Scenario analysis and relative importance indicators for combined impact of climate and land-use change on annual ecosystem services in the Karst mountainous region

Ecological Indicators, Год журнала: 2023, Номер 147, С. 109991 - 109991

Опубликована: Фев. 10, 2023

Land use and climate change are important factors that help in driving changes ecosystem services (ES); understanding the mechanisms behind is critical to enhance functions. However, high degree of topographic heterogeneity Karst mountainous leads uncertainty spatial temporal differences their combined effects on ESs. To solve this problem, study measured four ESs, grain production (GP), carbon sequestration (CS), water conservation (WC), soil retention (SR), taking Qiangui mountains as a case area. The relative importance effect indices were established analyze interactions year-by-year land ESs based two scales full-pixel simultaneous climate. results show fluctuating trend an increase ES from 2010 2020, where both them had positive negative fluctuation within different years. Generally, land-use inhibited GP enhanced other they facilitated by change. entire area mainly affected change; stronger influence than 80% pixels. When only pixels considered, SR was influenced remaining change, but contributions showed significant interannual differences. Their dominated trade-offs for synergistic with 50–75% areas effects. shows analysis dynamics influencing provided more information, guiding identification hotspots impact future priority ecological conservation.

Язык: Английский

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Ecosystem services balance and its influencing factors detection in China: A case study in Chengdu-Chongqing urban agglomerations

Ecological Indicators, Год журнала: 2023, Номер 151, С. 110330 - 110330

Опубликована: Май 12, 2023

Rapid urbanization in China's urban agglomerations has severely disrupted the relationship between supply and demand for ecosystem services (ESs). Exploring spatial temporal variation characteristics of ESs balance its driving mechanisms is crucial high-quality development agglomerations. However, few studies have explored pattern at multiple scales agglomerations, which constrains formulation regional ecological protection land use policies. In this study, we attempted to characterize spatio-temporal from 2000 2020 Chengdu-Chongqing (CCUA), using matrix hotspot analysis tools. We then introduced optimal parametric geographic detector detect formation mechanism differentiation balance. The results show that overall index CCUA was greater than index. were short Chengdu Chongqing. had significant scale dependence. hot spots mainly western, southern, eastern mountainous regions, while cold concentrated areas Chongqing, with differences different scales. distribution affected by forest proportion, slope, normalized difference vegetation (NDVI), elevation, cultivated temperature. interaction natural, use, socio-economic factors significantly enhanced types highlights importance topography, NDVI, land, population. study can provide scientific references sustainable management construction civilization CCUA.

Язык: Английский

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Spatiotemporal Variations in the Sensitivity of Vegetation Growth to Typical Climate Factors on the Qinghai–Tibet Plateau

Remote Sensing, Год журнала: 2023, Номер 15(9), С. 2355 - 2355

Опубликована: Апрель 29, 2023

Gaining knowledge about vegetation sensitivity in response to climate change is a current research priority the context of accelerated shifts generated by global warming, especially for Qinghai–Tibet Plateau (QTP), where known be highly sensitive ongoing change. However, temporal variability still poorly understood on QTP. Here, we articulate interannual typical factors, including temperature, solar radiation, and water availability, QTP during 2000–2021, using variety indicators characterizing dynamics, Leaf Area Index (LAI), Normalized Difference Vegetation (NDVI), Enhanced (EVI), solar-induced chlorophyll fluorescence (SIF) data. The results indicate that temperature exerted positive impacts forests, grasslands, barren or sparsely vegetated areas (BSVs). all land-cover types showed decreasing variability. Solar radiation had impact while it negative grasslands BSVs. An increasing trend was observed found BSVs regarding their radiation. Water availability BSVs, no obvious direction could determined forests. Over last two decades, forests exhibited grasslands. Overall, most important factor, followed regulation Spatially, jointly dominated central eastern Conversely, southeastern northeastern southwestern This study provides theoretical support ecological conservation management

Язык: Английский

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Analysis of trade-off and synergy of ecosystem services and driving forces in urban agglomerations in Northern China

Ecological Indicators, Год журнала: 2024, Номер 165, С. 112210 - 112210

Опубликована: Июнь 12, 2024

Язык: Английский

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Climate and soil stressed elevation patterns of plant species to determine the aboveground biomass distributions in a valley-type Savanna

Frontiers in Plant Science, Год журнала: 2024, Номер 15

Опубликована: Март 27, 2024

Introduction Extreme environments such as prolonged high temperatures and droughts can cause vulnerability of vegetation ecosystems. The dry-hot valleys Southwestern China, known for their extremely annual temperature, lack water, unique non-zonal “hot island” habitat in the global temperate zone, provide exceptional sites studying how plant adapts to dry hot environment. However, specific local biotic-environment relationships these regions remain incompletely elucidated. study aims evaluate valley-type Savanna species communities adapt long-term drought high-temperature stress environments. Methods investigated changes diversity communities’ aboveground biomass a along an elevation gradient Yuanmou valley Jinsha River basin, southwest China. Subsequently, general linear model was utilized simulate distribution pattern diversities constituent gradient. Finally, RDA VPH mothed were used impacts contributions environmental factors or variables on patterns. Results discussion field survey reveals altitudinal effect Savanna, with dominant shrubs herbs plants below 1700m, significant positive relationship between SR , Shannon-Wiener Simpson Pielou indices altitudes. Relatively, community did not increase significantly elevation, which mainly due decreased herbaceous elevation. Different regulators shrub-herbaceous functional groups made different patterns Savannas. Herbaceous are responsible maintaining ensuring stability vegetation. influence became more pronounced conditions varied Furthermore, influenced by soil climatic factors, whereas regulated groups. demonstrates that spatial formed result responses productive capacity retained climate-soil highlighting value Valley microcosm exploring intricate interactions evolution factors.

Язык: Английский

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