Quantifying the contributions of human activities and climate change to vegetation net primary productivity dynamics in China from 2001 to 2016

The Science of The Total Environment, Год журнала: 2021, Номер 773, С. 145648 - 145648

Опубликована: Фев. 5, 2021

Язык: Английский

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Spatiotemporal variation and influencing factors of vegetation dynamics based on Geodetector: A case study of the northwestern Yunnan Plateau, China

Ecological Indicators, Год журнала: 2021, Номер 130, С. 108005 - 108005

Опубликована: Июль 28, 2021

Exploring vegetation dynamics and their responses to different natural anthropogenic factors is crucial for understanding ecosystem processes in the context of global change. As an important ecological security barrier Southwest China, northwestern Yunnan Plateau (NYP) provides a variety services. In this study, we investigated spatiotemporal variation cover quantitatively analysed relative contributions potential influencing interactions change on NYP from 2005 2015 using novel spatial analysis method, Geodetector model (GDM). Additionally, most suitable types or ranges main that were conducive growth identified. Our results showed trend was generally negative, with rate − 0.0031 yr−1 during 11-year study period, spatially heterogeneous. Areas obviously decreasing trends almost twice as large those increasing (27.49% 14.37%, respectively) mainly concentrated southeastern northern Dali well central part Diqing. Vegetation primarily driven by soil type (24.8%), elevation (18.6%), geomorphic (16.1%), (13.2%), played weak role change, contribution less than 10%, demonstrating influences greater factors. Moreover, interaction pairwise more affecting did each factor individually. These findings are helpful better complex mechanisms providing scientific suggestions prevention degradation fragile ecosystems.

Язык: Английский

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Ecological restoration programs dominate vegetation greening in China

The Science of The Total Environment, Год журнала: 2022, Номер 848, С. 157729 - 157729

Опубликована: Июль 30, 2022

Язык: Английский

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Human activities have reduced plant diversity in eastern China over the last two millennia

Global Change Biology, Год журнала: 2022, Номер 28(16), С. 4962 - 4976

Опубликована: Май 21, 2022

Understanding the history and regional singularities of human impact on vegetation is key to developing strategies for sustainable ecosystem management. In this study, fossil modern pollen datasets from China are employed investigate temporal changes in composition, analogue quality, diversity during Holocene. Anthropogenic disturbance vegetation's responses also assessed. Results reveal that assemblages non-forest communities fail provide evidence western part (annual precipitation less than 400 mm and/or elevation more 3000 m.a.s.l.), as inferred stable quality analogues, principal components, species throughout For eastern China, proportion spectra with good analogues increases ca. 50% 80% last 2 millennia, indicating an enhanced intensity anthropogenic vegetation. This has caused become taxonomically diverse over space (reduced abundances arboreal taxa increased herbaceous taxa), highlighting a reduced south-north differentiation divergence past between regions China. We recommend care taken when basing development management region 2000 years, since humans have significantly disturbed period.

Язык: Английский

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Quantitative assessment of spatiotemporal dynamics in vegetation NPP, NEP and carbon sink capacity in the Weihe River Basin from 2001 to 2020

Journal of Cleaner Production, Год журнала: 2023, Номер 428, С. 139384 - 139384

Опубликована: Окт. 22, 2023

Язык: Английский

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Eco-engineering controls vegetation trends in southwest China karst

The Science of The Total Environment, Год журнала: 2021, Номер 770, С. 145160 - 145160

Опубликована: Янв. 14, 2021

Язык: Английский

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Vegetation greening in more than 94% of the Yellow River Basin (YRB) region in China during the 21st century caused jointly by warming and anthropogenic activities

Ecological Indicators, Год журнала: 2021, Номер 125, С. 107479 - 107479

Опубликована: Март 7, 2021

Reliable detection and observation of vegetation changes are increasingly essential for investigating the dynamic balance regional ecosystems. The Yellow River Basin (YRB) serves as an ecological barrier in northern China, where is extremely sensitive to climate change human activities. However, whether there has been a significant intensity dynamics YRB during 21st century how much anthropogenic disturbances contribute still poorly documented so far; thus, this work may hold far-reaching significance maintaining eco-balance China even all China. In study, based on annually seasonally averaged normalized deviation index (NDVI), comprehensive analysis was conducted detect trends derived by NDVI at six different time scales period 2000–2018 using Theil-Sen statistics, Mann-Kendall (M-K) method employed test levels greening browning. Subsequently, Moderate Resolution Imaging Spectroradiometer land cover data, situ climatic meteorological data socioeconomic factors were included explore driving forces through GeoDetector method. Our results show that experienced both browning with great spatial heterogeneity. More than 94% regions showed average rates 0.0040 yr−1 (NDVIAN) 0.0053 growing season (NDVIGS) century; trend more 71% (p < 0.05) total territory. This phenomenon mainly detected middle reaches YRB, effective use activities afforestation played vital roles. There seasonal disparity greening; spring (NDVISP) summer (NDVISU) exhibited largest rates. only small parts (0.9%, p 0.0015 NDVIAN 0.0021 NDVIGS, located Weihe basin lower sharp increase urban built-up areas contributed substantially trends. Overall, warming, increasing population jointly dominated YRB.

Язык: Английский

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Divergent impacts of droughts on vegetation phenology and productivity in the Yungui Plateau, southwest China

Ecological Indicators, Год журнала: 2021, Номер 127, С. 107743 - 107743

Опубликована: Апрель 27, 2021

Climate change has led to an increase in the severity and frequency of extreme weather events, especially droughts. Quantifying impacts droughts on vegetation activities is essential study effects climate ecosystem. Using Gross Primary Productivity (GPP), phenological metrics, Standardized precipitation evaporation index (SPEI) with multi-timescales, we evaluated divergent responses Yungui Plateau from 2001 2017. Besides, sensitivity drought was analyzed by maximum correlation coefficients between SPEI over plateau. Results revealed that overall changes start (SOS) end (EOS) growing season plateau exhibited nonsignificant during period. Meanwhile, two period caused a tremendous decrease GPP severe delays SOS EOS. Vegetation increased significantly eastern because strong resistance vegetation. Conversely, dynamics activities, were west due weak Preseason spring phenology played key role determining dynamics. before summer contributed delay EOS, while leads early Hence, preseason autumn nonlinearly impacted EOS interaction More importantly, stronger influences annual compared suggest are productivity Given continuous warming will lead more frequent droughts, it investigate resilience growth future work.

Язык: Английский

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Identifying vegetation restoration effectiveness and driving factors on different micro-topographic types of hilly Loess Plateau: From the perspective of ecological resilience

Journal of Environmental Management, Год журнала: 2021, Номер 289, С. 112562 - 112562

Опубликована: Апрель 13, 2021

Язык: Английский

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Impact of climatic changes and anthropogenic activities on ecosystem net primary productivity in India during 2001–2019

Ecological Informatics, Год журнала: 2022, Номер 70, С. 101732 - 101732

Опубликована: Июнь 26, 2022

Язык: Английский

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