[1]韩 芳,张百平*,李西灿,等.青藏高原山体效应的遥感估算及其生态效应分析[J].山地学报,2016,(06):788-798.[doi:10.16089/j.cnki.1008-2786.000187]
　HAN Fang,ZHANG Baiping,LI Xican,et al.MODIS-based Estimation of Mass Elevation Effect in the Tibetan Plateau and Its Ecological Effect[J].Mountain Research,2016,(06):788-798.[doi:10.16089/j.cnki.1008-2786.000187]
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青藏高原山体效应的遥感估算及其生态效应分析()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2016年06期
页码:
788-798
栏目:
山地信息技术
出版日期:
2016-12-08

文章信息/Info

Title:
MODIS-based Estimation of Mass Elevation Effect in the Tibetan Plateau and Its Ecological Effect
文章编号:
1108-2786-(2016)6-788-11
作者:
韩 芳1; 张百平2*; 李西灿1; 梁 勇1; 谭 靖3; 张 朔2
1.山东农业大学信息科学与工程学院,泰安271018;
2.中国科学院地理科学与资源研究所,资源与环境信息系统国家重点实验室,北京100101;
3.北京航天泰坦科技股份有限公司,北京100083
Author(s):
HAN Fang1;  ZHANG Baiping2;  LI Xican1;  LIANG Yong1;  TAN Jing3;  ZHANG Shuo
1.College of Information Science and Engineering, Shandong Agricultural University, Tai'an 271018, Shandong, China;
2.Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing 100101, China;
3.Beijing Oriental TITAN Technology Co.,LTD, Beijing 100083, China
关键词:
山体效应; 估算; MODISMOD11C3; 林线; 雪线; 青藏高原
Keywords:
Mass Elevation Effect;  Estimation;  MODIS MOD11C3;  Timberline;  Snowline;  Tibetan Plateau
分类号:
TP79
DOI:
10.16089/j.cnki.1008-2786.000187
文献标志码:
A
摘要:
山体效应是隆起的山体所产生的热力效应,其结果之一就是相同垂直带界限自外围向内部有升高的趋势。本文结合MOD11C3地表温度产品和地面144个气象台站实测气象数据,估算青藏高原内外相同高度上的温差(也即高原山体效应值)。具体结论如下:(1)最大温差(10.04℃~11.70℃)出现在高原中南部,即雅鲁藏布江以北藏北高原以南。由此为核心向北、向东、向西均逐渐减小;(2)数据点上同高度内外温差与局部基面高度有紧密关系,基面高度每抬升100m,温差增加约0.051℃,并有加速增大的趋势;(3)山体基面高度与山体效应存在明显的线性关系,其决定系数R2高达0.5306。但山体基面高度最高的区域山体效应并非最大,说明还有其他因子影响山体效应的大小,可能的因子包括大气湿度、纬度、地形开阔程度等,在建立山体效应数字模型时必须加以考虑;(4)高原山体效应对雪线分布高度的抬升作用更甚于其对林线。山体效应估值最大的区域,分布着6000m以上极高雪线;最高林线(4900m)分布于本研究中山体效应估算值较低的相对多雨区,因为林线的发育还要求一定的降水量。
Abstract:
This paper deals with the magnitude and distribution pattern of Mass Elevation Effect(MEE)in the Tibetan Plateau by comparing temperature differences between the inner and outer parts of the Plateau(abbreviated as inner-outer Plateau)at the same elevation. It utilized MODIS land surface temperature product(MOD11C3), observed meteorological data, and 57 partitioned data with different Mountain Basal Elevations(MBE, extracted from ASTER GDEM)for estimation of temperature differences. MOD11C3 data were calibrated with observed temperatures from 144 meteorological stations in the Plateau. For temperature values collected at stations out of the Plateau, they were converted to the corresponding free-air temperatures exactly at the same elevation as the inner-Plateau stations based on lapse-rate of air temperature. Temperature differences between the inner-outer Plateaus were defined as MEE value. Main conclusions are as follows:(1)the broadest temperature difference(10.04℃～11.70℃)between the inner-outer Plateaus was located in the middle south of the Plateau, between the Yarlung Zangbo river and the Qiangtang Plateau;(2)the simple average MBE of the Plateau was 3 625.16 m, and the average inner-outer temperature difference was 2.482℃;(3)MBE had a close relationship with temperature difference, with a coefficient of determination(R2)as high as 0.5306. However, the highest MEE did not occur in the regions with the highest MBE. This means that other unknowns also play an important role in influencing the magnitude of MEE, and they must be taken into account in the future study;(4)the impact of MEE on snowline elevation appeared to be larger than it did on timberline in the Plateau. The place where the highest snowline(6 000～6 200 m)in the northern hemisphere occurs was just the location where the highest MEE was estimated(5.01～11.70℃). The highest timberline(4 900 m)of the northern hemisphere did not developed in the highest MEE areas, instead at where the high MEE was characterized with a certain of precipitation. An interpretation for the abnormality was suggested that the development of timberline should require a certain amount of rainfall(at least 350 mm)in the high mountains.

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备注/Memo

备注/Memo:
基金项目(Foundation item):国家自然科学基金(41401111); 安徽省自然科学基金(1208085QD78); 北京市科技新星计划(Z131101000413086); 山东农业大学青年创新基金 [National Natural Science Foundation of China(41401111); Natural Science Foundation of Anhui Province(1208085QD78); Beijing Nova Program(Z131101000413086); Young Innovation Foundation of Shandong Agricultural University]
作者简介(Biography):韩芳(1981-),女,讲师,理学博士,主要研究方向为山地生态,RS和GIS应用 [Han Fang(1981-), Female, lecture, Ph.D., mainly engaged in mountain ecology and application of GIS and RS] Email: hanfah@163.com
*通信作者(Corresponding author):张百平(1963-),男,研究员,博士生导师,研究领域为山地生态与GIS应用 [Zhang Baiping(1963-), male, Professor in mountain ecology and applied GIS] E-mail: zhangbp@lreis.ac.cn
更新日期/Last Update: 2016-11-30