Results 61 to 70 of about 21,178 (146)

Evaluation of Three MODIS-Derived Vegetation Index Time Series for Dryland Vegetation Dynamics Monitoring

Remote Sensing, 2015
Understanding the spatial and temporal dynamics of vegetation is essential in drylands. In this paper, we evaluated three vegetation indices, namely the Normalized Difference Vegetation Index (NDVI), the Soil-Adjusted Vegetation Index (SAVI) and the ...
Linlin Lu, Claudia Kuenzer, Cuizhen Wang, Huadong Guo, Qingting Li   +4 more
doaj   +1 more source

Zagros Grass Index—A New Vegetation Index to Enhance Fire Fuel Mapping: A Case Study in the Zagros Mountains

Sustainability
Annually, the oak forests of the Zagros Mountains chains in western Iran and northeastern Iraq face recurring challenges posed by forest fires, particularly in the Kurdo–Zagrosian forests in western Iran and northeastern Iraq. Assessing fire susceptibility relies significantly on vegetation conditions. Integrating in situ data, Remote Sensing (RS) data,
Iraj Rahimi, Lia Duarte, Ana Cláudia Teodoro   +2 more
openaire   +1 more source

Using Bi-Temporal Lidar to Evaluate Canopy Structure and Ecotone Influence on Landsat Vegetation Index Trends Within a Boreal Wetland Complex

Applied Sciences
Wetland ecosystems are sensitive to climate variation, yet tracking vegetation type and structure changes through time remains a challenge. This study examines how Landsat-derived vegetation indices (NDVI and EVI) correspond with lidar-derived canopy ...
Farnoosh Aslami, Chris Hopkinson, Laura Chasmer, Craig Mahoney, Daniel L. Peters   +4 more
doaj   +1 more source

The Generalized Difference Vegetation Index (GDVI) for Dryland Characterization

Remote Sensing, 2014
A large number of vegetation indices have been developed and widely applied in terrestrial ecosystem research in the recent decades. However, a certain limitation was observed while applying these indices in research in dry areas due to their low ...
Weicheng Wu
doaj   +1 more source

Phenology-Based Vegetation Index Differencing for Mapping of Rubber Plantations Using Landsat OLI Data

Remote Sensing, 2015
Accurate and up-to-date mapping and monitoring of rubber plantations is challenging. In this study, we presented a simple method for rapidly and accurately mapping rubber plantations in the Xishuangbanna region of southwest China using phenology-based ...
Hui Fan, Xiaohua Fu, Zheng Zhang, Qiong Wu   +3 more
doaj   +1 more source

Response of solar-induced chlorophyll fluorescence-based spatial and temporal evolution of vegetation in Xinjiang to multiscale drought

Frontiers in Plant Science
Climate change and human activities have increased droughts, especially overgrazing and deforestation, which seriously threaten the balance of terrestrial ecosystems.
Cong Xue, Cong Xue, Mei Zan, Mei Zan, Yanlian Zhou, Zhizhong Chen, Zhizhong Chen, Jingjing Kong, Jingjing Kong, Shunfa Yang, Shunfa Yang, Lili Zhai, Lili Zhai, Jia Zhou, Jia Zhou   +14 more
doaj   +1 more source

VAWI_log: A Log-Transformed LSWI–EVI Index for Improved Surface Water Mapping in Agricultural Environments

Remote Sensing
Detecting surface water beneath vegetation canopies remains a major challenge for widely used water indices, which often underestimate water obscured by vegetation. This limitation is further compounded by the scarcity of reliable in situ data needed for
Alexis Declaro, Zachary Brown, Shinjiro Kanae   +2 more
doaj   +1 more source

A Remote Sensing-Based Potato Classification Approach Integrating a Novel ONDVI with Multiple Vegetation Index Combinations

Remote Sensing
Potato is one of the major staple crops, and precise identification of potato planting areas is crucial for yield monitoring and future planting planning.
Yixuan Chen, Lingyuan Zhang, Rundong Zhang, Xiwen Duan, Minghui Liu, Chenwei Xu, Shixian Lu, Jianxiong Wang   +7 more
doaj   +1 more source

Accounting for exact vegetation index recording date to enhance evaluation of time-lagged and accumulated climatic effects on global vegetation greenness

Environmental Research
Considering time-lag and accumulation effects of climate is crucial for accurately evaluating vegetation dynamics under global climate change. Most studies investigate these mechanisms by examining the explanatory power of the overall climatic conditions of the same month of the day at which the vegetation index is recorded, or the preceding month(s ...
Lan Zhang, Xiangping Hu, Francesco Cherubini   +2 more
openaire   +3 more sources

Enhanced Blue Band Vegetation Index (The Re-Modified Anthocyanin Reflectance Index (RMARI)) for Accurate Farmland Shelterbelt Extraction

Remote Sensing
Farmland shelterbelts are aimed at farmland protection and productivity improvement, environmental protection and ecological balance, as well as land use planning and management. Farmland shelterbelts play a vital role in determining the structural integrity and overall effectiveness of farmland, and assessing the dynamic changes within these ...
Xinle Zhang, Jiming Liu 0008, Linghua Meng, Chuan Qin, Zeyu An, Yihao Wang 0005, Huanjun Liu   +6 more
openaire   +2 more sources