Analysis of the marine resource environmental carrying capacity in Zhejiang Province based on the Pressure-Support and Destructiveness-Resilience and Degradation-Promotion (PS-DR-DP) model DOI Creative Commons
Chao Ying, Yunze Yang, Yongchao Liu

et al.

Frontiers in Marine Science, Journal Year: 2022, Volume and Issue: 9

Published: Nov. 22, 2022

Introduction Large-scale and high-intensity marine resource exploitation activities have brought irreversible influences on the environment ecosystem. As an important index to evaluate state of development, environmental carrying capacity (MRECC) is vital sustainable development sea areas. Methods In this study, evaluation system was established based PS-DR-DP (Pressure Support-Destructiveness Resilience- Degradation Promotion) theoretical model. The MRECC in Zhejiang Province from 2004 2018 evaluated through categorical arrangement polygon representation. Moreover, coordination degree analyzed by using coupling harmonious Results Discussion demonstrated following 2018: 1) level increased firstly, then decreased slightly, finally presented a slow increasing trend. 2) mean contributions acting forces fluctuate between 0.64 0.68. It high-speed unsteady growth tended be ideal state. positive force tends increase, while negative generally stable or only slightly except for degradation force. 3) subsystems rising ranged 0.50 0.80 those 2004, 2006, 2007. were running-in during study period. type changed mild imbalance moderate coordination.

Language: Английский

How many people can the Qinghai-Tibet Plateau hold, and how large cities can be built in recent hundred years? DOI
Chuanglin Fang, Guangdong Li, Chao Bao

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 927, P. 172404 - 172404

Published: April 10, 2024

Language: Английский

Citations

4
Spatial and temporal variation and driving factors of ecological carrying capacity in the Pan-Pearl River Basin, China DOI Creative Commons
Jieying Chen, Xiaohui Huang, Jing Ye

et al.

Ecological Indicators, Journal Year: 2023, Volume and Issue: 151, P. 110318 - 110318

Published: May 8, 2023

The Pan-Pearl River Basin (PPRB) has acted as a pioneer region of China's reform and opening-up with rapid economic development. Quantitatively clarifying the evolution ecological carrying capacity (ECC) is vital for sustainable development PPRB. Therefore, this study combined comprehensive evaluation method pressure-state-response (PSR) index system footprint based on net primary productivity (EF-NPP) to analyze spatial temporal (CECC) in PPRB from 2002 2019 economy society. random forest regression was then used factors driving ECC exponential smoothing predict future trend CECC results indicated that coincided some resource consumption environmental damage. But will improve continuously over next six years according prediction method. per-capita increased southern coastal area northern inland area. Hunan Province decreased significantly during 2007–2010 Guangdong 2015–2019. main influencing included damage environment These two showed "U"-shaped relationship PPRB, indicating gradual emergence harmony This provides theoretical basis restoration management

Language: Английский

Citations

10
Composition and vertical distribution of agricultural soil Macrofauna community after an extreme high temperature event in the summer of 2022 DOI Creative Commons
Meixiang Gao, Peng Chen, Yaxin Hu

et al.

Ecological Indicators, Journal Year: 2023, Volume and Issue: 153, P. 110439 - 110439

Published: May 31, 2023

Extreme high temperature (EHT) events are becoming more frequent and prolonged due to global climate change. Predicting the effects of EHT on agricultural soil fauna remains a major challenge. In order assess response community composition vertical distribution events, this study investigated macrofauna communities in facility farmlands at end an event East China 2022 eighteen days after. The results showed that taxonomic richness abundances were reduced after event. However, changes abundance taxonomically dependent: individuals ants (Pheidole indica), centipedes (Himantariidae) crickets decreased significantly, while Enchytraeidae earthworms increased. Soil water content was important factor determining maximum values observed surface layer (0–10 cm) Earthworms burrowed into deeper event, but moved These most taxa experienced adverse posed by earthworm had abilities increase their rapidly events. This suggests should be considered when assessing impact biodiversity.

