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  • 软件名称:干旱区流域土地利用覆被空间转型模拟及热点探测—以黑河流域中游为例
  • 软件大小: 0.00 B
  • 软件评级: ★★★
  • 开 发 商: 李洁, 王福红, 宋晓谕, 石培基, 赵锐峰
  • 软件来源: 《遥感技术与应用》
  • 解压密码:www.gissky.net

资源简介

摘要: 基于黑河中游地区1987、2001、2016年的利用/覆被变化数据,在遥感技术的支持下,利用马尔科夫转移矩阵及土地利用动态测算模型,模拟1987~2001、2001~2016年间黑河中游地区土地利用转型的主要方向及空间分布特征,探测研究期土地利用/覆被变化的热点区域,分析相关驱动因素,并针对发展瓶颈提出相应的对策建议。结果表明:黑河中游地区的生态用地持续减小,而人类活动用地逐渐增加;土地利用变化剧烈的区域主要集中在河流两侧,转型类型主要是水域转为草地,草地转为耕地,未利用地转为建设用地;研究区土地利用转型变化呈现出显著的空间差异,且后期扩张频率及范围明显高于前期;从乡镇尺度来看,土地利用活跃的热点区域主要集中于张掖绿洲综合利用区,但前期热点区域分散、范围小、强度轻,没有形成明显的集中效益,而后期土地利用集约程度显著提高,局部地区呈现出程度深、集约度高的开发趋势。 关键词: 黑河中游;  土地利用/覆被变化;  空间转型;  ')" href="#">热点探测     Abstract: Based on the data of land use/cover change in the middle reaches of the Heihe River in 1987,2001 and 2016,with the support of remote sensing technology,the Markov transfer matrix and land use dynamic estimation model were used to simulate the land use transformation direction and spatial distribution characteristics,detect hotspots of land use/cover change,analyze the relevant driving factors,and propose the countermeasures for development bottlenecks during the study period in the middle reaches of the Heihe River between 1987~2001 and 2001~2016.Its main findings are as follows:the main changes of land use in the middle reaches of Heihe River as the land of human activities gradually increasing,the ecological land decreasing continuously.The areas with sharp changes in land use are mainly concentrated on both sides of the river,the types of transformation are mainly in the conversion of waters into grassland,grassland into cultivated land,and the unused land to construction land;The scope of land use transformation in the study area have obvious spatial differences,the frequency and expansion are significantly higher than the previous period;as a whole,the hot region are located in the oasis area of agriculture in Zhangye,but the early hot region is more dispersed,small,no benefit,the later is concentrated,and has more central tendency in the larger space.

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