2000—2010年长江上游林草覆被变化与水土流失研究
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- 英文论文题名：Forest and Grass cover changes and soil erosion in Upper Yangtze River watershed from 2000 to 2010
- 论文作者：孙金华 ; 张志苗 ; 王维 ; 国巧真
- 英文论文作者：Sun Jinhua ; Zhang Zhimiao ; Wang Wei ; Guo Qiaozhen ; Institute of environmental information ; Chinese Research Academy of Environmental Sciences ; School of Geology and Geomatics ; Tianjin Chengjian University
- 年：2015
- 作者机构：中国环境科学研究院环境信息研究所;天津城建大学地质与测绘学院;
- 论文关键词：遥感影像(Landsat TM) ; 土地覆被 ; 林草覆被变化 ; 土壤侵蚀
- 英文论文关键词：remote sensing image(Landsat TM) ; land cover ; forest and grass vegetation ; soil erosion
- 会议召开时间：2015-09-01
- 会议录名称：2015海峡两岸水土保持学术研讨会论文集（上）
- 英文会议录名称：Proceedings of Cross-strait Symposium on Soil and Water Conservation 2015
- 语种：中文
- 分类号：S157
- 学会代码：OGSJ
- 会议名称：2015海峡两岸水土保持学术研讨会
- 会议地点：中国山西太原
- 主办单位：中国水土保持学会、台湾中华水土保持学会
- 学会名称：中国水土保持学会
- 页数：7
- 文件大小：2745k
- 原文格式：O
- 会议级别：全国
摘要
本文采用Landsat TM遥感影像,基于面向对象自动分类结合地面调查等方法,提取长江上游的2000、2005、2010年三期土地覆被信息,分析十年间长江上游林地草地面积、植被覆盖度指数(NDVI)、土壤侵蚀量量与侵蚀强度的变化及空间分布特征。结果表明,长江上游林地草地面积总体上呈小幅增加趋势,少数局部地区面积下降,增加的林地中一半以上为园林地;上游林地和草地NDVI指数总体升高,但大渡河等局部区域NDVI指数明显下降;土壤侵蚀强度为中度以上的区域面积总体上有所减少,但大渡河等局部区域中度以上侵蚀面积增加、土壤流失加剧;土壤侵蚀加剧的区域分布与林地转出(损失)、草地转出(损失)以及植被覆盖指数(NDVI)下降的区域分布具有一致性,表明林地和草地植被转出与退化是导致土壤侵蚀程度加剧的重要因素。
Supported by object-oriented classification,the land cover data of upper Yangtze River watershed have been produced using remote sensing images(Landsat TM),combined with large number of field investigation data.This study has analyzed the changes of the area of forest and grass land,and the vegetation cover index(NDVI),and soil erosion intensity,and then study the relationship between those changes and distribution.Results have showed that;the area of forest and grass land slightly increased in upper Yangtze River watershed as a whole,few region decreased,approximately above 50 percents of forest new- added is orchard planted;To the whole upper watershed,the forest and grass vegetation cover index(NDVI) have been improved,and the area of moderate intensity or above soil erosion has been decreased,but NDVI and soil erosion have got worse at some regions such as Dadu River;The regions of soil erosion got worse is in accordance with the distribution of lost forest and grass,and the decreased vegetation cover index(NDVI) of forest and grass,the degradation of forest land and grass vegetation may be an important factor leading to soil erosion.
Supported by object-oriented classification,the land cover data of upper Yangtze River watershed have been produced using remote sensing images(Landsat TM),combined with large number of field investigation data.This study has analyzed the changes of the area of forest and grass land,and the vegetation cover index(NDVI),and soil erosion intensity,and then study the relationship between those changes and distribution.Results have showed that;the area of forest and grass land slightly increased in upper Yangtze River watershed as a whole,few region decreased,approximately above 50 percents of forest new- added is orchard planted;To the whole upper watershed,the forest and grass vegetation cover index(NDVI) have been improved,and the area of moderate intensity or above soil erosion has been decreased,but NDVI and soil erosion have got worse at some regions such as Dadu River;The regions of soil erosion got worse is in accordance with the distribution of lost forest and grass,and the decreased vegetation cover index(NDVI) of forest and grass,the degradation of forest land and grass vegetation may be an important factor leading to soil erosion.
