|
| Analysis on Spatial-Temporal Evolution and Driving Force of Non-Grain Cultivated Land of Guangzhou City |
| |
| DOI：10.16768/j.issn.1004-874X.2023.01.014 |
|
| Hits: 994 |
| Download times: 717 |
| Abstract: |
| 【Objective】 The problem of non-grain cultivated land brings risks to food security. It is urgent to implement cultivated land protection measures. As a first-tier city in China, Guangzhou has a widespread phenomenon of non-grain cultivated land. The research aims to analyze the spatial-temporal evolution characteristics of non-grain cultivated land in Guangzhou, explore the driving force of non-grain process, and put forward relevant suggestions to prevent non-grain cultivated land, which can provide references for the control of non-grain cultivated land in Guangzhou. 【Method】GIS spatial analysis method was used to study the spatial-temporal evolution process of non-grain cultivated land in Guangzhou, and Geodetector Model was used to study the influencing factors of non-grain cultivated land. 【Result】(1) From 2005 to 2016, the non-grain rate of cultivated land in Guangzhou increased slightly from 60.46% to 67.17%. From 2016 to 2018, the non-grain rate of cultivated land increased significantly from 67.17% to 87.53%. From 2018 to 2020, the non-grain rate of cultivated land decreased from 87.53% to 86.91%, indicating that the non-grain problem of cultivated land in Guangzhou is serious. (2) From a regional perspective, the non-grain level of the central urban area was generally higher than that of the peripheral urban area. In 2020, the non-grain levels of the northern Conghua District was low with the nongrain rates of cultivated land 58%. The non-grain level of Liwan District, Haizhu District and Tianhe District were the highest with the non-grain rate of cultivated land 100%. (3) The non-grain cultivated land conversion in Guangzhou is affected by many factors, and most of the influencing factors show a two-factor enhancement relationship, and a few show nonlinear enhancement relationship. Among the single factors, urbanization rate, consumption level and GDP per land are the most important, with an average influence of 0.9176, 0.7059 and 0.6674, respectively, while the influence of natural resource endowment dimension is relatively soft.【Conclusion】The overall non-grain level of Guangzhou is high, and the imbalance of internal economic development has a profound impact on the spatial distribution pattern of non-grain level. More attention should be paid to the protection of cultivated land, strengthening the construction of cultivated land protection system and implementing the responsibilities of all parties. Guangzhou should further improve the policies for benefiting farmers, establish high-standard permanent basic farmland, provide financial and technical support, facilitate to improve the quality and efficiency of grain production, and enhance the enthusiasm of farmers to grow grain. And it should cultivate professional talents, promote industrial integration and upgrading, and increase the additional income of grain production. Countermeasures should be taken to prevent the illegal occupation of cultivated land from many aspects, in order to stabilize the sown area of crops, prevent the non-grain use of cultivated land, and ensure the increase of grain production and income. |
|
View Full Text
View/Add Comment Download reader |
|
|
|
