LIU Zheng-jia,SHAO Quan-qin.Vegetation Coverage Change and Its Response to Climate Change in Three-River Headwaters Region[J].Research of Soil and Water Conservation,2014,21(06):334-339.
三江源地区植被覆盖度变化及其与气候因子的关系
- Title:
- Vegetation Coverage Change and Its Response to Climate Change in Three-River Headwaters Region
- Keywords:
- remote sensing; NDVI; dimidiate pixel model; alpine grasslands; Three-River headwaters region
- 分类号:
- TP79
- 摘要:
- 为揭示气候变化对三江源地区草地生态系统的影响及适应机制，研究以SPOT-VGT为基础数据，利用像元二分模型估算了三江源地区1998—2012年的植被覆盖度，分析了年最大覆盖度的变异特征，并对植被覆盖度与气候因子之间的响应关系进行了深入探讨。结果表明：在区域尺度上，15 a来研究区生长季植被覆盖度呈极显著增加的趋势（P < 0.01），平均每年增加0.004。在草地生态系统类型上，高寒草甸植被覆盖度与生长季温度的相关关系更加密切（r=0.802，P < 0.01）；高寒草原植被覆盖度与生长季温度呈显著相关关系（r=0.515，P < 0.05）。与生长季降水量相比较，5—7月降水量对高寒草原植被覆盖度变化的影响更加关键，但在高寒草甸上却不存在这种差异。
- Abstract:
- Vegetation plays a pivotal role in the interaction between the biosphere and the atmosphere. Previous studies have focused on monitoring changes in the fractional vegetation cover (FVC) on account of its important role in regulating the terrestrial carbon and water cycling during the past several decades. To reveal the effects and adaptation mechanism of climate change to grassland ecosystem in Three-River headwaters region (TRH), we firstly estimated FVC using SPOT-VGT datasets and dimidiate pixel model in TRH from 1998 to 2012. Secondly, the variation characteristics of annual FVC were analyzed. Discussions were finally carried out for the response on FVC to climate factors. The results showed that FVC of TRH during the past 15 years significantly increased (P < 0.01) in the growing season, with an annual increase of 0.004 at the regional scale. For the types of alpine grassland ecosystem, the relationship of FVC with temperature of the growing season in alpine meadow was better than that in alpine steppe (for alpine meadow: r=0.802, P < 0.01; for alpine steppe: r=0.515, P < 0.05). Compared precipitation in May-July with precipitation in growing season, the former had the more key impact on FVC in alpine steppe, but there were hardly any differences for alpine meadow.
参考文献/References:
[1] Piao S L, Wang X H, Ciais P, et al. Changes in satellite-derived vegetation growth trend in temperate and boreal Eurasia from 1982 to 2006[J]. Global Change Biology,2011,17(10):3228-3239.
[2] Zhang G L, Zhang Y J, Dong J W, et al. Green-up dates in the Tibetan Plateau have continuously advanced from 1982 to 2011[J]. Proceeding of the National Academy of Sciences of the United States of America,2012,110(11):4309-4314.
[3] 李小亚,张勃,靳自宝.基于MODIS-NDVI的甘肃河东地区植被覆盖度动态监测[J].水土保持研究,2013,20(1):112-115.
[4] 王兮之,梁钊雄,周显辉,等.黄河源区玛曲县植被覆盖度及其气候变化研究[J].水土保持研究,2012,19(2):57-65.
[5] 刘纪远,邵全琴,延晓冬,等.土地利用变化对全球气候影响的研究进展与方法初探[J].地球科学进展,2011,26(10):1015-1022.
[6] 邵全琴,赵志平,刘纪远,等.近30a来三江源地区土地覆被与宏观生态变化特征[J].地理研究,2010,29(8):1439-1451.
[7] 刘纪远,徐新良,邵全琴.近30a来青海三江源地区草地退化的时空特征[J].地理学报,2008,63(4):364-376.
[8] 李辉霞,刘国华,傅伯杰.基于NDVI的三江源地区植被生长对气候变化和人类活动的响应研究[J].生态学报,2011,31(19):5495-5504.
