Spatiotemporal patterns and characteristics of land-use change in China during 2010–2015

Abstract

Land use/cover change is an important theme on the impacts of human activities on the earth systems and global environmental change. National land-use changes of China during 2010-2015 were acquired by the digital interpretation method using the high-resolution remotely sensed images, e.g. the Landsat 8 OLI, GF-2 remote sensing images. The spatiotemporal characteristics of land-use changes across China during 2010-2015 were revealed by the indexes of dynamic degree model, annual land-use changes ratio etc. The results indicated that the built-up land increased by 24.6×10 3 km 2 while the cropland decreased by 4.9×10 3 km 2 , and the total area of woodland and grassland decreased by 16.4×10 3 km 2. The spatial pattern of land-use changes in China during 2010-2015 was concordant with that of the period 2000-2010. Specially, new characteristics of land-use changes emerged in different regions of China in 2010-2015. The built-up land in eastern China expanded continually, and the total area of cropland decreased, both at decreasing rates. The rates of built-up land expansion and cropland shrinkage were accelerated in central China. The rates of built-up land expansion and cropland growth increased in western China, while the decreasing rate of woodland and grassland accelerated. In northeastern China, built-up land expansion slowed continually, and cropland area increased slightly accompanied by the conversions between paddy land and dry land. Besides, woodland and grassland area decreased in northeastern China. The characteristics of land-use changes in eastern China were essentially consistent with the spatial govern and control requirements of the optimal development zones and key development zones according to the Major Function-oriented Zones Planning implemented during the 12th Five-Year Plan (2011-2015). It was a serious challenge for the central government of China to effectively protect the reasonable layout of land use types dominated with the key ecological function zones and agricultural production zones in central

Identifying Urban Flood Regulation Priority Areas in Beijing Based on an Ecosystem Services Approach

“…The datasets include six classes-cropland, forest, grassland, water body, built-up land, and unused land-and 25 subclasses. The accuracies of the six classes of CLUDs were higher than 90%, which meets the requirement of the user mapping accuracy at 1:1,000,000 scale [46,47].…”

Tracking spatial–temporal landscape changes of impervious surface areas, bare lands, and inundation areas in China during 2001–2017

“…For many applications, detailed information regarding on the specific landscape changes instead of change/no change areas is needed. Postclassification comparison is one primary approach to derive this type of from‐to‐change information (Kuang et al, ; Liu et al, ; Ning et al, ; Pouliot et al, ). Great progresses have been made in the landscape mapping fields in recent two decades, particularly these significant contributions in monitoring and understanding the rapid urban expansion process in China (Guo, Lu, & Kuang, ; Kuang et al, ; Kuang et al, ; Liu et al, ; Liu et al, ; Lu et al, ; Ning et al, ; Pouliot et al, ).…”

“…Postclassification comparison is one primary approach to derive this type of from‐to‐change information (Kuang et al, ; Liu et al, ; Ning et al, ; Pouliot et al, ). Great progresses have been made in the landscape mapping fields in recent two decades, particularly these significant contributions in monitoring and understanding the rapid urban expansion process in China (Guo, Lu, & Kuang, ; Kuang et al, ; Kuang et al, ; Liu et al, ; Liu et al, ; Lu et al, ; Ning et al, ; Pouliot et al, ). This study borrowed their ideas and learned from them in order to spatiotemporally tracking multiple landscape changes (Guo et al, ; Kuang et al, ; Kuang et al, ; Liu et al, ; Liu et al, ; Lu et al, ; Lu, Li, Kuang, & Moran, ; Ning et al, ; Pouliot et al, ).…”

“…A shift from yearly land cover mapping to spatiotemporally continuous tracking landscape changes is needed (Wulder et al, ). The AAUDI approach provided a unique strategy for simultaneously tracking long‐term urbanization, devegetation, and inundation with fairly high spatiotemporal consistency, given that there are a lot of multiple year land cover products such as the impervious surface areas (Liu et al, ; Ning et al, ), deforestation (Hansen et al, ), and inundation mapping products (Ji et al, ; Pekel et al, ).…”

“…Considerate research efforts have addressed landscape changes from local to national scales in China (Chen et al, ; Gong et al, ; Kuang, Liu, Zhang, Lu, & Xiang, ; Kuang, Yang, & Yan, ; Ning et al, ; Shi, Taubenböck, Zhang, Liu, & Wurm, ; Sun & Zhao, ; Zhang & Weng, ). China contributed 21.49% of the world's total expansion of urbanization from 1990 to 2010 (Liu et al, ).…”