期刊论文

CREATING THE DISTRIBUTION FIELD OF EQUILIBRIUM LINE ALTITUDE BASED ON GIS IN THE SOUTHERN OF TIBET AND ANALYZING ITS DISTRIBUTION CHARACTERS

中文

云南地理环境研究

1001-7852

2006

18

3

10-14

10.3969/j.issn.1001-7852.2006.03.003

国家自然科学基金项目＂中国冰川系统结构特征及其变化预测研究＂（40371027）.

本校为第一机构

采用中国冰川编目最新数据资料,求出西藏南部冰川系统中所有冰川样点的计算雪线高度（ELAhc）,并将计算雪线高度导入ArcGIS 9中。在ArcGIS 9中调用ETgoW izard软件生成10’×10’的格网后,对格网内冰川样点的经度、纬度和计算雪线高度进行算术平均,得到每个网格里只有一个虚拟冰川数据。然后在ArcG IS 9中用Kriging插值,生成一定间隔的雪线分布图,即雪线场。经分析,发现它除受全球规律控制外,还能突出地反映西藏南部雪线场的较详尽的分布规律和受地形影响极大的区域特点,具体表现在以下3个方面:（1）雪线从南向北增高,具有反纬度地带性规律;（2）雪线由东向西逐步升高,具有经度地带性规律;（3）...

On the basis of the data out of glacier inventory of china, the equilibrium line attitude （ELAhc） of the southern Tibet glacier system could be obtained. And the ELAhc was added into the software of ArcGIS 9. Then the graticule mesh of 10＇×10＇, which was produced by the software of ETgoWizard in the ArcGIS 9, overlaid the data points in the region of the southern Tibet. And arithmetic average values of all the data points＇ longitude, latitude and ELAhc in every square could be calculated with such software as ArcGIS 9, excel, word, etc. T...