Article
Ecology
Alison K. Post, Kristin P. Davis, Jillian LaRoe, David L. Hoover, Alan K. Knapp
Summary: The frequency and intensity of deluges are increasing globally as the climate warms. Semiarid grasslands are particularly sensitive to the timing and size of deluges, with postdeluge canopy greenness usually increasing linearly with larger deluge size. Grazing regimes did not significantly alter the responses to deluges in this study.
Article
Biodiversity Conservation
Yuxin Zhang, Juying Sun, Xueqian Song, Yafeng Lu
Summary: Anthropogenic activities and climate change have significant impacts on the productivity and sustainability of global forests. However, the specific effects of these factors along the elevation gradient are poorly understood. This study used remote sensing and statistical methods to investigate the drivers of forest changes and found that the altitude, temperature, and sunshine duration were crucial factors influencing forest greening and browning. Human activities had a greater impact on forest greening, while climate change had a larger impact on forest browning. The findings of this study provide important insights for global forest management and sustainability.
ECOLOGICAL INDICATORS
(2023)
Article
Geography, Physical
Haixia Zhao, Binjie Gu, Sarah Lindley, Tianyuan Zhu, Jinding Fan
Summary: Vegetation change is crucial for the global carbon cycle and climate. China has shown overall improvement in greening, particularly in the Loess Plateau and southwest regions. However, the Yangtze River Delta and Bohai Rim have not experienced as much growth. Natural conditions are favorable for vegetation growth, but current socioeconomic development has a negative impact. By understanding the factors affecting vegetation growth, we can guide future vegetation recovery in China and other similar countries.
JOURNAL OF GEOGRAPHICAL SCIENCES
(2023)
Article
Environmental Sciences
Wei Chen, Shuang Bai, Haimeng Zhao, Xuerong Han, Lihe Li
Summary: The study found that the vegetation coverage in Southwest China and its karst region experienced significant increases, with strong stability and sustainability in most areas. Human activities contributed more to vegetation restoration than climate change.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Lin Yang, Feixue Shen, Lei Zhang, Yanyan Cai, Fangxin Yi, Chenghu Zhou
Summary: The study utilized a structural equation modeling approach to quantify the impacts of natural environment, climate change, and human activities on vegetation coverage change in Jiangsu province, China from 2000 to 2015. The results revealed the significant influences of climate change and human activities on vegetation coverage change, with different driving mechanisms in northern and southern Jiangsu. Night light and road impact were identified as the best indicators of human activity change. This study provides a framework to better understand the complex interrelationships behind the spatial temporal change of vegetation coverage.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Biodiversity Conservation
Tomoki Sakiyama, Junko Morimoto, Osamu Watanabe, Nobuyuki Watanabe, Futoshi Nakamura
Summary: Species distribution models often overlook microrefugia, small areas where species can persist despite unfavorable regional conditions, due to a focus on broad-scale environmental variables. This study on the Japanese pika reveals the importance of considering local habitat conditions for conservation efforts, highlighting the potential for enhancing population persistence under climate change through the identification and protection of microrefugia.
GLOBAL ECOLOGY AND CONSERVATION
(2021)
Article
Ecology
Yuxin Zhang, Juying Sun, Yafeng Lu, Xueqian Song
Summary: This study reveals global-scale ecosystem changes and their dominant factors. Anthropogenic activities are the leading factors causing significant greening in ecosystems, while the impact of climate change on ecosystem greening is also significant. Temperature and soil moisture are the main factors influencing browning.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Environmental Sciences
Xin Mao, Hong-Li Ren, Ge Liu
Summary: This study investigates the interannual variation of vegetation on the Tibetan Plateau and its relationship with local climatic factors using satellite remote sensing data. The results show two primary patterns of vegetation cover, uniform and dipole, which are influenced by different climatic factors.
Article
Forestry
Yang Yi, Mingchang Shi, Xiaoding Yi, Jialin Liu, Guangrong Shen, Na Yang, Xinli Hu
Summary: Based on remote sensing data analysis of the middle reaches of the Yangtze River, it was found that the area of built-up land and plantations has increased, while the area of natural forests has decreased in the past 17 years. There is also a correlation between climate factors and vegetation growth. These findings provide reference for forest ecological protection in other areas.
Article
Forestry
Guangxing Ji, Shuaijun Yue, Jincai Zhang, Junchang Huang, Yulong Guo, Weiqiang Chen
Summary: The purpose of this study is to explore how vegetation growth in the Yarlung Zangbo River affects its runoff changes. The results show that: (1) both the NDVI and discharge in the river exhibit an increasing trend, with the annual runoff mutation occurring in 1997. (2) The Budyko parameter (n) has a significant negative correlation with NDVI in the river. (3) During the period of 1998-2015, the contributions of precipitation, evapotranspiration, NDVI, and n to the streamflow changes in the river are 5.26%, 1.14%, 43.04%, and 50.06% respectively. These findings can provide scientific guidance and support for the evaluation of ecological restoration measures and the management of water resources in the Yarlung Zangbo River.
