Global maps of cropland extent and change show accelerated cropland expansion in the twenty-first century

Nature Food, Год журнала: 2021, Номер 3(1), С. 19 - 28

Опубликована: Дек. 23, 2021

Abstract Spatiotemporally consistent data on global cropland extent is essential for tracking progress towards sustainable food production. In the present study, we an analysis of area change first two decades twenty-first century derived from satellite time-series. We estimate that, in 2019, was 1,244 Mha with a corresponding total annual net primary production (NPP) 5.5 Pg C year −1 . From 2003 to increased by 9% and NPP 25%, primarily due agricultural expansion Africa South America. Global accelerated over past decades, near doubling rate, most notably Africa. Half new (49%) replaced natural vegetation tree cover, indicating conflict sustainability goal protecting terrestrial ecosystems. per-capita decreased 10% population growth. However, 3.5% as result intensified land use. The presented global, high-resolution, map time-series supports monitoring appropriation at local, national international levels.

Язык: Английский

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Achieving a nature- and people-positive future

One Earth, Год журнала: 2022, Номер 6(2), С. 105 - 117

Опубликована: Дек. 5, 2022

Despite decades of increasing investment in conservation, we have not succeeded "bending the curve" biodiversity decline. Efforts to meet new targets and goals for next three risk repeating this outcome due factors: neglect drivers decline; unrealistic expectations time frames recovery; insufficient attention justice within between generations across countries. Our Earth system approach identifies six sets actions that when tackled simultaneously address these failings: (1) reduce reverse direct indirect causing (2) halt loss; (3) restore regenerate a safe state; (4) raise minimum wellbeing all; (5) eliminate over-consumption excesses associated with accumulation capital; (6) uphold respect rights responsibilities all communities, present future. Current conservation campaigns primarily 2 3, urgent upscaling 1, 4, 5, 6 needed help deliver post-2020 global framework.

Язык: Английский

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Post-2020 biodiversity framework challenged by cropland expansion in protected areas

Nature Sustainability, Год журнала: 2023, Номер 6(7), С. 758 - 768

Опубликована: Март 23, 2023

Язык: Английский

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Effects of fragmentation on grassland plant diversity depend on the habitat specialization of species

Biological Conservation, Год журнала: 2022, Номер 275, С. 109773 - 109773

Опубликована: Окт. 18, 2022

Язык: Английский

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Pervasive cropland in protected areas highlight trade-offs between conservation and food security

Proceedings of the National Academy of Sciences, Год журнала: 2021, Номер 118(4)

Опубликована: Янв. 18, 2021

Global cropland expansion over the last century caused widespread habitat loss and degradation. Establishment of protected areas aims to counteract habitats slow species extinctions. However, many also include high levels disturbance conversion for uses such as cropland. Understanding where why this occurs may realign conservation priorities inform area policy in light competing food security. Here, we use our global synthesis dataset quantify globally assess their relationship socio-environmental context. We estimate that occupies 1.4 million km2 or 6% area. Cropland across all management types, with 22% occurring strictly areas. inside is more prevalent countries higher population density, lower income inequality, agricultural suitability lands. While phenomenon dominant midnorthern latitudes, tropics subtropics present greater trade-offs due both biodiversity insecurity. Although area-based targets are prominent goal-setting, results show they can mask persistent anthropogenic land detrimental native ecosystem conservation. To ensure long-term efficacy areas, post-2020 goal setting must link human health improve monitoring outcomes cropland-impacted

Язык: Английский

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Urbanization in China drives farmland uphill under the constraint of the requisition–compensation balance

The Science of The Total Environment, Год журнала: 2022, Номер 831, С. 154895 - 154895

Опубликована: Март 29, 2022

Язык: Английский

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The non-significant correlation between landscape ecological risk and ecosystem services in Xi'an Metropolitan Area, China

Ecological Indicators, Год журнала: 2022, Номер 141, С. 109118 - 109118

Опубликована: Июнь 30, 2022

As critical prerequisite for sustainable development research of social ecosystem (SDSE), the relationship between landscape security pattern and services should be explicitly evaluated to support SDSE research. However, existing evaluation system lacking integrating analysts factors led vague knowledge mechanism. To tackle this issue, study, therefore, explored ecological risk (e.g. carbon sequestration, soil conservation, water yield, crop production residential support) at Xi'an Metropolitan Area using remote sensing data in 2010 2020. The results show that overall decreased from 0.2618 0.2479. Although rapid urban leading improvement support, total has declined due decline yield production. Preventing on fragmentation cannot improve level services. Notably, stronger interference human activities overwhelmingly caused a single advantageous with extreme risk, while less multiple regulation medium–low risk. Additionally, competitive would not produce higher by intervention activity. sequestration (or conservation) resulted high Using these results, potential spatial plan is then made based areas This study benefits decision-making regional comprehensive prevention, future planning orientation, ecosystem.

Язык: Английский

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Direct and indirect effects of agricultural expansion and landscape fragmentation processes on natural habitats

Agriculture Ecosystems & Environment, Год журнала: 2023, Номер 353, С. 108555 - 108555

Опубликована: Апрель 28, 2023

Язык: Английский

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Predicting Future Land Use Utilizing Economic and Land Surface Parameters with ANN and Markov Chain Models

Earth, Год журнала: 2023, Номер 4(3), С. 728 - 751

Опубликована: Сен. 15, 2023

The main aim of this study is to comprehensively analyze the dynamics land use and cover (LULC) changes in Bathinda region Punjab, India, encompassing historical, current, future trends. To forecast LULC, Cellular Automaton–Markov Chain (CA) based on artificial neural network (ANN) concepts was used using cartographic variables such as environmental, economic, cultural. For segmenting a combination ML models, support vector machine (SVM) Maximum Likelihood Classifier (MLC). empirical nature, it employs quantitative analyses shed light LULC variations through time. result indicates that barren expected shrink from 55.2 km2 1990 5.6 2050, signifying better management or increasing human activity. Vegetative expanses, other hand, are rise 81.3 205.6 reflecting balance between urbanization ecological conservation. Agricultural fields increase 2597.4 2859.6 2020 before stabilizing at 2898.4 2050. Water landscapes 13.4 providing possible issues for water resources. Wetland regions decrease, thus complicating irrigation groundwater reservoir sustainability. These findings confirmed by strong statistical indices, with study’s high kappa coefficients Kno (0.97), Kstandard (0.95), Klocation (0.97) indicating reasonable level accuracy CA prediction. From F1 score, significant issue found MLC vegetation, resolved SVM classification. can be inform policy plans sustainable development beyond.

Язык: Английский

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Mixed effectiveness of global protected areas in resisting habitat loss

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Сен. 27, 2024

Язык: Английский

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