Land use optimization of rural production–living–ecological space at different scales based on the BP–ANN and CLUE–S models

Ecological Indicators, Journal Year: 2022, Volume and Issue: 137, P. 108710 - 108710

Published: March 1, 2022

Rural production–living–ecological (PLE) space is the essential carrier of China's rural land resource planning and management. However, pattern identification, optimal prediction, multi–scale integration PLE lack sufficient scientific evidence reliable quantitative analysis. To fill this gap, paper proposes a multi-scale use optimization method based on benefit coupling evaluation, BP–ANN CLUE–S models. The typical hilly area upper reaches Yangtze River in southwest China were used as case for empirical study. results showed that there was high correlation between patterns benefits. key to areas increase ecological improve capacity regional ecosystem services. Through evaluation degree comprehensive coupling, 44 sample towns with an effectively identified construct model. At scale, BP-ANN model predicted ratio structure each township unit natural, social, economic influencing factors. reduced production by 8.94% average, increased 9.2% kept living relatively stable. proportions production, living, adjusted 59.85%, 8.34%, 31.81%, respectively, which can better meet demand food security protection future. Regarding smaller CLUE-S took regional-scale goal simulate spatial distribution use. proportion town Taiping optimized from previous 88.17%, 6.25%, 5.58% 62.92%, 7.83%, 29.25%, respectively. not only ensure stability high-quality cultivated land, but also functions such soil conservation water purification. This novel proven be effective functional cohesion integration, providing support sustainable resources China.

Language: Английский

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Pathways of biogenically excreted organic matter into soil aggregates

Soil Biology and Biochemistry, Journal Year: 2021, Volume and Issue: 164, P. 108483 - 108483

Published: Nov. 5, 2021

Soil organisms are recognized as ecosystem engineers and key for aggregation in soil due to bioturbation, organic matter (OM) decomposition, excretion of biogenic OM. The activity is beneficial quality, functions, nutrient cycling. These attributions based on field-scale observations that link the presence spatiotemporal changes properties can be traced back formation aggregates. This pathway encompasses a cascade processes so far not discussed comprehensively. A more general approach needs consider feedback loops between biota, active release OM by excretion, interaction with constituents, organo-mineral associations, how these become incorporated aggregated structures. Especially function biogenically excreted OM, which quite complex composition, controversial it permits or inhibits aggregation. review analyzes various roles may take an agent. We will show its depends interplay numerous factors, including environmental conditions, variety producers, composition availability type interacting mineral phase. affect aggregate three different ways: (I) bridging agent promotes surface modifications attraction, (II) separation favors formation, mobility, transport associations their further inclusion into aggregates, (III) gluing mediates stability, after external force provokes close particles. conclude takes functional simultaneously varying extent across scales. Hence, involved modification particles, enmeshment particles (im-)mobilization, facilitating All hierarchy factors comprising local community's conditions immediate environment.

Language: Английский

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Land Use and Management Effects on Sustainable Sugarcane-Derived Bioenergy

Land, Journal Year: 2021, Volume and Issue: 10(1), P. 72 - 72

Published: Jan. 15, 2021

Bioenergy is an important and feasible option for mitigating global warming climate change. However, large-scale land-use change (LUC) to expand bioenergy crops, such as sugarcane, raises concerns about the potential negative environmental socioeconomic side effects. Such effects are context-specific, depending on LUC scenario management practices, several co-benefits can be attained. We reviewed literature discussed how best practices affect key components of sustainability (e.g., soil health, carbon (C) sequestration, greenhouse gas emissions (GHG) emissions, nutrient cycling, water quality, among others) sugarcane-derived production in Brazil. Sugarcane expansion has occurred predominantly over pasture areas, although converting croplands could also environmentally option. The land transition from low-productivity pastures sugarcane cultivation seems a sustainable pathway increase production. This enhances health C sequestration time, compaction, biodiversity loss, erosion still challenging. Besides, adopting conservation tillage, crop residue management, rational fertilization, recycling by-products, been fundamental ensuring Public policies well-designed legal frameworks regulations, Forest Code RenovaBio legislations Brazil, necessary make compatible with use protection. Lastly, our analysis provided insights into small proportion (1%) areas Latin American Caribbean (LAC) sub-Saharan African (SSA) countries, which may result substantial impact supply. concluded that tackle while provisioning other ecosystem services promoting development.