[9] Carlson T N, Ripley D A. On the relation between NDVI, fractional vegetation cover, and leaf area index[J]. Remote Sensing of Environment,1997,62(3):241-252.
[10] 刘正佳,于兴修,李蕾,等.基于SRP概念模型的沂蒙山区生态环境脆弱性评价[J].应用生态学报,2011,22(8):2084-2090.
[11] 韦振锋,任志远,张翀.近12a广西植被覆盖与降水和气温的时空响应特征[J].水土保持研究,2013,20(5):33-44.
[12] 王灿,任志远,张翀.陕北地区NDVI对水热条件年内变化的响应及其空间特征[J].水土保持研究,2014,21(1):173-182.
[13] 陈琼,周强,张海峰,等.三江源地区基于植被生长的NDVI对气候因子响应的差异性分析[J].生态环境学报,2010,19(6):1284-1289.
[14] 唐红玉,肖风劲,张强,等.三江源植被变化及其气候变化的响应[J].气候变化研究进展,2006,2(4):177-180.
[15] 于秀娟,燕琴,刘正军,等.三江源区植被覆盖度的定量估算与动态变化研究[J].长江流域资源与环境,2013,22(1):66-74.
[16] 刘正佳,于兴修,王丝丝,等.薄盘光滑样条插值中三种协变量方法的降水量插值精度比较[J].地理科学进展,2012,31(1):56-62.
[17] Hutchinson M, Mckenney D, Lawrence K, et al. Development and Testing of Canada-Wide InterPolated Spatial Models of Daily Minimum-Maximum Temperature and Precipitation for 1961-2003[J]. Journal of Applied Meteorology and Climatology,2009,48(4):725-741.
[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化分析[J].资源科学,2010,32(7):1417-1424.
[19] Piao S L, Cui M D, Chen A P, et al. Altitude and temperature dependence of change in the spring vegetation green-up date from 1982 to 2006 in the Qinghai-Xizang Plateau[J]. Agricultural and Forest Meteorology,2011,151(12):1599-1608.
[20] Piao S L, Ciais P, Friedlingstein P, et al. Spatiotemporal pattern of terrestrial carbon cycle during the 20th century[J]. Global Biogeochemical Cycles,2009,23(4):GB4026.
相似文献/References:
[1]田洪阵,杨太保,刘沁萍.近40年来冷龙岭地区冰川退缩和气候变化的关系[J].水土保持研究,2012,19(05):34.
TIAN Hong-zhen,YANG Tai-bao,LIU Qin-ping.Relationship between Climate Change and Glacier Retreat over the Last 40 Years in Lenglongling Range of Eastern Qilian Mountains[J].Research of Soil and Water Conservation,2012,19(06):34.
[2]李亮,翟进,史海滨.基于TM影像的河套灌区区域蒸散发研究[J].水土保持研究,2012,19(05):248.
LI Liang,ZHAI Jin,SHI Hai-bin.Study of Regional Evapotranspiration of Hetao Irrigationg District Based on TM Images[J].Research of Soil and Water Conservation,2012,19(06):248.
[3]陈昊,吴攀,刘沛,等.麻窝山小流域石漠化景观格局变化特征[J].水土保持研究,2012,19(04):239.
CHEN Hao,WU Pan,LIU Pei,et al.Landscape Patterns of Rocky Desertification in the Mawoshan Karst Basin of Northwest Guizhou Province[J].Research of Soil and Water Conservation,2012,19(06):239.
[4]贺中华,陈晓翔,梁虹,等.基于NDVI的喀斯特水资源遥感定量监测及分析——以贵州省为例[J].水土保持研究,2012,19(03):161.
HE Zhong-hua,CHEN Xiao-xiang,LIANG Hong,et al.Quantitative Remote Sensing Monitoring and Analysis of Karst Water Resources Based on NDVI-Taking Guizhou Province as a Case[J].Research of Soil and Water Conservation,2012,19(06):161.
[5]赵银兵,倪忠云,陈陵康,等.西藏曲水-桑日地区1988-2009年土地利用景观格局演变研究[J].水土保持研究,2012,19(03):180.
