长江源区土地利用/覆盖现状及成因分析

摘要/Abstract

摘要： 以地形图、TM影像为主要信息源,利用遥感和GIS的空间分析技术对长江源区的土地利用/覆盖现状进行研究。在此基础上分析土地利用现状特征的形成原因。研究结果表明,长江源区草地面积为8 377 079.3 hm2,占研究区面积的58.9%,其中高覆盖度草地、中覆盖度草地、低覆盖度草地分别占研究区面积的10.28%、21.36%、27.23%;未利用土地面积为4 595 112.1 hm2,占研究区面积的32.3%,其中沙地、戈壁、盐碱地、沼泽地、裸土地、裸岩石砾地、高寒荒漠分别占研究区面积的3.66%、5.80%、0.25%、4.19%、2.24%、6.28%、9.88%;其次为水域、林地、耕地、城乡工矿居民用地,分别占研究区面积的7.2%、1.6%、0.01%、0.004%。

关键词: 长江源区, 土地利用/覆盖, 遥感

Abstract: The status of land use/land cover in the source regions of the Yangtze River was studied by using the techniques of remote sensing and the geographical information system based on the information resources of TM images in 2005 and relief maps. The results show that the grassland area was 8 377 079.3 hm2, occupying 58.9% of the total source area, in which the high coverage grassland, moderate coverage grassland and low coverage grassland occupied 10.28%, 21.36%, 27.23% of the total source area, respectively; the unused land area was 4 595 112.1 hm2, occupying 32.3% of total area, in which sand land, gobi desert, saline land, marshland, bare land, bare rock and cold desert occupied 3.66%, 5.80%, 0.25%, 4.19%, 2.24%, 6.28%, 9.88%, respectively; the water area, forestry land, farmland, residential land occupied 7.2%, 1.6%, 0.01%, 0.004% of the total area, respectively. At last, the reasons for this status was also analyzed.

Key words: source regions of the Yangtze River, land use and land cover, remote sensing

中图分类号:

逯军峰;董治宝*;胡光印;颜长珍;宋翔;魏振海. 长江源区土地利用/覆盖现状及成因分析[J]. 中国沙漠, 2009, 29(6): 1043-1048.

LU Jun-feng;DONG Zhi-bao;HU Guang-yin;YAN Chang-zhen;SONG Xiang;WEI Zhen-hai. Land Use/Land Cover Status and Forming Causes in Source Regions of Yangtze River[J]. JOURNAL OF DESERT RESEARCH, 2009, 29(6): 1043-1048.

参考文献

[1]王根绪,丁永建,王建,等.近15年来长江黄河源区的土地覆盖变化[J].地理学报,2004,59（2）:163-173.
[2]王根绪,程国栋.江河源区的草地资源特征与草地生态变化[J].中国沙漠,2001,21（2）:101-107.
[3]吕新苗,郑度.气候变化对长江源地区高寒草甸生态系统的影响[J].长江流域资源与环境,2006,15（5）:603-607.
[4]沈永平,王根绪,吴青柏,等.长江-黄河源区未来气候情景下的生态环境变化[J].冰川冻土,2002,24（3）:308-314.
[5]杨建平,丁永建,陈仁升.长江黄河源区水文和气象序列周期变化分析[J].中国沙漠,2005,25（3）:351-355.
[6]杨建平, 丁永建, 陈仁升.长江黄河源区生态环境脆弱性评价初探[J]. 中国沙漠,2007,27（6）:1012-1017.
[7]杨建平,丁永建,刘时银,等.长江黄河源区冰川变化及其对河川径流的影响[J].自然资源学报,2003,18（5）:595-602.
[8]李玉方,马海洲.长江源区生态环境现状及成因研究[J].青海科技,1999,6（4）:26-29.
[9]杨建平,丁永建,陈仁升,等.长江黄河源区多年冻土变化及其生态环境效应[J].山地学报,2004,22（3）:278-285.
[10]Wang Genxu,Cheng Guodong.Eco-environmental changes and causative analysis in the source regions of the Yangtze and Yellow Rivers,China[J].The Environmentalist, 2000,20,221-232.
[11]张森琦,王永贵, 赵永真,等.黄河源区多年冻土退化及其环境反映[J].冰川冻土,2004,26（1）:1-6.
[12]张登山.长江源区土地沙漠化防治对策与措施[J].青海草业,2000,9（4）:15-17.
[13]王绍令,赵林,李述训.青藏高原沙漠化与冻土相互作用的研究[J].中国沙漠,2002,22(1):33-39.
[14]黄桂林.青海三江源区湿地状况及保护对策[J].林业资源管理,2005,4:35-39.
[15]Zhou Huakun,Zhao Xinquan, Tang Yanhong,et al.Alpine grassland degradation and its control in the source region of the Yangtze and Yellow Rivers, china[J].Grassland Science,2005,51:191-203.
[16]Yang Jianping, Ding Yongjian,Chen Rensheng.Spatial and temporal of variations of alpine vegetation cover in the source regions of the Yangtze and Yellow Rivers of the Tibetan Plateau from 1982 to 2001[J].Environ Geol,2006,50:313-322.
[17]Yang Jianping,Ding Yongjian,Chen Rensheng.Climatic causes of ecological and environmental variations in the regions of the Yangtze and Yellow Rivers of china[J].Environ Geol,2007,53:113-121.
[18]吴豪,虞孝感.近四十年来长江源区河流水沙量的变化[J].长江流域资源与环境,2002,11（2）:175-178.
[19]王涛,颜长珍,宋翔.近30 a 内蒙古阿拉善盟不同生态系统土地利用动态遥感监测[J].中国沙漠,2008,28（6）:1001-1004.
[20]吴薇.近50 a来科尔沁地区沙漠化土地的动态监测结果与分析[J].中国沙漠,2003,23（6）:646-651.
[21]刘树林,王涛.浑善达克沙地的土地沙漠化过程研究[J].中国沙漠,2007,27(5):719-724.
[22]程国栋,王根绪.青藏高原江河源区生态环境退化和原因分析[J].地球科学进展,1998,13（增刊）:24-31.
[23]才旦.青海省主要鼠害对草地的危害及其防治[J].草业科学,2006,23（1）:79-81.