Vegetation Dynamics and Recovery Potential in Arid and Semi-Arid Northwest China DOI Creative Commons

Xiran Sui,

Qinghai Xu, Hui Tao

et al.

Plants, Journal Year: 2024, Volume and Issue: 13(23), P. 3412 - 3412

Published: Dec. 5, 2024

The arid and semi-arid regions of northwest China are characterized by sparse vegetation fragile ecosystems, making them highly susceptible to the impacts climate change human activities. Based on observed meteorological data, Normalized Difference Vegetation Index (NDVI), Lund-Potsdam-Jena dynamic global model (LPJ), a recovery potential model, MK trend test method, this study investigated spatiotemporal distribution in its relationship with warming increasing precipitation. results indicated that significantly increased, greening closely related trends wetting during 1982-2019. However, declined due change. Central southern Xinjiang central Qinghai exhibited higher grassland potential, while Gobi Desert areas had lower potential. eastern part was sensitive drought, moderate growth Remote sensing data 2.3% increase coverage region, an average index (IVCP) 0.31. According LPJ for 0.14, indicating 1.1% improvement coverage. Overall, facilitated China, particularly mountainous areas. findings provide valuable insights ecological restoration efforts offer practical guidance combating desertification enhancing sustainable development. Moreover, these underline importance incorporating into regional policy-making improve environmental resilience face ongoing

Language: Английский

Five Years of Natural Vegetation Recovery in Three Forests of Karst Graben Area and Its Effects on Plant Diversity and Soil Properties DOI Open Access
Xiaorong Yang,

Rouzi-Guli Turmuhan,

Lina Wang

et al.

Forests, Journal Year: 2025, Volume and Issue: 16(1), P. 91 - 91

Published: Jan. 8, 2025

In recent decades, excessive human activities have led to large-scale rocky desertification in karst areas. Vegetation restoration is one of the most important ways control desertification. this study, vegetation surveys were conducted on three typical plantations Jianshui County, Yunnan Province, a fault basin area, 2016 and 2021. The Pinus massoniana forest (PM), yunnanensis (PY), mixed forests Quercus variabilis (MF). Plant diversity soil nutrients compared during five-year period. This paper mainly draws following results: plant PM, PY, MF increased. With increase time, new species appeared tree layer, shrub herb layer forests. Tree with smaller importance values gradually withdrew from community. Patrick index, Simpson Shannon–Wiener index increased significantly. Pielou changed highest for PM PY There was no significant difference layer. bulk density (BD) decreased. total porosity (TP), capillary (CP), non-capillary (NCP). pH significantly 5.88~6.24 7.24~7.34. decreased (p < 0.05). contents nitrogen (TN) ammonium (NH4+-N) content nitrate (NO3−-N) Total phosphorus (TP) MF. available (AP) general, physical chemical properties also been improved. results can provide data support

Language: Английский

Citations

0
Responses of karst ecosystem carbon sinks to climate change and human activities in China DOI
Minghui Li,

Qiu Tan,

Guangjie Luo

et al.

Chinese Science Bulletin (Chinese Version), Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
Contribution of microbial necromass to soil organic carbon and its influencing factors during plantation recovery in a subtropical rocky desertification region DOI
Junjie Lei,

Xiaoqian Gao,

Ting He

et al.

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 210, P. 106099 - 106099

Published: April 14, 2025

Language: Английский

Citations

0
Regional ecological risk assessment for Guangxi (China) based on entropy method and the pressure-capital-vulnerability-response model DOI
Hui Wang

Ecological Indicators, Journal Year: 2025, Volume and Issue: 175, P. 113542 - 113542

Published: May 3, 2025

Language: Английский

Citations

0
Microbial Necromass Nitrogen Accumulation and Its Response to Soil Multifunctionality Following Plantation Restoration in a Subtropical Karst Region DOI Open Access
Junjie Lei, Yuanying Peng, Peng Dang

et al.