ZHAO Yin-bing,CHEN Ling-kang,NAN Xi,et al.Study on Landscape Evolution in Qushui-Sangri Area of Tibet from 1988 to 2009[J].Research of Soil and Water Conservation,2012,19(06):180.
[6]李锐,赵永安,宋桂琴,等.固原上黄土地资源信息系统及其应用[J].水土保持研究,1992,(02):26.
Li Rui,Zhao Yongan,Song Guiqin,et al.LAND RESOURCES INFORMATION SYSTEM OF SHANGHUANG IN GUYUAN COUNTY[J].Research of Soil and Water Conservation,1992,(06):26.
[7]刘静.数字化地形模型（DTM）在水土保持中的应用[J].水土保持研究,1992,(02):96.
Liu Jeng.ESTABLSHING AND APPLICATION OF DTM FOR SOIL AND WATER CONSERVATION[J].Research of Soil and Water Conservation,1992,(06):96.
[8]全志杰,王成吉,毛晓利,等.毛乌素沙地西部区土地沙漠化动态遥感研究──以盐池县为例[J].水土保持研究,1995,2(02):158.
Quan Zhijie,Wang Chengji,Mao Xiaoli,et al.The Remote Sensing Study of Developments of Desertize of Soil of West Area of Maowusu Sand Soil──Taking the Yanchi County as an Example[J].Research of Soil and Water Conservation,1995,2(06):158.
[9]陈明华,黄炎和.福鼎市土壤侵蚀的遥感监测研究[J].水土保持研究,1998,5(02):136.
Chen Mnghua,Huang Yanhe.Study on Monitoring of Soil Erosion by Using Remote Sensing Technology in Fuding City[J].Research of Soil and Water Conservation,1998,5(06):136.
[10]陈永宝,陈志伟,郭志民.应用GIS实现水土流失定量遥感监测[J].水土保持研究,1998,5(02):152.
Chen Yongbao,Chen Zhiwei,Guo Zhimin.The Quantitative Remote Sensing Monitoring of Soil and Water Loss by Using GIS[J].Research of Soil and Water Conservation,1998,5(06):152.
[11]杨勤科,罗万勤,马宏斌,等.区域水土流失植被因子的遥感提取[J].水土保持研究,2006,13(05):267.
YANG Qing-ke,LUO Wan-qin,MA Hong-bin,et al.NDVI Extraction of Regional Soil Erosion Based on Remate Sensing[J].Research of Soil and Water Conservation,2006,13(06):267.
[12]孙久虎,刘晓萌,李佑钢,等.北运河地区植被覆盖的遥感估算及变化分析[J].水土保持研究,2006,13(06):97.
SUN Jiu-hu,LIU Xiao-meng,LI You-gang,et al.Estimation of Vegetation Fraction in Beiyunhe District by Remote Sensing[J].Research of Soil and Water Conservation,2006,13(06):97.
[13]夏照华,张克斌,李瑞,等.基于NDVI的农牧交错区植被覆盖度变化研究——以宁夏盐池县为例[J].水土保持研究,2006,13(06):178.
XIA Zhao-hua,ZHANG Ke-bin,LI Rui,et al.Study on the Change of Vegetation Fraction in Agro-pastoral Transition Area Based on NDVI——A Case Study in Yanchi County, Ningxia[J].Research of Soil and Water Conservation,2006,13(06):178.
备注/Memo
收稿日期:2013-11-29;改回日期:2014-03-20。
基金项目:国家科技支撑”十二五”项目（2013 BAC03 B04）；国家自然科学资助项目（41371409）；国家”973”计划项目（2010 CB950902）
作者简介:刘正佳(1986-),男(回族),山东青州人,博士研究生,主要从事LUCC过程和生态模型研究,E-mail:liuzj@lreis.ac.cn
通讯作者:邵全琴(1962-),女,江苏常州人,研究员,博士生导师,主要从事GIS应用与生态信息研究,E-mail:shaoqq@lreis.ac.cn