Article
Ecology
Charlotte Gohr, Jeanette S. Blumroeder, Douglas Sheil, Pierre L. Ibisch
Summary: This study proposes a new method to estimate the temperature response and inertia of landscapes in high temperatures based on land cover share. Forests and wetlands were found to remain cool in high temperature ranges, contributing significantly to cooling effects in the region.
ECOLOGICAL INFORMATICS
(2021)
Article
Environmental Sciences
Leah Marajh, Yuhong He
Summary: Temperature change can have profound impacts on livelihood activities and human well-being. This study integrates satellite imagery and local temperature perceptions to understand spatial temperature and its impacts. It reveals significant temperature changes in mountainous and rural areas, with high temperatures in areas with low vegetation and low temperatures in areas with high vegetation.
Article
Geography, Physical
Xiaobin Hua, Pascal Sirguey, Ralf Ohlemuller
Summary: The study reveals that three different indigenous grassland types in New Zealand have shown consistent shifts in timing of key growing season stages over the past 16 years, with differences in magnitude of response. High-alpine grasslands exhibit the strongest response, with trends towards an earlier start and end of the growing season, as well as an increase in growing season length. Atmospheric conditions have varied effects on the start and end of the growing season in different seasons.
GISCIENCE & REMOTE SENSING
(2021)
Article
Environmental Sciences
Yiming Wang, Zengxin Zhang, Xi Chen
Summary: This study utilized efficient spatial analysis methods and trend analysis techniques to explore the driving mechanisms of vegetation changes in the Poyang Lake basin, revealing the significant impact of land-use types and other factors on vegetation restoration. Human activities dominated the process of vegetation change, with the results providing valuable insights for optimizing future ecological restoration projects in the region.
Article
Environmental Sciences
Wenqi Song, Yuhao Feng, Zhiheng Wang
Summary: In the past two decades, China has implemented various ecological restoration programs, resulting in significant greening of vegetation. The study found that in northern China and the southern coastal regions, ecological restoration programs have played a dominant role in vegetation greening. However, in southwestern China, Inner Mongolia, and the implementation regions of certain ecological restoration programs in northeastern China, temperature or precipitation has dominated vegetation greening. Except for the Three-North Shelterbelt Forest Program, the impact of ecological restoration programs on vegetation greening was stronger than the combined effects of temperature and precipitation changes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Ruonan Chen, Liangyun Liu, Xinjie Liu, Zhunqiao Liu, Lianhong Gu, Uwe Rascher
Summary: This study presents methods to accurately estimate sub-daily GPP from SIF in evergreen needleleaf forests and demonstrates that the interactions among light, canopy structure, and leaf physiology regulate the SIF-GPP relationship at the canopy scale.
REMOTE SENSING OF ENVIRONMENT
(2024)
Article
Environmental Sciences
Daniel L. Goldberg, Madankui Tao, Gaige Hunter Kerr, Siqi Ma, Daniel Q. Tong, Arlene M. Fiore, Angela F. Dickens, Zachariah E. Adelman, Susan C. Anenberg
Summary: A novel method is applied in this study to directly use satellite data to evaluate the spatial patterns of urban NOx emissions inventories. The results show that the 108 spatial surrogates used by NEMO are generally appropriate, but there may be underestimation in areas with dense intermodal facilities and overestimation in wealthy communities.
REMOTE SENSING OF ENVIRONMENT
(2024)
Article
Environmental Sciences
Zhuoyue Hu, Xiaoyan Li, Liyuan Li, Xiaofeng Su, Lin Yang, Yong Zhang, Xingjian Hu, Chun Lin, Yujun Tang, Jian Hao, Xiaojin Sun, Fansheng Chen
Summary: This paper proposes a whisk-broom imaging method using a long-linear-array detector and high-precision scanning mirror to achieve high-resolution and wide-swath thermal infrared data. The method has been implemented in the SDGs satellite and has shown promising test results.
REMOTE SENSING OF ENVIRONMENT
(2024)
Article
Environmental Sciences
Dandan Wang, Leiqiu Hu, James A. Voogt, Yunhao Chen, Ji Zhou, Gaijing Chang, Jinling Quan, Wenfeng Zhan, Zhizhong Kang
Summary: This study evaluates different schemes for determining model coefficients to quantify and correct the anisotropic impact from remote sensing LST for urban applications. The schemes have consistent results and accurately estimate parameter values, facilitating the broadening of parametric models.
