Results 31 to 40 of about 2,808 (262)

Microbial Contribution to Soiling and Its Impact on Photovoltaic Module Soiling in Arid Zones of the Atacama Desert

Advanced Sustainable Systems, EarlyView.
Microorganisms colonizing photovoltaic surfaces in the Atacama desert form biofilms that enhance particle adhesion and reduce energy yield. This study identifies UV‐resistant bacteria and carotenoid‐producing strains that interfere with PV performance.
Douglas Olivares, Ricardo Ortíz, Luis Rojas‐Araya, María Teresa Mata, Felipe Galleguillos, Jaime Llanos, Carlos Portillo, Valentina Escobar, Aitor Marzo   +8 more
wiley   +1 more source

Divergent Responses of Bacterial Communities to Permafrost Degradation and Their Associations With Carbon Across Vertical Profiles

Advanced Science, EarlyView.
Bacterial α‐diversity decreases, but stochasticity and community stability increase across the 15 m‐depth vertical profiles and along the degraded gradient within the active layer. The abundance and interaction of core taxa mainly control community stability in the active and permafrost layers, respectively.
Shengyun Chen, Yuzheng Gu, Ali Bahadur, Enyan Liu, Tonghua Wu, Xiaofan Zhu, Yuanqiang Zou, Hewei Liang, Peijie Wei, Linwei Wu, Qingbai Wu, Peizhi Yang, Hongyan Yu, Yunfeng Yang   +13 more
wiley   +1 more source

Threshold-dependent shifts in ecosystem stability across aridity gradients on the Mongolian Plateau

Communications Earth & Environment
Global aridification threatens dryland ecosystems biodiversity and stability, yet the influence of multidimensional biodiversity on stability across aridity gradients is complex and context-dependent.
Wanjie Chen, Liji Wu, Bing Wang, Ying Wu, Yongfei Bai, Dima Chen   +5 more
doaj   +1 more source

Water‐Efficient Smart Drip Irrigation Enabled by a Low‐Power and High‐Efficiency Flexible Electromagnetic Actuator

Advanced Science, EarlyView.
Water scarcity poses a critical threat to global food security. A low‐power, flexible electromagnetic actuator is presented for smart drip irrigation systems. The device achieves precise, wide‐range flow modulation (0.05–5.8 mL/min) in response to real‐time plant demands, reducing water consumption compared to conventional flood irrigation.
Duo Chen, Xubin Zhu, Minwei Zhang, Kerui Li, Qinghong Zhang, Yaogang Li, Chengyi Hou, Hongzhi Wang   +7 more
wiley   +1 more source

Divergent driving mechanisms of community temporal stability in China's drylands

Environmental Science and Ecotechnology
Climate change and anthropogenic activities are reshaping dryland ecosystems globally at an unprecedented pace, jeopardizing their stability. The stability of these ecosystems is crucial for maintaining ecological balance and supporting local communities.
Kai Wang, Cong Wang, Bojie Fu, Jianbei Huang, Fangli Wei, Xuejing Leng, Xiaoming Feng, Zongshan Li, Wei Jiang   +8 more
doaj   +1 more source

Global Nitrogen Deposition Promotes Carbon Sink Formation in Terrestrial Ecosystems

Advanced Science, EarlyView.
Nitrogen deposition alleviates ecosystem N limitation and enhances carbon sinks. Using 829 observations, we show 36% of deposited N is retained globally (39.15 Tg N yr−1), with distinct NHx and NOy contributions. This retention drives a terrestrial C sink of 0.88 Pg C yr−1 (25.48%), highlighting the importance of pool‐specific C:N stoichiometry ...
Lei Li, Mingyu Xie, Nan Jia, Li‐Dong Mo, Qiang Yu, Fanjiang Zeng, Xiangyi Li   +6 more
wiley   +1 more source

Optimal Grazing Exclusion Duration to Enhance Soil Carbon Sequestration in Degraded Grasslands

Advanced Science, EarlyView.
Across China, grazing exclusion reaches the national mean soil organic carbon recovery benchmark sooner in high‐MAP regions (> 500 mm), but recovery is much slower where MAP < 300 mm. Scaling this strategy to 70% of China's degraded grasslands would sequester about 1.52 Pg of soil carbon over 10 years—roughly 17% of annual global fossil‐fuel emissions.
Bin Zhang, Chongzhi Sun, Dongmei Xue, Paul Christiaan Struik, Tongrui Zhang, Jiayue Liu, Tingting Xing, Ziyang Liu, Shiming Tang, Ke Jin   +9 more
wiley   +1 more source

Temporal dynamics of hydrological threshold events [PDF]

Hydrology and Earth System Sciences, 2007
The episodic nature of hydrological flows such as surface runoff and preferential flow is a result of the nonlinearity of their triggering and the intermittency of rainfall.
G. S. McGrath, C. Hinz, M. Sivapalan
doaj  

Supervised NDVI Composite Thresholding for Arid Region Vegetation Mapping

Engineering, Technology & Applied Science Research
Temporal-vegetation mapping bearing temporal-related features is important because it helps to understand the global climate changes that drive resource management and habitat conservation. This paper presents a Supervised Normalized Difference Vegetation Index (SNDVI) approach for mapping the vegetation cover in arid environment regions.
Ragab Khalil, Mohammad Shahiq Khan, Yassin Hasan, Nacer Nacer, Sheroz Khan   +4 more
openaire   +1 more source

Temperature, aridity thresholds, and population growth dynamics in China over the last millennium [PDF]

Climate Research, 2009
The relationship between climate and population has long been discussed, but rarely has it been quantitatively measured. Hence, the relationship remains ambiguous. In the present study, we employ fine-grained temperature, aridity threshold, and population data, together with logistic models and spatial statistics, to quantitatively explore how far ...
Lee, HF, Fok, L, Zhang, DD
openaire   +3 more sources