Wetland vegetation aboveground biomass (AGB) directly indicates wetland ecosystem health and is critical for water purification, carbon cycle, biodiversity conservation. Accurate AGB estimation essential the monitoring supervision of ecosystems, especially in seasonal floodplain wetlands. This paper explored capability spectral texture features from Sentinel-2 Multispectral Instrument (MSI) modeling grassland using random forest (RF) extreme gradient boosting (XGBoost) algorithms Shengjin...

Even a low concentration of sodium dodecyl sulfate (SDS), widely used bactericidal surfactant, can significantly change the species, quantity and genetic functions microorganism communities in natural waters. Lake–terrestrial ecotones are areas where microorganisms highly active, they also lake most vulnerable to SDS pollution. Because very sensitive environmental changes, their activities vary greatly among lakes laboratories, so it is difficult simulate real dynamics using small-scale...

Analyses of landfast ice in Arctic coastal areas provide a comprehensive understanding the variations sea and generate data for studies on utilization passages. Based our analysis, mainly appears January–June is distributed within narrow straits Canadian Archipelago (nearly 40%), East Siberian Sea, Laptev Kara Sea. From 1976–2018, extent gradually decreased at an average rate −1.1 ± 0.5 × 104 km2/yr (10.5% per decade), while decrease entire was −6.0 2.4 (5.2% decade). The annual maximum...

Nest site selection is a vital component of bird reproduction success, and an adaptive behavior conducted to decrease nest predation risk with avoiding external disturbances. Understanding patterns can provide insights into how species adapt changes in their habitat has important conservation implications. In this study, we used microhabitat variables multi-scale data field survey occurrence determine strategies the breeding Oriental Storks (Ciconia boyciana) different areas. Results...

Abstract The visual composition and human perception are found to relate the reuse tourism of heritage railways. Previous studies have used either environmental audits on-site interviews that limitations in terms cost, time, measurement scale, or virtual base on two-dimension images but with gaps interactivity, immersion field view. This study developed an “objective + subjective” evaluation framework integrating Computer Vision (CV) Immersive Virtual Reality (IVR) assess quality industrial...

Due to the high altitude, unique geographical location, difficult accessibility and low temperature, environmental factors influencing phytoplankton composition have rarely been investigated in Selin Co Lake, which is largest lake Tibetan Plateau. Phytoplankton can indicate aquatic ecosystem conditions, may be sensitive In this study, we main that influence species Lake by analyzing spatial distribution applying statistical analyses. We also compared influential with other lakes around...

In the last few decades, climate in Northwest China has exhibited a warming–wetting tendency, which been particularly prominent since beginning of 21st century. this context, we analyzed change potential evapotranspiration (PET)in corresponding period and its response to warming wetting, revealed clear periodic changes. The most significant changes occurred 1970s 1980s, when PET decreased humid zone increased semi-arid zone. Factor effect analysis showed that had positive temperature;...

A key means of promoting the high-quality development karst areas is maintenance area’s ecological security. full recognition special function areas, as well their significance to surrounding region’s ecological, economic, and social development, crucial in strengthening overall strategic deployment national construction protection sustainable landscapes around globe. In this study, landscape Puzhehei, Qiubei County, Wenshan Prefecture, Yunnan Province, China, was used research object. This...

Under the influence of human activities, eutrophication has become an increasingly serious global phenomenon, especially in shallow lakes. Many studies have shown that aquatic macrophytes play a significant role controlling eutrophication, but only few these are ecosystem based. In this paper, we applied mass-balance model to eutrophic lake (Lake Datong, China) as case study with aims evaluating status restoration via recovery vegetation and providing adaptive management suggestions. Results...

The copyright of data is a key point that needs to be solved in spatial infrastructure for sharing. In this paper, we propose decentralized digital rights management model data, which can provide novel way solving the existing problem or other problems An Ethereum smart contract used realize function. InterPlanetary File System utilized as external storage storing file system avoid destruction caused by single failure. There no central server architecture, has completely nature and it makes...

