【摘要】：針對區(qū)域地面沉降空間演化格局分析較少問題,選用小基線雷達干涉測量技術(SBAS-InSAR)獲取了北京典型地區(qū)的地面沉降數(shù)據(jù),并利用全局Moran′s I和局部Moran′s I指數(shù)對研究區(qū)地面沉降格局特征進行分析。結果表明,研究區(qū)地面沉降速率最大值為-110mm/a,中部、東南部沉降嚴重,其他地區(qū)相對輕微;該區(qū)域地面沉降全局空間自相關十分顯著,全局Moran′s I指數(shù)達到了0.8(p=0.001),局部空間格局包括3個亞區(qū),分別是高集聚區(qū)、低集聚區(qū)以及非相關區(qū);熱點分析結果表明地面沉降存在過渡帶,過渡帶不僅是地面沉降的未來發(fā)展方向,同時還存在不均勻地面沉降,是未來地面沉降防治的重點關注區(qū)域。
[Abstract]:In view of the few problems in analyzing the spatial evolution pattern of regional land subsidence, small baseline radar interferometry (SBAS-InSAR) is used to obtain the ground subsidence data in typical areas of Beijing. The global Moran's I and local Moran's I indices are used to analyze the characteristics of land subsidence pattern in the study area. The results show that the maximum land subsidence rate is -110 mm / a in the study area. The global spatial autocorrelation of land subsidence in this area is very significant, the global Moran's I index is 0. 8 (p0. 001), and the local spatial pattern includes three subregions, namely, high concentration area, low concentration area and non related area. The results of hot spot analysis show that there is a transitional zone, which is not only the future development direction of land subsidence, but also exists uneven land subsidence, which is the key area of land subsidence prevention and control in the future.
【作者單位】： 三維信息獲取與應用教育部重點實驗室;城市環(huán)境過程與數(shù)字模擬國家重點實驗室培育基地;首都師范大學資源環(huán)境與旅游學院;北京育英學校;
【基金】：國家自然科學基金重點項目(41130744/D0107);國家自然科學基金面上項目(41171335/D010702);國家自然科學基金(D010702/4140010982)
【分類號】：P642.26
，

本文編號：2294817