Remote Sensing of Environmental Changes in Cold Regions: Methods, Achievements and Challenges

Du, Jinyang; Watts, Jennifer D.; Jiang, Lingmei; Lu, Hui; Cheng, Xiao; Duguay, Claude R.; Farina, Mary; Qiu, Yubao; Kim, Youngwook; Kimball, J. S.; Tarolli, Paolo

doi:10.3390/rs11161952

Cited by 38 publications

(23 citation statements)

References 299 publications

(323 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Remote sensing addresses this difficulty by making spatially dense measurements over vast regions. Previous remote sensing studies have inferred permafrost extent from the instantaneous zero isotherm at the land surface or from changes in the dielectric marking the phase transition of liquid water to ice [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Toward the Detection of Permafrost Using Land-Surface Temperature Mapping

et al. 2020

View full text Add to dashboard Cite

Permafrost is degrading under current warming conditions, disrupting infrastructure, releasing carbon from soils, and altering seasonal water availability. Therefore, it is important to quantitatively map the change in the extent and depth of permafrost. We used satellite images of land-surface temperature to recognize and map the zero curtain, i.e., the isothermal period of ground temperature during seasonal freeze and thaw, as a precursor for delineating permafrost boundaries from remotely sensed thermal-infrared data. The phase transition of moisture in the ground allows the zero curtain to occur when near-surface soil moisture thaws or freezes, and also when ice-rich permafrost thaws or freezes. We propose that mapping the zero curtain is a precursor to mapping permafrost at shallow depths. We used ASTER and a MODIS-Aqua daily afternoon land-surface temperature (LST) timeseries to recognize the zero curtain at the 1-km scale as a “proof of concept.” Our regional mapping of the zero curtain over an area around the 7000 m high volcano Ojos del Salado in Chile suggests that the zero curtain can be mapped over arid regions of the world. It also indicates that surface heterogeneity, snow cover, and cloud cover can hinder the effectiveness of our approach. To be of practical use in many areas, it may be helpful to reduce the topographic and compositional heterogeneity in order to increase the LST accuracy. The necessary finer spatial resolution to reduce these problems is provided by ASTER (90 m).

show abstract

Section: Introductionmentioning

confidence: 99%

Toward the Detection of Permafrost Using Land-Surface Temperature Mapping

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The law of limiting factors [ 69 , 70 ] works well in stationary conditions. With the rapid change in limiting factors (such as air temperature or precipitation), forest ecosystems are in a transitional (non-stationary) state, in which some factors that are still not significant may come to the fore, and the end result may be determined by other limiting factors [ 71 , 72 ]. Increasing tree diversity is recommended as the best option for an uncertain future [ 73 ]; otherwise we may also lose valuable genetic pools [ 74 ].…”

Section: Resultsmentioning

confidence: 99%

Are There Differences in the Reaction of the Light-Tolerant Subgenus Pinus spp. Biomass to Climate Change as Compared to Light-Intolerant Genus Picea spp.?

Usoltsev

Lin

Shobairi

et al. 2020

Plants

View full text Add to dashboard Cite

Currently, the problem of the impact of climate change on the productivity of forest ecosystems and their carbon-depositing capacity is far from being solved. Therefore, this paper presents the models for the stand biomass of the two-needled subgenus’ (Pinus spp.) and the genus Picea spp.’s trends along the trans-Eurasian hydrothermal gradients, designed for pure stands in a number of 2110- and 870-sample plots with Pinus and Picea correspondingly. It was found that in the case of an increase in mean winter temperatures by 1 °C, pine and spruce respond by increasing the biomass of most components, and in the case of an increase in the annual sum of precipitation by 100 mm, the total, aboveground, stem and root biomasses of pine and spruce react the same way, but crown biomass reacts in the opposite way. Therefore, all identified trends are species-specific.

show abstract

“…The law of limiting factors (Liebig 1840, Shelford 1913 works well in stationary conditions. With a rapid change in limiting factors (such as air temperature or precipitation), forest ecosystems are in a transitional (nonstationary) state, in which some factors that were still not signi cant may come to the fore, and the end result may be determined by other limiting factors (Odum, 1971, Du et al, 2019.…”

Section: Let Us Try To Link the Obtained Counterintuitive Patterns Ofmentioning

confidence: 99%

Changes in foliage’s biomass of two-needled pine subgenus (Pinus spp.) and genus Betula spp. along the gradients of winter temperature and precipitation: inter-genera paradox in the forests of Eurasia

Усольцев¹,

Chen

Shobairi

et al. 2020

Preprint

View full text Add to dashboard Cite

Background The main pool of publications on this topic is related to the assessment of possible changes in vegetation growth under the influence of climate, but few of them actually took account the impacts of global change on species composition and morphological (taxational) structure, so led to an unanswered question, how the biological productivity of the forests will change if air temperature and/or precipitation change up to a certain extent. This is a subject of the study. Methods In this study, our database is used in a number of 2,110 sample plots for pine and 510 for birch. In each sample plot, the biomass of the forest stands was positioned in maps of January mean temperature isolines and to mean annual precipitation ones, and the input data matrix was compiled in which the values of biomass components and of stand taxation characteristics are mated with corresponding values of climate indices. The matrix was then subjected to regression analysis. Results It is stated, in cold and insufficiently moisture–rich climate zones, temperature increase causes a decrease in biomass of Pinus foliage, and in other regions its increase, but the Betula pattern is the opposite. With an increase in precipitation, the Pinus foliage biomass in warm zones increase, and in cold ones it decreases, but the Betula pattern is the opposite. Conclusion The biomass of pine and birch stands change in gradients of winter temperature and precipitation as propeller-formed but opposite patterns, which can be explained by the different winter physiology of evergreen and deciduous species.

show abstract

Remote Sensing of Environmental Changes in Cold Regions: Methods, Achievements and Challenges

Cited by 38 publications

References 299 publications

Toward the Detection of Permafrost Using Land-Surface Temperature Mapping

Toward the Detection of Permafrost Using Land-Surface Temperature Mapping

Are There Differences in the Reaction of the Light-Tolerant Subgenus Pinus spp. Biomass to Climate Change as Compared to Light-Intolerant Genus Picea spp.?

Changes in foliage’s biomass of two-needled pine subgenus (Pinus spp.) and genus Betula spp. along the gradients of winter temperature and precipitation: inter-genera paradox in the forests of Eurasia

Contact Info

Product

Resources

About