Language: Английский

Citations

10
The ecological footprint study of marine fisheries in Liaoning Province of China based on system dynamics DOI Open Access
Jixin Yang, Xubin Pan, Zengqiang Yin

et al.

Indian Journal of Fisheries, Journal Year: 2023, Volume and Issue: 70(4)

Published: Dec. 31, 2023

Since the end of 20th century, with rapid development marine economy, environment Liaoning Province in China was under tremendous pressure andthe fishery resources have been serious decline. The fishing output reduced from 1.502×107 t 2000 to 5.244×106 2018. Using STELLA software as modeling platform, we followed basic steps system dynamics (SD model), combined principle ecological footprint fisheries establish theSD model China, and applied thefuzzy evaluation method comprehensively evaluate carrying capacity ofLiaoning area. results show that Provincehave deficit unsustainable development. has increased 1.08×107 km2 1.88×107 an average value 1.60×107 between 2018, which is already higher than 3.20×106 about 5 times capacity, means needs be at least 20% its current level for rebound decrease steadily, thus preventing ecosystem collapse. Keywords: Ecological fisheries; resources; System dynamics;

Language: Английский

Citations

4
Size distribution and lung-deposition of ambient particulate matter oxidative potential: A contrast between dithiothreitol and ascorbic acid assays DOI Creative Commons

Lord Famiyeh,

Chunrong Jia,

Ke Chen

et al.

Environmental Pollution, Journal Year: 2023, Volume and Issue: 336, P. 122437 - 122437

Published: Aug. 25, 2023

Particulate matter (PM) inhaled into human lungs causes oxidative stress and adverse health effects through antioxidant depletion (oxidative potential, OP). However, there is limited knowledge regarding the association between lung-deposited dose (LDD) of PM OP in extrathoracic (ET), tracheobronchial (TB), pulmonary (P) regions lungs. Dithiothreitol (DTT) ascorbic acid (AA) assays were employed to measure size fractions investigate distribution identify chemical drivers. Quasi-ultrafine particles (quasi-UFP, ≤0.49 μm) exhibited high deposition TB P regions, while coarse (CP, ≥3.0 dominated ET region. A plot extrinsic (per air volume) intrinsic mass) versus LDD revealed that for fine was greatest region, whereas quasi-UFP alveoli. The study also demonstrated doses are not strongly related. decline with increasing reveals need further investigation antagonistic compositions. Overall, results presented herein help address gap ambient specific

Language: Английский

Citations

3
Spatial-Temporal Pattern and Influencing Factors of Land Ecological Carrying Capacity in The National Pilot Zones for Ecological Conservation in China DOI Creative Commons

Zhenggen Fan,

Ji Liu, Hu Yu

et al.

Land, Journal Year: 2022, Volume and Issue: 11(12), P. 2199 - 2199

Published: Dec. 4, 2022

Improving land ecological carrying capacity (LECC) is important in accelerating the realization of national civilization construction goals. Based on panel data first batch prefecture-level cities National Pilot Zones for Ecological Conservation initiative from 2005 to 2019, this study analyzes spatial–temporal pattern LECC using improved footprint model, Theil–Sen’s slope estimator and Mann–Kendall test, investigates influencing factors geodetector. Results show that overall status each province tends improve but also shows remarkable interprovincial differences development trend, with Guizhou outperforming Jiangxi Fujian general. The security has apparent regional heterogeneity. Most have high pressure uneven spatial distribution slowly overall. factor forest coverage population density strong explanatory power LECC, interactions among are enhanced. four aspects should be carried out. A step strengthen management optimize use practices actively. Second, modern technology used establish real-time monitoring early warning systems security. Third, two key focused on, enhancing their positive interaction industrial structure arable utilization rate. Finally, experience model promoted Non-national China. aim enhance effectiveness ecology measures further promote

Language: Английский

Citations

4
Design and Development of an Optimal Control Model in System Dynamics through State-Space Representation DOI Creative Commons
Jorge Manuel Barrios Sánchez, Roberto Baeza Serrato

