艾比湖湖滨隐域性植被与地带性植被交错带土壤盐分对水域面积变化的响应  

Response of Soil Salinity to Change of Water Area in Crisscross Between Foreshore Vegetation and Zonal Vegetation in Aibi Lake

作　　者：曹家睿 陈蜀江[1,2] 范贺娟 陈孟禹 贾翔 黄铁成[2,3] 苗荣 CAO Jia-rui;CHEN Shu-jiang;FAN He-juan;CHEN Meng-yu;JIA Xiang;HUANG Tie-cheng;MIAO Rong(College of Geography and Tourism,Xinjiang Normal University,Xinjiang Urumqi 830054,China;Urumqi Institute of Space Remote Sensing Application,Xinjiang Urumqi 830025,China;Key Laboratory of Precision Forestry,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]新疆师范大学地理科学与旅游学院,新疆乌鲁木齐830054 [2]乌鲁木齐空间遥感应用研究所,新疆乌鲁木齐830025 [3]北京林业大学精准林业重点实验室,北京100083

出　　处：《西南农业学报》2021年第4期862-871,共10页Southwest China Journal of Agricultural Sciences

基　　金：国家重点研发计划(2016YFC0501503)。

摘　　要：【目的】阐明艾比湖湖滨隐域植被与地带性植被交错带土壤盐分受水域面积变化的响应,对艾比湖土壤含盐量定期监测,及时掌握艾比湖水位的变化过程具有重要意义。【方法】基于1995-2019年6期Landsat遥感影像,以新疆艾比湖为靶区,利用遥感技术提取艾比湖水域面积和土壤盐分信息。【结果】(1)受气候和人为原因影响,1995-2019年艾比湖水域面积整体先扩张再缩减趋势,由523.40 km^(2)扩张到724.90 km^(2)后缩减到437.37 km^(2)。(2)由艾比湖周边土壤盐渍化的时空变化分析可知,1995-2019年,艾比湖湖滨土壤盐渍化在时空上发生明显变化,研究区南部及东南部盐渍化程度加剧,湖滨盐渍化区域逐渐向湖心转移。(3)通过1995-2000年和2005-2010年2个阶段对比研究发现,隐域植被与地带性植被交错带土壤盐分指数随艾比湖水域面积的扩大而升高,缩小而降低。【结论】通过分析24年间艾比湖水域面积与研究区土壤盐分的关系,发现东南部交错带中盐分指数变化较为显著。【Objective】It is of great significance to elucidate the response of soil salinity to water area changes in the crisscross of lakeside hidden vegetation and zonal vegetation,and to monitor soil salinity regularly in the crisscross of lakeside hidden vegetation and zonal vegetation,and to grasp the change process of water level in Aibi lake in time.【Method】Based on 6 Landsat remote sensing images from 1995 to 2019,taking Aibi lake in Xinjiang as the target area,the remote sensing technology was used to extract the water area and soil salt content information of Aibi lake.【Result】(i)Under the influence of climate and human factors,the water area of Aibi lake expanded first and then decreased from 523.40 km^(2) to 724.90 km^(2) and then to 437.37 km^(2) from 1995 to 2019.(ii)Based on the analysis of the temporal and spatial changes of salinization around Aibi lake,from 1995 to 2019,the salinization of lakeside soil changed obviously in time and space,and the salinization of lakeside soil increased in the south and southeast of the study area,and the salinization of lakeside soil gradually shifted to the center of the lake.(iii)Through the comparative study of 1995-2000 and 2005-2010,it is found that the soil salt index in the crisscross of hidden vegetation and zonal vegetation increased and decreased with the expansion of the area of Aibi lake.【Conclusion】Based on the analysis of the relationship between the area of Aibi lake and the soil salinity in the study area during the past 24 years,it was found that the salinity index changed significantly in the southeastern crisscross.

关 键 词：艾比湖湖滨 植被交错带 土壤盐渍化 水域面积 遥感技术 

分 类 号：S156.4[农业科学—土壤学]