REMOTE SENSING OF ENVIRONMENT
(2024)
Article
Environmental Sciences
Jamie Tolan, Hung - Yang, Benjamin Nosarzewski, Guillaume Couairon, Huy V. Vo, John Brandt, Justine Spore, Sayantan Majumdar, Daniel Haziza, Janaki Vamaraju, Theo Moutakanni, Piotr Bojanowski, Tracy Johns, Brian White, Tobias Tiecke, Camille Couprie
Summary: Vegetation structure mapping is crucial for understanding the global carbon cycle and monitoring nature-based approaches to climate adaptation and mitigation. This study presents the first high-resolution canopy height maps for California and Sao Paulo, achieved through the use of very high resolution satellite imagery and aerial lidar data. The maps provide valuable tools for forest structure assessment and land use monitoring.
REMOTE SENSING OF ENVIRONMENT
(2024)
Article
Environmental Sciences
Regina Eckert, Steffen Mauceri, David R. Thompson, Jay E. Fahlen, Philip G. Brodrick
Summary: In this paper, a mathematical framework is proposed to improve the retrieval of surface reflectance and atmospheric parameters by leveraging the expected spatial smoothness of the atmosphere. Experimental results show that this framework can reduce the surface reflectance retrieval error and surface-related biases.
REMOTE SENSING OF ENVIRONMENT
(2024)
Article
Environmental Sciences
Chongya Jiang, Kaiyu Guan, Yizhi Huang, Maxwell Jong
Summary: This study presents the Field Rover method, which uses vehicle-mounted cameras to collect ground truth data on crop harvesting status. The machine learning approach and remote sensing technology are employed to upscale the results to a regional scale. The accuracy of the remote sensing method in predicting crop harvesting dates is validated through comparison with satellite data.
REMOTE SENSING OF ENVIRONMENT
(2024)
Article
Environmental Sciences
Oksana V. Lunina, Anton A. Gladkov, Alexey V. Bochalgin
Summary: In this study, an unmanned aerial vehicle (UAV) was used to detect and map surface discontinuities with displacements of a few centimeters, indicating the presence of initial geological deformations. The study found that sediments of alluvial fans are susceptible to various tectonic and exogenous deformational processes, and the interpretation of ultra-high resolution UAV images can help recognize low-amplitude brittle deformations at an early stage. UAV surveys are critical for discerning neotectonic activity and its related hazards over short observation periods.
REMOTE SENSING OF ENVIRONMENT
(2024)
Article
Environmental Sciences
Feng Zhao, Weiwei Ma, Jun Zhao, Yiqing Guo, Mateen Tariq, Juan Li
Summary: This study presents a data-driven approach to reconstruct the terrestrial SIF spectrum using measurements from the TROPOMI instrument on Sentinel-5 precursor mission. The reconstructed SIF spectrum shows improved spatiotemporal distributions and demonstrates consistency with other datasets, indicating its potential for better understanding of the ecosystem function.
REMOTE SENSING OF ENVIRONMENT
(2024)
Article
Environmental Sciences
Stephen Stehman, John E. Wagner
Summary: This article investigates optimal sample allocation in stratified random sampling for estimation of accuracy and proportion of area in applications where the target class is rare. The study finds that precision of estimated accuracy has a stronger impact on sample allocation than estimation of proportion of area, and the trade-offs among these estimates become more pronounced as the target class becomes rarer. The results provide quantitative evidence to guide sample allocation decisions in specific applications.
REMOTE SENSING OF ENVIRONMENT
(2024)
Article
Environmental Sciences
Jingyao Zheng, Tianjie Zhao, Haishen Lu, Defu Zou, Nemesio Rodriguez-Fernandez, Arnaud Mialon, Philippe Richaume, Jianshe Xiao, Jun Ma, Lei Fan, Peilin Song, Yonghua Zhu, Rui Li, Panpan Yao, Qingqing Yang, Shaojie Du, Zhen Wang, Zhiqing Peng, Yuyang Xiong, Zanpin Xing, Lin Zhao, Yann Kerr, Jiancheng Shi
Summary: Soil moisture and freeze/thaw (F/T) play a crucial role in water and heat exchanges at the land-atmosphere interface. This study reports the establishment of a wireless sensor network for soil moisture and temperature over the permafrost region of Tibetan Plateau. Satellite-based surface soil moisture (SSM) and F/T products were evaluated using ground-based measurements. The results show the reliability of L-band passive microwave SSM and F/T products, while existing F/T products display earlier freezing and later thawing, leading to unsatisfactory accuracy.
REMOTE SENSING OF ENVIRONMENT
(2024)