• 资源评价 •

### 2000—2015年深圳市建设用地坡谱演变研究

1. 1. 昆明理工大学国土资源工程学院,昆明 650093;
2. 云南省高校高原山区空间信息测绘技术应用工程研究中心,昆明 650093
• 收稿日期:2017-10-25 修回日期:2018-04-26 出版日期:2018-12-20 发布日期:2018-12-20
• 作者简介:彭秋志（1982- ）,男,云南文山人,博士,讲师,主要从事基于RS与GIS技术的土地资源问题研究。E-mail: pqz20002@163.com
• 基金资助:
昆明理工大学自然科学研究基金资助项目（KKSY201421036）

### Study on the Evolution of Construction Land Slope Spectrum in Shenzhen during 2000-2015

PENG Qiu-zhi1, 2, TANG Ling1, CHEN Jie1, 2, WU Ya-ling1, CHEN Xiang-ze1

1. 1. Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China;
2. Surveying and Mapping Geo-Informatics Technology Research Center on Plateau Mountains of Yunnan Higher Education, Kunming 650093, China
• Received:2017-10-25 Revised:2018-04-26 Online:2018-12-20 Published:2018-12-20
• Supported by:
Natural Science Research Foundation of Kunming University of Science and Technology, No. KKSY201421036

Abstract: The horizontal expansion process of construction land often occurs with vertical climbing process in the rapid urbanization area which constrained by topographic factor. Slope spectrum is a useful tool that can help people understand the spatial-temporal characteristics and evolution laws of the vertical climbing process of construction land. A lot of useful knowledge needs to be mined from the morphological characteristics of slope spectrum curve to guide planning makers to make more scientific land use planning. In this paper, taking Shenzhen and its 10 districts as examples, SRTM DEM data and Landsat TM/OLI images in four periods from 2000 to 2015 were used to build the background land surface slope spectrum and construction land slope spectrum. Aiming to study the morphological characteristics and evolution laws of the construction land slope spectrum, some qualitative empirical knowledge and a series of quantitative indices based on slope spectrum theory were defined, such as steepness of slope spectrum, evenness of slope spectrum, and forward cumulative critical value of slope spectrum. The results show that: 1) The overall expansion rate of construction land in Shenzhen was decreasing and tended to be stagnant from 2000 to 2015. The main spatial pattern of construction land change is characterized by the coexistence of climbing and reclamation and is dominated by stable climbing process. 2) Each municipal district shows different characteristics of construction land slope spectrum which can be summarized as four types: climbing dominated type such as Longhua District, reclamation dominated type such as Nanshan District, climbing and reclamation mixed type such as Yantian District, and stable type such as Futian District. 3) The steepness of slope spectrum is below 0.2, the evenness of slope spectrum is between 0.4 and 0.8, the main upper limit slope of construction land is between 4° and 14°, and the extreme upper limit slope of construction land is between 7° and 20°. In other words, for Shenzhen and its districts, construction land tend to congregate in flat region, and the climbing degree of construction land is not serious. Besides, all the quantitative indices of slope spectrum in the southern municipal districts are larger than those in the north. This research suggests that Shenzhen will still face the pressure of construction land climbing in the near future. It is very necessary and urgent to set scientific and strict standards of upper limit slope for construction land climbing, and it is also important to enforce these standards strictly.

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