Abstract Background The schizothoracine fishes, an excellent model for several studies, is a dominant fish group of the Qinghai-Tibet Plateau (QTP). However, species populations have rapidly declined due to various factors, and infection with Echinorhynchus gymnocyprii cited as possible factor. In present study, molecular characteristics E. in four fishes from QTP were explored. Methods We investigated status 156 upper Yangtze River, Yellow Qinghai Lake Province, China. complete internal...

Abstract Background Lake is a critical part of Tibet's hydrological cycle, the lake–terrestrial ecotone most sensitive area in water and terrestrial ecosystem. For ecological protection maintenance lakeside zone, defining upper boundary key issue that needs to be solved urgently. However, characteristics made it difficult delimit. Wetland herbs are characteristic plants ecotone, their distribution width can used reflect ecotone. We took Baksum Lake, Yamdroktso, Namtso, Siling Co as examples,...

Over the few past decades, many bird species have expanded their nesting ranges by adapting to degraded habitat. Conservation efforts promoted growth of populations endangered species, and several such continuously. Understanding predicting effects climate change on habitat can aid recovery management. In this study, we used multi-scale data geographic variables with a field survey sites occurrence Oriental Storks (Ciconia boyciana) determine nest selection patterns. We then simulated...

Potamogeton crispus is a common submersed aquatic plant in shallow lakes China, and its overgrowth rapid decomposing have become an important environmental problem affecting the water quality of every summer. Introducing other plants to substitute can improve structure community reduce growth some degree, but effect poor short-lived. Considering fact that sensitive changes light intensity, two methods shading surface introduction submerged were used synergistically. In large simulated...

Sediments serve as a crucial accumulation site for pollutants, and the source sink effects of sediment pollutants significantly influence overlying water. In this research, concentrations heavy metals in sediments Jinmucuo Lake were investigated. The pollution levels ecological risks assessed via geoaccumulation index potential risk index, sources identified multivariate statistical methods. Results revealed that mean cadmium, chromium, copper, zinc, nickel, arsenic mercury exceeded soil...

洪泽湖生态系统健康状态为中等, 并呈逐年退化的趋势, 因此开展洪泽湖健康水生态系统构建方案的研究十分必要.本文分析了洪泽湖水生态系统健康状态、水体分区特征以及存在的主要问题, 根据水文条件和水生态状况的差异, 将洪泽湖划分为3种具有典型特征的湖区:过水通道(从淮河入湖口至入江水道)、湿地保护区和成子湖区.针对不同湖区在水质、水生生物和水文条件方面存在的显著差异, 按照修复生境条件-恢复水生植物-调控系统结构的总体思路, 提出了过水通道水文调控与生态修复、湿地自然保护区保育、成子湖生态系统恢复与蓝藻应急控制、湖泊生态系统结构优化与调控等一系列措施, 形成洪泽湖健康水生态系统构建方案, 为恢复健康的洪泽湖水生态系统提供切实可行的依据。;The healthy status of aquatic ecosystem in Lake Hongze is intermediate, but its showed a trend degradation year by year.It necessary to build scheme for before it will degrade...

本文利用2012年夏季中国第五次北极科学考察期间雪龙船在北极东北航道走航观测的海冰密集度数据(OBS-SIC)，初步评估了7种基于被动微波遥感的海冰密集度产品(PM-SIC)。7种PM-SICå› ä¼ æ„Ÿå™¨å’Œåæ¼”æ–¹æ³•ä¸åŒï¼Œåˆ†è¾¨çŽ‡å·®å¼‚è¾ƒå¤§(4—25 km)。在海盆尺度的海冰范围反演上7种PM-SIC基本相同，但对小范围浮冰区的反演差异较大。与MODISå¯è§å ‰å›¾åƒå¯¹æ¯”å‘çŽ°ï¼ŒMASAM数据(4...

The 44 years (1979–2022) of satellite-derived sea ice extent in the Arctic and Antarctic reveals details new trends process polar coverage changes. speed reduction interannual difference significantly increased after 2004. Trend analysis suggests that Ocean may experience an ice-free period around 2060. maximum anomaly has gradually transitioned from September to October, indicating a trend prolonged melting period. center gravity is biased towards Pacific side, spatial distribution pattern...