠化现状及其对水环境的影响［J］.水文地质工程地质,2006,3:101-105.
[11]	黄金国,李森,魏兴琥.粤北岩溶山区石漠化土地综合治理模式及实施途径——以英德、阳山、乳源、连州4县(市)为例［J］.西北林学院学报,2009,24(5):171-175.
[12]	王兮之,李森,王金华.粤北典型岩溶山区土地石漠化景观格局动态分析［J］.中国沙漠,2007,27(5):758-764.
[13]	曾士荣.粤北连江流域岩溶石山地区干旱缺水成因及防治［J］.科技创新导报,2009,28:126-127.
[14]	邹鸣.连江流域水文特性分析［J］.广东水利水电,2005,6:74-75.
[15]	黄靖,夏智宏.基于MODIS遥感数据的武汉市植被覆盖度变化监测分析［J］.气象与环境科学,2009,32(2):16-20.