PDF
Full
Outline
Land ecological security is the core of sustainable use of land resources, and land use changes caused by human activities change the structure and function of ecosystems, which have a serious impact on the regional ecological security system. In order to explore the changes in ecological security in Chongqing in recent years and in 2030, Chongqing was taken as the research object and PLUS (patch-level land use simulation) model was employed to simulate land use changes under the scenarios of natural development, ecological priority and development priority in 2030. Based on the ecological perspective, an ecological security evaluation index system was constructed, and the mutation model was combined to quantitatively evaluate the level of land ecological security. The results show that the spatial distribution of land use types in Chongqing is quite different, the cultivated land area decreased by 3 995.14 km2, and the construction land area increased by 1 147.36 km2, realizing rapid urban development. At the same time, 64.53%, 67.31% and 55.97% were relatively safe or above under the three scenarios. The spatial pattern of ecological security in Chongqing is opposite to the spatial pattern of population density and GDP, and consistent with the spatial pattern of natural data such as vegetation cover and slope. Through the ecological assessment of land use changes in previous years and under different scenarios, it provides a basis for high-quality coordinated development of ecology and economy.
PDF
406
165
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
