Geographical Science Research 地理科学研究, 2019, 8(2), 234-242
Published Online May 2019 in Hans. http://www.hanspub.org/journal/gser https://doi.org/10.12677/gser.2019.82025
Spatio-Temporal Dynamics of Built-Up Land Expansion and Cropland Loss in Shandong Province
Meng Wang*, Xiaofang Sun
School of Geography & Tourism, Qufu Normal University, Rizhao Shandong
ndthrd
Received: May 2, 2019; accepted: May 16, 2019; published: May 23, 2019
Abstract
Since the 1980s, the quantity and quality of built-up land and cropland of Shandong Province have changed greatly under the background of rapid economic growth. The shrink of cropland has caused the decline of grain production and brought stress to food security. In this study, land use data from 1985 to 2015 derived from remote sensing imagery were used to analyze the spa-tio-temporal dynamics of built-up and cropland quantitatively. The main spatial characteristics of change in built-up land and cropland included: 1) The built-up land area of Shandong Province in-creased continuously during 1985 and 2015, from 16,925 km2 in 1985 to 101,280 km2 in 2015; 2) During 1985 and 2015, the area converted from cropland to forest, grassland, water area, built-up land and unused land are 53 km2, 15 km2, 527 km2, 4453 km2, 16 km2 respectively. Thus 87.9% of reduced cropland was converted to built-up land. Therefore, the loss of cropland was mainly caused by the expansion built-up land; 3) The conversion from cropland to built-up land occurred mainly in the neighbor of existed built-up land. We suggest that the cropland protection should be strengthened in the future in Shandong Province. Strict cropland protection policies should be im-plemented and the exploration of reserved cultivated land resources should be launched.
Keywords
Land Use Change, Cropland, Built-Up Land Expansion
山东省建设用地扩张对耕地占用的时空分析
王 猛*，孙晓芳
曲阜师范大学地理与旅游学院，山东 日照
*
通讯作者。
文章引用: 王猛, 孙晓芳. 山东省建设用地扩张对耕地占用的时空分析[J]. 地理科学研究, 2019, 8(2): 234-242. DOI: 10.12677/gser.2019.82025
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