引文
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[17]Xian G,Homer C,Fry J.Updating the 2001 National Land-Cover Data base land-cover classification to 2006 by using land sat imagery change detection methods.Remote Sensing of Environment,2009,113(6):1133—1147
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[19]OUSEJW,HAASRH,SCHELUA,et al.Monitoring vegetation systems in the great plains with ERTS[C]//Third ERTS Symposium,NASA:Washington DC,1973:309-317
[20]郭伟伟,王秀兰,冯仲科,等.基于NDVI的植被覆盖度变化的研究与分析——以河北省张家口市为例[J].测绘与空间地理信息,2012,35(7):64-68
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[22]傅世锋,查轩.基于GIS和USLE的东圳库区土壤侵蚀量预测研究[J].地球信息科学,2008,10(3):390-395
[2]查轩,唐克丽,张科利,等.植被对土壤特性及土壤侵蚀的影响研究[J].水土保持学报,1992,6(2):52-59
[3]张光辉,梁一民.植被覆盖度对水土保持功效影响的研究综述[J].水土保持研究,1996,3(2):104-110
[4]凤霞.颜亮东,吴素霞,等.江河源地区草地植被变化特征及水土保持功能评价[J].草业科学,2007.(7):6-9
[5]杜自强,王建,陈正华等.黑河中上游典型地区草地植被变化及其生态功能损失分析-以山丹县为例[J].西北植物学报,2006,26(4):798-804
[6]刘培娟,马文贵,杨吉华等.鲁中南山区径流小区不同坡度条件下4种植被的水土流失规律研究[J].水土保持研究,2007,14(06):338-340
[7]魏天兴.黄土区小流域侵蚀泥沙来源与植被防止侵蚀作用研究[J].北京林业大学学报,2002.24(5/6):19-24
[8]魏天兴,余新晓,朱金兆.山西西南部黄土区林地枯落物截持降水的研究[J].北京林业大学学报,1998,20(6):1-5
[9]陈治谏.长江上游的战略地位与生态环境功能[J].山地学报,2000,18(3):258-262
[10]任平,程武学,洪步庭,等.基于PSDR理论框架下长江上游生态系统退化威胁评价与空间分布研究[J].地理科学,2013,33(2):189-194
[111史立人.长江中上游水土流失的综合防治[J].中国水土保持,2002,(09):2-4
[12]崔鹏.王道杰,范建容,等.长江上游及西南诸河区水土流失现状与综合治理对策[J].中国水土保持,2008,6(1):43-50
[13]王锡桐,刘志文,杨庆媛.建设长江上游生态屏障对策研究[M].北京:中国农业出版社,2003
[14]伍星,沈珍瑶,刘瑞民,等.土地利用变化对长江上游生态系统服务价值的影响[J].农业工程学报,2009,25(8):236-241
[15]吴炳方,苑全治,颜长珍.等.二十一世纪前十年的中国土地覆盖变化[J].第四纪研究,2014,34(4):724-728
[16]宋翔,颜长珍.基于知识库的像斑光谱向量相似度土地覆盖变化检测方法[J].生态学报,2014,34(24):7176-7180
[17]Xian G,Homer C,Fry J.Updating the 2001 National Land-Cover Data base land-cover classification to 2006 by using land sat imagery change detection methods.Remote Sensing of Environment,2009,113(6):1133—1147
[18]吴云,曾源,赵炎等.基于MODIS数据的海河流域植被覆盖度估算及动态变分析.资源科学,2010,32(7):1417-1424
[19]OUSEJW,HAASRH,SCHELUA,et al.Monitoring vegetation systems in the great plains with ERTS[C]//Third ERTS Symposium,NASA:Washington DC,1973:309-317
[20]郭伟伟,王秀兰,冯仲科,等.基于NDVI的植被覆盖度变化的研究与分析——以河北省张家口市为例[J].测绘与空间地理信息,2012,35(7):64-68
[21]ischmeier W H,Smith DD.Predicting rainfall-erosion losses from cropland east of the Rocky Mountains[Z].USDA Agricultural Handbook,1965
[22]傅世锋,查轩.基于GIS和USLE的东圳库区土壤侵蚀量预测研究[J].地球信息科学,2008,10(3):390-395