Language: Английский

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Soil organic carbon and soil erodibility response to various land-use changes in northern Thailand

CATENA, Journal Year: 2022, Volume and Issue: 219, P. 106595 - 106595

Published: Sept. 6, 2022

Language: Английский

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Meta-analysis of global soil data identifies robust indicators for short-term changes in soil organic carbon stock following land use change

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 860, P. 160484 - 160484

Published: Nov. 25, 2022

The restoration of degraded lands and minimizing the degradation productive are at forefront many environmental land management schemes around world. A key indicator soil productivity is organic carbon (SOC), which influences provision most ecosystem services. major challenge in direct measurement changes SOC stock that it difficult to detect within a short timeframe relevant managers. In this study, we sought identify suitable early indicators their drivers. meta-analytical approach was used synthesize global data on impacts arable conversion other uses total stock, 12 different fractions three structural properties. forests grasslands accounted for 91 % available use change datasets meta-analysis were mostly from Asia Europe. Land led 50 (32–68 %) mean increase both labile (microbial biomass C particulate – POC) passive (microaggregate, 53–250 μm diameter; small macroaggregate, 250–2000 diameter) as well stability. There also 37 (24–50 experimental fields where various measured. Only POC stored macroaggregates had strong correlation with SOC: our findings reveal these two predominantly controlled by input rather than climatic factors thus candidate short-term stock. Further field studies recommended validate predictive power equations developed study metrics under scenarios.

Language: Английский

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Responses of soil aggregate stability and soil erosion resistance to different bedrock strata dip and land use types in the karst trough valley of Southwest China

International Soil and Water Conservation Research, Journal Year: 2023, Volume and Issue: 12(3), P. 684 - 696

Published: Sept. 7, 2023

Soil aggregate stability is an important index that reflects soil quality and anti-erosion ability strongly affects processes functions. Bedrock strata dips (dip anti-dip slopes) land use types primarily influence stability, whereas the detailed mechanisms are unclear in karst trough valley. Therefore, to explore effects of bedrock dip type on valleys, soils were collected from five major (abandoned land, grassland, pepper fields, corn fields forest) slopes. The was fractionated into macroaggregates microaggrates using dry wet sieving analysis. particle size distributions microaggregates measured conventional laboratories. results showed significant differences among different dips, slope positions, (P < 0.05). variation ranges higher than those slope. Comparing all types, forest had >0.25 mm water-stable aggregates (85.31%) mean weight diameter (2.67 mm) upper compared other positions In addition, a percentage destruction (35.57%) (29.81%), erodibility factor value natural dip/anti-dip significantly lower When content large larger, macroaggregate greater. failure rate lower, structure better. Overall, these suggest forests can improve aggregates, thereby improving erosion resistance. recovery measures should be implemented slopes valleys.

Language: Английский

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Sugarcane straw effects on soil compaction susceptibility

Soil and Tillage Research, Journal Year: 2021, Volume and Issue: 212, P. 105066 - 105066

Published: May 18, 2021

Language: Английский

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Changes in soil organic matter fractions induced by cropland and pasture expansion in Brazil's new agricultural frontier

Geoderma Regional, Journal Year: 2021, Volume and Issue: 28, P. e00474 - e00474

Published: Dec. 24, 2021

Language: Английский

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Land use changes and edaphic properties control contents and isotopic compositions of soil organic carbon and nitrogen in wetlands

CATENA, Journal Year: 2024, Volume and Issue: 241, P. 108031 - 108031

Published: April 13, 2024

Language: Английский

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Soil carbon allocation, composition, and sequestration changes induced by cropping diversification in tropical systems

Soil and Tillage Research, Journal Year: 2025, Volume and Issue: 248, P. 106464 - 106464

Published: Jan. 26, 2025

Language: Английский

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