A New Grazing–Vegetation Tradeoff and Coordination Indicator: The Grazing Intensity and Vegetation Cover Harmonization Index (GVCI) DOI Creative Commons

Qinyi Huang,

Jianjun Chen, Xinhong Li

et al.

Agriculture, Journal Year: 2024, Volume and Issue: 15(1), P. 27 - 27

Published: Dec. 26, 2024

Overgrazing typically leads to grassland vegetation degradation and reduction, which in turn triggers a series of ecological problems. Therefore, it is crucial understand the effects different Grazing Intensities (GIs) on Vegetation Ecosystem (VE) achieve sustainable grazing development. This study proposes new quantitative index, Intensity Cover Harmonization Index (GVCI), based multiple indicators such as fractional cover (FVC), net primary productivity (NPP), GI. The GVCI was used quantify “Harmonization Conflict” status between GI VE 39 Prefecture-Level Cities (PLCs) Qinghai-Tibet Plateau (QTP) evaluate development level regions. In addition, Random Forest (RF) model simulate trend various PLCs from 2015 2040. results showed following: (1) can effectively response relationship VE. overall QTP “Harmonization” state, with proportion areas state fluctuating upwards. (2) economic intuitively affects harmonization Gross Domestic Product (GDP) one important level. higher GDP levels exhibited strong positive correlation regional GDP. (3) simulation indicate that an increasing number will shift toward state. However, some western regions were still “Overload” there need for close monitoring their activities dynamics. proposed this provides novel methodology quantifying complex It offers scientific support ecologically fragile QTP. research be robust basis government formulate reasonable plans.

Language: Английский

Geospatial assessment of soil erosion in the Basantar and Devak watersheds of the NW Himalaya: A study utilizing USLE and RUSLE models DOI Creative Commons
Ajay Kumar Taloor, Varun Khajuria, Gurnam Parsad

et al.

Geosystems and Geoenvironment, Journal Year: 2025, Volume and Issue: unknown, P. 100355 - 100355

Published: Jan. 1, 2025

Language: Английский

Citations

0
Optimization of silver scat population breeding strategy and germplasm resource improvement based on genetic algorithm DOI Open Access
Pan Chen,

Liu Cao,

Ning Yang

et al.

Applied Mathematics and Nonlinear Sciences, Journal Year: 2025, Volume and Issue: 10(1)

Published: Jan. 1, 2025

Abstract Silverdrum fish is popular among farmers because of its fast growth and easy rearing, so it important to study the optimization method artificial breeding strategy silverdrum stock. In this study, according requirements environment silver scat experience experts, flow rate, water depth, temperature light market are key factors model breeding, multi-objective algorithm NSGA-II selected as main model, intersection operator variational in improved, then SDR proposed a substitute for Pareto dominance relationship enhance solving ability algorithm. The was found be most suitable drum when temperature, depth duration were set 22.5℃, 0.21m/s, 1.7m 15h, respectively. results experiments showed that gonadal development parents optimized group better than those original group, survival rates juveniles better, effect germplasm resources improved. This can provide theoretical basis technical support decision-making improvement stock future, also lays data foundation establishment farm.

Language: Английский

Citations

0
Evaluation of Ecosystem Service Capacity Using the Integrated Ecosystem Services Index at Optimal Scale in Central Yunnan, China DOI Creative Commons
Longying Liu, Jinliang Wang, Jie Li

et al.

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(4)

Published: April 1, 2025

Understanding and quantifying the dynamic features of local ecosystem services (ESs) integrating diverse assessment results form crucial foundations for regional ES management. However, existing methods objectively evaluating multiple ESs remain limited. Consequently, this research evaluates four key based on InVEST RUSLE models in Central Yunnan Province (CYP)-from 2000 to 2020: water yield (WY), carbon storage (CS), habitat quality (HQ), soil conservation (SC). It then constructs an Integrated Ecosystem Service Index (IESI) using principal component analysis (PCA). Additionally, study explores factors driving spatial divergence by employing optimal parameter-based geographical detector model (OPGD) at scale. The indicated that (1) IESI was effectively applied CYP could quantitatively comprehensively integrate ESs. (2) During period, showed increasing trends WY, HQ, SC, while CS a decreasing trend. (3) during period exhibited trend initially increasing. average values were 0.7338 2000, 0.6981 2005, 0.6947 2010, 0.6650 2015, 0.6992 2020. (4) A 4500 m × grid identified as scale detecting comprehensive service (CES) CYP, relief degree land surface (RDLS), slope, NDVI top three drivers q-values. This offers more scientific effective method CES. also provides analytical tool balancing use competition assessing effectiveness policy implementation.

Language: Английский

Citations

0
Research on eucalyptus individual tree segmentation and age estimation utilizing improved Mask R-CNN algorithm based on UAV stereo images DOI Creative Commons

Jirong Ding,

Li-Bi You,

Yehua Liang

et al.