Land Degradation and Development, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

ABSTRACT Microbial necromass nitrogen (MNN) is increasingly recognized as a major source of soil N, playing crucial role in N sequestration and sustaining balance. However, quantitative data on the contribution MNN to total its relationship with multifunctionality (SMF) karst plantation ecosystems remain lacking. In this study, (measured via amino sugar analysis) SMF (calculated using mean value method) were determined across five plantations unafforested land (control) Wuling Mountains subtropical China. The content ranged from 1.02 1.67 g kg −1 , contributing 53.8% 75.4% Cinnamomum camphora pure forest exhibiting highest values among all stand types control. afforestation enhanced nutrient provision, microbial activity, biomass, increasing by 54% compared functional parameters generally higher organic horizon than topsoil subsoil, was greater subsoil. Enzyme stoichiometry ratios indicated that P limitation prevalent both control soils, positively correlated C/P N/P ( p < 0.001). Increases closely associated SMF, encompassing available (AN) being key predictor accumulation. partial least squares path model revealed provision contributed accumulation, AN had direct effect coefficient 0.72 it 0.01). This work underscored critical potential support ecosystem functioning region.

Language: Английский

Citations

0
Ecoenzymatic stoichiometry reveals the exacerbation of microbial C and N limitations by moss crusts in degraded karst ecosystems DOI

Minghao Deng,

Jiaojiao Wu, Xin Zhao

et al.

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 209, P. 106031 - 106031

Published: March 15, 2025

Language: Английский

Citations

0
Effects of vegetation restoration on soil microbial necromass carbon and organic carbon in grazed and degraded sandy land DOI
Hongyi Zhou, Qing Qu, Hongwei Xu

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 382, P. 125380 - 125380

Published: April 16, 2025

Language: Английский

Citations

0
Microclimatic Influences on Soil Nitrogen Dynamics and Plant Diversity Across Rocky Desertification Gradients in Southwest China DOI Creative Commons
Qian Wu,

Chengjiao Rao,

Wende Yan

et al.

Plants, Journal Year: 2025, Volume and Issue: 14(8), P. 1251 - 1251

Published: April 20, 2025

Soil active nitrogen (N) fractions are essential for plant growth and nutrient cycling in terrestrial ecosystems. While previous studies have primarily focused on the impact of vegetation restoration soil karst ecosystems, role microclimate variation rocky desertification areas has not been well explored. This study investigates key biotic abiotic factors across four grades desertification—non-rocky (NRD), light (LRD), moderate (MRD), intense (IRD)—within two distinct microclimates: a dry-hot valley humid monsoon zone region Guizhou Province, China. We evaluate organic carbon (SOC), total (TN), phosphorus (TP), nitrate (NO3−-N), ammonium (NH4+-N), microbial biomass (MBN), soluble (SON), diversity. Results showed that SOC, TN, TP were significantly higher IRD areas. NO3−-N, MBN, SON initially decreased before increasing, with consistent MBN valley. NH4+-N did differ under NRD but was LRD, MRD, IRD. The had most grades. Microclimate influenced N, levels LRD MRD conditions. Plant diversity regeneration varied markedly between microclimates. In valley, Artemisia dominated herbaceous regeneration, especially Conversely, more diverse Bidens prevalent Despite declining desertification, displayed greater resilience. These findings highlight influencing dynamics gradients, offering insights strategies

Language: Английский

Citations

0
Vegetation Dynamics and Recovery Potential in Arid and Semi-Arid Northwest China DOI Creative Commons

Xiran Sui,

Qinghai Xu, Hui Tao

et al.

Plants, Journal Year: 2024, Volume and Issue: 13(23), P. 3412 - 3412

Published: Dec. 5, 2024

The arid and semi-arid regions of northwest China are characterized by sparse vegetation fragile ecosystems, making them highly susceptible to the impacts climate change human activities. Based on observed meteorological data, Normalized Difference Vegetation Index (NDVI), Lund-Potsdam-Jena dynamic global model (LPJ), a recovery potential model, MK trend test method, this study investigated spatiotemporal distribution in its relationship with warming increasing precipitation. results indicated that significantly increased, greening closely related trends wetting during 1982-2019. However, declined due change. Central southern Xinjiang central Qinghai exhibited higher grassland potential, while Gobi Desert areas had lower potential. eastern part was sensitive drought, moderate growth Remote sensing data 2.3% increase coverage region, an average index (IVCP) 0.31. According LPJ for 0.14, indicating 1.1% improvement coverage. Overall, facilitated China, particularly mountainous areas. findings provide valuable insights ecological restoration efforts offer practical guidance combating desertification enhancing sustainable development. Moreover, these underline importance incorporating into regional policy-making improve environmental resilience face ongoing

Language: Английский

Citations

2