Applied Sciences, Journal Year: 2023, Volume and Issue: 13(12), P. 7154 - 7154

Published: June 15, 2023

Control engineering and state-space representation are valuable tools in the analysis design of dynamic systems. In this research, a methodology is proposed that uses these approaches to transform system-dynamics simulation model into mathematical model. This achieved by expressing input, output state variables as vectors, respectively, allowing matrix form. The resulting linear time-invariant, facilitating its design. Through use methodology, system transfer obtained, which allows optimal control Ackermann gain-control technique used determine system, results shorter settlement time. research proposal seeks mathematically strengthen models provide an analytical alternative through modern SD models. would allow more informed effective decisions implementation

Language: Английский

Citations

2
Research on the New Ecological Model under the Environment of “Double Reduction” of Children’s Community Education Services DOI Creative Commons
Jing Zhou

Journal of Environmental and Public Health, Journal Year: 2022, Volume and Issue: 2022(1)

Published: Jan. 1, 2022

Children are the hope of building a powerful, modern‐socialist state. In recent years, all social classes have paid more and attention to children’s enlightenment education, country began implement double reduction policy. As main place for children live grow, community has responsibility obligation conduct education children. Work effective development utilization resources can greatly meet needs growth, help develop good behavior habits, lay solid foundation future education. Through experimental survey results, this paper discusses theoretical basis under dual emission policy, puts forward corresponding principles, analyzes strategies improve efficiency

Language: Английский

Citations

2
Research on the ECC of Chengdu–Chongqing’s Urban Agglomeration in China Based on System Dynamics DOI Open Access

Xiaohu Ci,

Liping Zhang, Tongxiang Wang

et al.

Sustainability, Journal Year: 2022, Volume and Issue: 14(17), P. 10896 - 10896

Published: Aug. 31, 2022

The ecological carrying capacity (ECC) is a prerequisite for China’s regional and green developments. Since the Chengdu–Chongqing urban agglomeration (CCUA) an important economic area, it to study development of its ECC in order establish promote regionally coordinated China. This paper first establishes evaluation index system based on Pressure–State–Response (PSR) model AHP-TOPSIS. Secondly, estimates CCUA between 2000 2018. Thirdly, constructs dynamics and, finally, simulates predicts from 2021 2050 shared socioeconomic pathways. results show that indices 16 cities have increased significantly 18 years annual all significant growth trends. will should select most suitable mode be adopted different periods. follow SSP2 2025, SSP1 2026 2035, characteristics SSP5 referred at levels 2036 2050, CCUA’s overall accordance with SSP1.

Language: Английский

Citations

2
Analysis of the marine resource environmental carrying capacity in Zhejiang Province based on the Pressure-Support and Destructiveness-Resilience and Degradation-Promotion (PS-DR-DP) model DOI Creative Commons
Chao Ying, Yunze Yang, Yongchao Liu

et al.

Frontiers in Marine Science, Journal Year: 2022, Volume and Issue: 9

Published: Nov. 22, 2022

Introduction Large-scale and high-intensity marine resource exploitation activities have brought irreversible influences on the environment ecosystem. As an important index to evaluate state of development, environmental carrying capacity (MRECC) is vital sustainable development sea areas. Methods In this study, evaluation system was established based PS-DR-DP (Pressure Support-Destructiveness Resilience- Degradation Promotion) theoretical model. The MRECC in Zhejiang Province from 2004 2018 evaluated through categorical arrangement polygon representation. Moreover, coordination degree analyzed by using coupling harmonious Results Discussion demonstrated following 2018: 1) level increased firstly, then decreased slightly, finally presented a slow increasing trend. 2) mean contributions acting forces fluctuate between 0.64 0.68. It high-speed unsteady growth tended be ideal state. positive force tends increase, while negative generally stable or only slightly except for degradation force. 3) subsystems rising ranged 0.50 0.80 those 2004, 2006, 2007. were running-in during study period. type changed mild imbalance moderate coordination.

Language: Английский

Citations

1