Industrial Crops and Products, Journal Year: 2025, Volume and Issue: 230, P. 121073 - 121073

Published: April 23, 2025

Language: Английский

Citations

0
Ecological Waves at Tourist Attractions on the Qinghai-Tibet Plateau Promote Greenness of Surrounding Vegetation DOI Creative Commons

Zitao Yang,

Li Tian

Land, Journal Year: 2025, Volume and Issue: 14(1), P. 159 - 159

Published: Jan. 14, 2025

The unique tourism resources of the Qinghai-Tibet Plateau have created conditions for development ecotourism, while existence attractions may also positive and negative impacts on surrounding environment. This study defines radiation waves that generate ecological effects as “ecological waves”, quantifies by buffer zone analysis normalized difference vegetation index (NDVI) within 20 km 38 4A 5A in 2020, elaborately explores By combining principle ripple effects, it analyzes impact urban environments. found a effect vegetation, suburban has distance threshold, effectively promoting greenness range 6–14 km, disappears beyond 14 km. In addition, applying model to city centers (Xining Lhasa), results indicated among five Xining, Kumbum Monastery, Qinghai Tibetan Culture Center, Country Farming Ecological Park (with restrictions 2–20 km) significant built-up area, Province Museum Qinghai-Tibetan Safari are not significant. Lhasa area significant, different thresholds effects. Furthermore, this better foundation around them than Tibet, making more suitable ecotourism. opened up new perspective provided scientific references Plateau.

Language: Английский

Citations

0
Research on the segmentation of individual trees and the extraction of structural parameters in eucalyptus plantations based on a TEMA mask R-CNN model DOI

Runlian Huang,

Jirong Ding,

Zhaotong Ren

et al.

Journal of Forest Research, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 12

Published: March 17, 2025

Language: Английский

Citations

0
Spatiotemporal Effects and Driving Factors of Ecosystem Services Trade-Offs in the Beijing Plain Area DOI Creative Commons

Lige Bao,

Y. Liu

Land, Journal Year: 2025, Volume and Issue: 14(5), P. 949 - 949

Published: April 27, 2025

Identifying the spatiotemporal variations in and driving factors of trade-offs synergies among ESs plain area forms a critical foundation for effective management ecosystems regulation. It is also crucial effectively distributing natural assets formulation ecological policy. This research utilized correlation analysis, GWR OPGD to examine Net Primary Production, Soil Carbon, Water Conservation, Habitat Quality Beijing Plain from 2001 2020. The results revealed that 2020, HQ SC showed declining trend, while NPP WC exhibited an increasing trend. trade-off intensities NPP-SC, NPP-WC, WC-HQ increased, whereas NPP-HQ, SC-HQ, SC-WC decreased. High-synergy areas were focused central urban area, with scattered distribution southeast northwest. NPP-SC displayed fragmented spatial significant variations. distributions NPP-WC highly similar, both exhibiting strong synergy. However, demonstrated northern but weaker elsewhere, outside area. kind land use was primary element affecting WC-HQ. NDVI precipitation significantly influenced NPP-SC. key influencing variation type, temperature, precipitation. Temperature determinant SC-WC. intensity not determined by single factor driven interactions between services or shared factors, high heterogeneity. These findings provide valuable guidance developing strategies land-use planning restoration.

Language: Английский

Citations

0
Assessment of land surface vulnerability using time-series geospatial datasets DOI Creative Commons
Bo Yuan, Shanchuan Guo, Haowei Mu

et al.

Ecological Informatics, Journal Year: 2025, Volume and Issue: unknown, P. 103178 - 103178

Published: May 1, 2025

Language: Английский

Citations

0
A New Grazing–Vegetation Tradeoff and Coordination Indicator: The Grazing Intensity and Vegetation Cover Harmonization Index (GVCI) DOI Creative Commons

Qinyi Huang,

Jianjun Chen, Xinhong Li

et al.

Agriculture, Journal Year: 2024, Volume and Issue: 15(1), P. 27 - 27

Published: Dec. 26, 2024

Overgrazing typically leads to grassland vegetation degradation and reduction, which in turn triggers a series of ecological problems. Therefore, it is crucial understand the effects different Grazing Intensities (GIs) on Vegetation Ecosystem (VE) achieve sustainable grazing development. This study proposes new quantitative index, Intensity Cover Harmonization Index (GVCI), based multiple indicators such as fractional cover (FVC), net primary productivity (NPP), GI. The GVCI was used quantify “Harmonization Conflict” status between GI VE 39 Prefecture-Level Cities (PLCs) Qinghai-Tibet Plateau (QTP) evaluate development level regions. In addition, Random Forest (RF) model simulate trend various PLCs from 2015 2040. results showed following: (1) can effectively response relationship VE. overall QTP “Harmonization” state, with proportion areas state fluctuating upwards. (2) economic intuitively affects harmonization Gross Domestic Product (GDP) one important level. higher GDP levels exhibited strong positive correlation regional GDP. (3) simulation indicate that an increasing number will shift toward state. However, some western regions were still “Overload” there need for close monitoring their activities dynamics. proposed this provides novel methodology quantifying complex It offers scientific support ecologically fragile QTP. research be robust basis government formulate reasonable plans.

Language: Английский

Citations

2