|Table of Contents|

Spatial-temporal Change Characteristics of Cultivated Land Quality in Shaanxi Section of Qinling, China and Their Driving Forces(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2023年第02期
Page:
350-361
Research Field:
环境与可持续发展
Publishing date:

Info

Title:
Spatial-temporal Change Characteristics of Cultivated Land Quality in Shaanxi Section of Qinling, China and Their Driving Forces
Author(s):
WEI Xin-dong1; 2; 3;  GUAN Jia-min1;  FENG Xiao-long4;  WANG Shai-ni1; 2; 3*;  ZHAO Yan-bin1;  ZHANG Yu1;  KONG De-hao1
(1. School of Land Engineering, Chang'an University, Xi'an 710054, Shaanxi, China; 2. Shaanxi Key Laboratory of Land Reclamation Engineering, Xi'an 710054, Shaanxi, China; 3. Key Laboratory of Degradation and Unused Land Rehabilitation Engineering, Ministry of Natural Resources, Xi'an 710054, Shaanxi, China; 4. Shaanxi Provincial Land Consolidation and Rehabilitation Center, Xi'an 710082, Shaanxi, China)
Keywords:
land use;  cultivated land quality;  spatial-temporal change;  driving force;  cultivated land protection;  Qinling;  Shaanxi
PACS:
S158; F323.21
DOI:
10.19814/j.jese.2022.05006
Abstract:
The uniqueness, complexity and sensitivity of the geographical environment in Qinling make it a typical area for the study of resource environmental protection and man-land coordination. Therefore, in order to study the changes of cultivated land resources and environment in Qinling, the annual update evaluation and statistical yearbook data of cultivated land quality at 1:10 000 county level from 2005 to 2019 in Shaanxi province were adopted based on dynamic attitude model, location index, center of gravity migration model and geographic detector. The spatial-temporal pattern and driving mechanism of cultivated land quality in 6 prefecture-level cities, 39 counties(county-level cities, districts)and 353 towns in Shaanxi section of Qinling were investigated. The results show that ① in terms of time, during 2005-2010, 2010-2015 and 2015-2019, the quantity of cultivated land resource decreases with an average annual decrease rate of 0.45%, 0.12% and 0.20%, respectively; the change of cultivated land quantity tends to be stable with an average quality of 10.98; it is slightly higher than the average of Shaanxi province(11.34)and lower than the national average(9.96); ② spatially, the Shaanxi section of Qinling shows a distribution pattern of high cultivated land quality in the north line and southwest line near Guanzhong plain, and in the central area, while low cultivated land quality in the east and west from 2005 to 2019; according to the changes of location index, Xi'an and Weinan cities with better natural geographical conditions have higher cultivated land and are the aggregation areas of high-quality cultivated land, while Hanzhong, Ankang and Shangluo cities in the southern Shaanxi have poorer cultivated land quality and a higher aggregation degree of middle- and low-quality cultivated land; according to the center of gravity migration, the center of gravity of the high-quality cultivated land transfers from Zhouzhi county to Huyi district of Xi'an city, that of the middle-quality cultivated land transfers from Ningshan county to Zhen'an county, that of the low-quality cultivated land transfers from Hanbin district of Ankang city to Zhashui county, and then to Zhen'an county; coordinate migrations of cultivated land are low-quality, middle-quality and high-quality in descending order; ③ the main driving factor of spatio-temporal change of cultivated land quality in Shaanxi section of Qinling is human activity; the interaction of each factor enhances the explanatory power, and jointly affects the change of cultivated land quality in Shaanxi section of Qinling. The research results provide scientific basis for further implementation of cultivated land resources, ecological environment protection and rural revitalization in Qinling.

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Last Update: 2023-05-20