2000—2020年黄河流域土地生态质量及其变化趋势预测  

Land ecological quality and its change trend prediction in the Yellow River Basin from 2000 to 2020

作　　者：刘佳琪 周璐红[1,2] 席小雅 LIU Jiaqi;ZHOU Luhong;XI Xiaoya(School of Land Engineering,Chang’an University,Xi’an 710054,Shaanxi,China;Key Laboratory of Land Improvement of Shaanxi Province,Xi’an 710054,Shaanxi,China)

机构地区：[1]长安大学土地工程学院,陕西西安710054 [2]陕西省土地整治重点实验室,陕西西安710054

出　　处：《干旱区地理》2023年第10期1654-1662,共9页Arid Land Geography

基　　金：陕西省土地整治重点实验室开放基金(2019-JC02);长安大学研究生教育教学改革资助项目(300103120050)资助。

摘　　要：黄河流域生态保护对我国高质量发展具有重要战略意义。从生态本底、生态结构、生态效益、生态胁迫4方面构建土地生态质量评价指标体系,基于理想点法对2000、2005、2010、2015、2020年黄河流域土地生态质量进行评价,结合Slope趋势预测及F显著性检验模型对2025年黄河流域土地生态质量变化趋势进行预测,并对预测结果进行冷热点分析,以探究2025年流域土地生态质量发展趋势集聚区。结果表明:(1)2000—2020年黄河流域土地生态质量呈东南部、西南部整体高于东北部、西北部的分布特征。(2)2000—2020年黄河流域土地生态质量整体较低,但呈自东南部向西北部逐渐好转的态势。(3)2000年黄河流域土地生态本底质量较差的中上游区域质量上升空间大,好转现象明显。(4)2025年黄河流域土地生态质量呈上升趋势的区域主要集聚在流域甘肃段东部和中部、宁夏段南部,位于黄土高原生态功能保护区;土地生态质量可能会下降的区域,部分集聚于流域青海段西南部的黄河源生态功能保护区,部分集聚于流域内蒙古段西北部。黄河流域西北部要持续推进生态治理,为区域高质量发展奠定生态基础,流域东南部在加强生态保护和监测的同时继续推进经济发展,实现经济与生态互相促进的良性发展。This paper constructs an index system for evaluating land ecological quality in the Yellow River Basin in terms of ecological basis,ecological structures,ecological benefits,ecological stresses,and evaluates the land ecological quality of the basin from 2000 to 2020 by using the ideal point method.On this basis,we combined the Slope trend prediction model and F significance test model to predict the change trends of land ecological quality in the basin in 2025,and analyzed the clustering characteristics of the predicted change trends.The results show that:(1)The land ecological quality in the southeastern and southwestern parts of the Yellow River Basin is higher than that in the northeastern and northwestern parts.(2)The overall land ecological quality of the Yellow River Basin is low from 2000 to 2020,but shows a gradual improvement from the southeast to the northwest.(3)The quality of the middle and upper reaches of the Yellow River Basin,where the background land ecological quality is poor,has much room for improvement.(4)Land ecological quality in the Yellow River Basin may rise in 2025 is mainly concentrated in the eastern and central part of the Gansu section and the southern part of the Ningxia section of the basin,located in the Loess Plateau ecological function protection zone.The cases where the ecological quality of land is likely to decline are partly clustered in the southwestern part of the Qinghai section of the basin in the Yellow River source ecological function reserve,and partly in the northwestern part of the Inner Mongolia section of the basin.The northwestern part of the Yellow River Basin should continue to promote ecological treatment,laying the ecological foundation for regional high-quality development,and the southeastern part of the basin should continue to promote economic development while strengthening ecological protection and monitoring,so as to achieve the benign development of mutual promotion of economy and ecology.

关 键 词：土地生态质量 理想点法 Slope趋势预测 黄河流域 

分 类 号：X321[环境科学与工程—环境工程]