Abstract The landscape pattern of the Black‐necked Crane ( Grus nigricollis ) habitat in China changed at different spatial scales and long‐term periods due to natural factors human activities, reduction fragmentation threatened survival Cranes. driving individual population changes Cranes remain be studied. In this paper, based on remote sensing data land use from 1980 2020, over 40 years were analyzed two using cover transfer matrix index. correlation between was analyzed. most obvious...

The instabilities of soil specimens in laboratory or made geotechnical structures field are always numerically simulated by the classical continuum mechanics-based constitutive models with finite element method. However, mesh dependency problems inevitably encountered when strain localized failure occurs especially post-bifurcation regime. In this paper, an attempt is to summarize several main numerical regularization techniques used alleviating problems, i.e., viscosity theory, nonlocal...

The Sentinel-1 constellation can provide numerous high-resolution C-band synthetic aperture radar (SAR) data with long-term continuity and freely, thus showing a cost-effective solution for the coastal monitoring at high or moderate spatial resolutions. major goal is to improve estimates of shallow water depth SAR applications. We present an algorithm that based on linear dispersion relation between swell parameters like wavelength, direction, period estimate using multitemporal short...

Biodiversity in China is analyzed based on the components of Dynamic Habitat Index (DHI). First, observed field survey spatial patterns species richness including threatened are presented to test their linear relationship with remote sensing DHI (2001–2010 MODIS). Areas a high cumulative component associated relatively richness, and increases regions frequently varying levels component. The analysis geographical statistical distributions yields following results interdependence, polarization...

This paper presents a shallow water depth estimation methodology using S-band Synthetic Aperture Radar (SAR) data from the HJ-1C satellite. It is based on shoaling and refraction of long surface gravity waves as they propagate shoreward. A two-scale Bragg scattering model used to describe imaging process by SAR. By computing Fast Fourier Transformation (FFT) for selected sub image, wavelength direction wave can be retrieved two-dimensional (2D) spectra with tracking technology. Shallow...

Laboratory‐validated data on the survival, development and hatching responses of fertilized Pacific cod Gadus macrocephalus eggs from northern Japan stock were determined through an incubation experiment. The optimum temperature for survival until ranged 4 to 8° C. No significant difference in rates was found between populations Mutsu Bay, Japan, western Canadian coastal waters even though samples may belong different G. stocks. larvae hatched asynchronously egg batches despite under same...

This paper focuses on the analysis and evaluation of China's HJ-1C SAR satellite with respect to oil spill identification. Six images (S band, VV Pol, StripMap mode, 5 m resolution, Level-2) in a track December 2012, covering coastal region Fujian Province China, are used this study.A comparison detectability between Envisat ASAR was investigated by introducing Damping Coefficient s based intensity image.The difference -1.3 dB two samples considered revealed an expected result accordance...

Energy availability at trophic and hydrologic level dominates species richness gradients by constraining food resources, regulating population sizes extinction rates. Remote sensing datasets have mapped vegetation productivities as a proxy for energy availability, example, using Dynamic Habitat Indices (DHIs). Considering the sparse across drylands, we developed indices of Land surface temperature (ILST) based on daytime land from Terra Aqua Moderate Resolution Imaging Spectroradiometer...

Fully polarimetric synthetic aperture radar (SAR) can provide detailed information on scattering mechanisms that could enable the target or structure to be identified. This paper presents a method detect underwater topography in coastal areas using high resolution fully SAR data, while less prior is required. The based shoaling and refraction of long surface gravity waves as they propagate shoreward. First, component obtained by polarization decomposition. Then, wave fields are retrieved...

Understory vegetation plays an important ecological role in maintaining the diversity of ecosystem, stability ecosystem services, and accumulation nutrient elements, as part a forest ecosystem. In this study, new method recognizing areas without understory is proposed. The makes full use advantages spectral characteristics, spatial structure information temporal resolution UAV images, can quickly simply distinguish understory, cover. Combined with fractional coverage (FVC) dispersion, no...

This paper investigates the S-band backscattering variation of wheat in its four growing seasons, with purpose providing a reliable method for identification and monitoring using satellite synthetic aperture radar (SAR) data. The study is based on tower-based scatteromerer experiment conducted fields at remote sensing test site Institute applications Chinese academy sciences. During entire season, we carried out experiments got great amount backscatter data including HH VV polarization....

Water-energy dynamics broadly regulate species richness gradients but are being altered by climate change and anthropogenic activities; however, the current methods used to quantify this phenomenon overlook non-linear of climatic time-series data. To analyze gradient in China using water-energy dynamics, study linear regression examine how is related (1) long-term mean evapotranspiration (ET) potential (PET) (2) temporal stability ET PET. PET were represent terrestrial area. Changes over...

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The envelope surface ultrastructure and specific gravity of artificially fertilized eggs the Pacific cod Gadus macrocephalus were examined. unfertilized, demersal slightly adhesive G. almost spherical had no oil globules. Wrinkled with elaborated hexagonal reticulated patterns type I micropyle observed under a scanning electron microscope. adhesiveness was lost at blastodermal‐cap stage after fertilization. micropylar canal sealed by secretion perivitelline fluid, entire became rough....

Previous studies have shown that over-wet soil is challenging to compact and exhibits large creep deformation. The consolidation test of small specimens cannot accurately reflect the compression law, underestimated owing size effects, which affects engineering quality. In order analyze process establish its settlement calculation method, this study focuses on in Anhui Province, China, uses a large-sized tester load law. thermogravimetric analysis method was employed investigate changes water...

This paper assesses the capability of Compact Polarized (CP) Synthetic Aperture Radar (SAR) to classify multi-sea-surface characteristics (defined as typical sea surface suspended sediments, such oil spills algal look-alikes and blooms). CP reconstruction is carried out on two C-band RADARSAT-2 quad-polarized (QP) SAR images using Nord's algorithm. The accuracies reconstructed polarized signatures open water, blooms derived from QP original data (quad-pol) approximate (namely pseudo...