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首页> 外文会议>Remote Sensing for Environmental Monitoring, GIS Applications, and Geology VII; Proceedings of SPIE-The International Society for Optical Engineering; vol.6749 >Analysis of some key issues in selecting suitable scales in monitoring land use in the Tarim River Basin, Xinjiang, China
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Analysis of some key issues in selecting suitable scales in monitoring land use in the Tarim River Basin, Xinjiang, China

机译：塔里木河流域土地利用监测尺度选择中的关键问题分析

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摘要

The selection of suitable scales is one of the key issues in the monitoring of the land use, or more generally, in the study areas of ecology and geography. The scale change trend of land use in the mainstream area of the Tarim River in recent 50 years are lucubrated in this paper by interpreting the land use data in the 1950s, 1970s, 1990s and 2000 with the available maps and RS images. Taking the area of land use as the parameter in selecting the scales, the histograms of the patches in area as are charted. The normalized scale variances under 9 scales are calculated. By reinforcing the calculated results with the landscape indexes including the Shannon-Weaver diversity index, Simpson diversity index and fractal dimensions, the characteristics and scale change trends of the land use in the Tarim River Basin can be summarized as following: (1) The variance of the areas as patches in the region is in great disparity. The patch of sandlands is the largest and its proportion in the year of 2000 was 43.77%; (2) In the course of the study period, the frequency distribution of the areas of patches, sandlands, saline or alkaline lands, forest land and shrub lands in this region was in normal distribution. However, the positions of the peak values and the distribution patterns were different; (3) Normalized scale variance table reveals that the most suitable scale of land use in the region is at 1:50000 or in the range of 1: 50000～l: 100000 in general. The general patterns of the normalized scale variances in the Tarim River Basin in the 4 study periods were similar; (4) Comparing with the normalized scale variances, there were no significant distribution trends of the three landscane indices.
机译：选择合适的尺度是监测土地使用或更重要的是生态学和地理学研究领域的关键问题之一。本文利用可用的地图和遥感影像解释了1950年代，1970年代，1990年代和2000年的土地利用数据，从而阐明了塔里木河近50年主流地区土地利用的尺度变化趋势。以土地利用面积作为选择比例的参数，绘制了该地区斑块的直方图。计算9个标度下的归一化标度方差。通过利用包括香农-韦弗多样性指数，辛普森多样性指数和分形维数在内的景观指数来增强计算结果，塔里木河流域土地利用的特征和尺度变化趋势可以归纳为：（1）方差该地区的斑块区域差距很大。沙地面积最大，2000年为43.77％。 （2）在研究期间，该区域的斑块，沙地，盐碱地，林地和灌木地的频率分布呈正态分布。但是，峰值的位置和分布模式不同。 （3）归一化尺度方差表显示，该区域最合适的土地利用尺度通常为1：50000或1：50000〜l：100000。塔里木河流域在4个研究时期的标准化尺度变化的一般模式是相似的。 （4）与归一化尺度变化相比，三个陆标指数没有明显的分布趋势。

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