气候变化领域集成服务门户(CCPortal): Evaluation method and empirical application of human activity suitability of land resources in Qinghai-Tibet Plateau

CCPortal

DOI	10.1007/s11442-023-2135-5
	Evaluation method and empirical application of human activity suitability of land resources in Qinghai-Tibet Plateau
	Xu Yong; Wang Lijia; Yang Hua
发表日期	2023
ISSN	1009-637X
EISSN	1861-9568
起始页码	1397
结束页码	1418
卷号	33 期号:7
英文摘要	The current suitability evaluation methods for land resources human activity in China suffer from theoretical deficiencies related to fundamental data accuracy, elevation and slope classification, and suitability class judgment. Empirical application of these methods is also hindered by excessive evaluation indicators, data acquisition difficulties, and limited applicability to high altitude regions. To address these issues, this paper proposes a technical evaluation framework for the Qinghai-Tibet Plateau (QTP) that employs selected key parameters varying with elevation and slope to establish grid-scale evaluation models for construction land suitability (CLS) and arable land suitability (ALS). A generalized algorithm is then proposed for key parameters such as air density, air temperature, slope suitability for construction, and soil erosion resistance of sloping arable land. Empirical research is conducted using Milin County in southeast Tibet as a case study, with interval measurements of 100 m in elevation and 1 degrees in slope. The evaluation model is tested using grid accuracies of 30 m, 50 m, 100 m, 250 m, 500 m, and 1000 m. The results reveal that: Firstly, the CLS and ALS can be categorized into five classes: highly suitable, suitable, moderately suitable, marginally suitable, and unsuitable, with varying area ratios under different grid accuracies. Secondly, existing construction lands in Milin County are mainly distributed in suitable, highly suitable, and moderately suitable CLS classes, accounting for over 94% of the total area studied under different grid accuracies. While arable land is mainly distributed in suitable, highly suitable, and moderately suitable ALS classes, accounting for over 96%. Thirdly, the empirical research in Milin County indicates that the evaluation method, quantitative model, and parameters algorithm for evaluating human activity suitability of land resources on the QTP are feasible and applicable, with a recommended grid accuracy within 100 m and a maximum of 250 m. Fourthly, the paper establishes a correspondence between land suitability (including construction land and arable land) and topographic factors (elevation and slope) that can be applied to the QTP. Finally, some professional defects in the evaluation methods of available land resources in Major Function Zoning and Double Evaluations of Territorial Spatial Planning in China when applied to the QTP are identified.
关键词	human activity evaluation model construction land suitability arable land suitability land resource Qinghai-Tibet Plateau
英文关键词	CONSTRUCTION LAND; PATTERN; RIVER
WOS研究方向	Geography, Physical
WOS记录号	WOS:001076750300003
来源期刊	JOURNAL OF GEOGRAPHICAL SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282778
作者单位	Chinese Academy of Sciences; Institute of Geographic Sciences & Natural Resources Research, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Xu Yong,Wang Lijia,Yang Hua. Evaluation method and empirical application of human activity suitability of land resources in Qinghai-Tibet Plateau[J],2023,33(7).
APA	Xu Yong,Wang Lijia,&Yang Hua.(2023).Evaluation method and empirical application of human activity suitability of land resources in Qinghai-Tibet Plateau.JOURNAL OF GEOGRAPHICAL SCIENCES,33(7).
MLA	Xu Yong,et al."Evaluation method and empirical application of human activity suitability of land resources in Qinghai-Tibet Plateau".JOURNAL OF GEOGRAPHICAL SCIENCES 33.7(2023).