Accuracy of the Huawei GT2 Smartwatch for Measuring Physical Activity and Sleep Among Adults During Daily Life: Instrument Validation Study.

Background: Smartwatches are increasingly popular for physical activity and health promotion. However, ongoing validation studies on commercial smartwatches are still needed to ensure their accuracy in assessing daily activity levels, which is important for both promoting activity-related health behaviors and serving research purposes.

Objective: This study aimed to evaluate the accuracy of a popular smartwatch, the Huawei Watch GT2, in measuring step count (SC), total daily activity energy expenditure (TDAEE), and total sleep time (TST) during daily activities among Chinese adults, and test whether there are population differences.

[Research progress on quantitative evaluation methods of urban ecological carrying capacity].

Quantitative evaluation of urban ecological carrying capacity is a critical foundation for measuring urban sustainable development in the new era. This review would enrich the concept and connotation of urban ecological carrying capacity by sorting out its components and characteristics. We categorized the methods for quantifying urban ecological carrying capacity into static evaluation methods, including ecological footprint method, comprehensive evaluation method, state space method, net primary productivity method, and carbon-oxygen balance method, as well as dynamic simulation prediction methods, including system dynamics models, BP neural network prediction models, and grey prediction models.

[Research progress on the effect of estuary microplastics on antibiotic resistance genes].

Estuaries are transitional zones between rivers and marine environments, with intensive human activities. Pollutants pose a threat to the ecological systems of estuaries. Among these pollutants, microplastics and antibiotic resistant genes have gained significant attention due to their potential impacts on estuarine organisms and human health.

[Wild boar resource and its conflict with human in Zhejiang Province, East China].

Human-wildlife conflict is one of the important research topics in biodiversity and conservation. Understanding the status of wildlife resources and its conflict with human could promote the sustainable protection and management of wildlife. Wild boar () is one of the most widely distributed ungulates in the world, with an increasing population and recently rising levels of conflict with human.

[Effects of seed carrier-immobilized microorganisms on the growth of rapeseed and the remediation of petroleum hydrocarbon contaminated soil].

Petroleum hydrocarbon pollutants in soil are challenging to biodegrade, negatively impacting plant growth as well as the metabolic activity and community structure of soil microorganisms. Microorganisms immobilized by seed carriers can synergistically contribute to the remediation of petroleum hydrocarbon-contaminated soil. We prepared a rape seed carrier with immobilized microorganism by seed coating (with a mixture of diatomaceous earth and bentonite as fillers) and microbial immobilization.

[Investigating jellyfish diet with DNA macrobarcoding: A case study in ].

We investigated food composition and feeding selectivity of jellyfish () from the coastal aquaculture ponds in Liaodong Bay by DNA metabarcoding technology. The DNA from environmental water samples and stomach contents of were extracted and sequenced by high-throughput sequencing with 18S rDNA V4 region and mitochondrial cytochrome c oxidase subunit I (COI) as metabarcoding markers. Based on 18S rDNA metabarcoding, we detected 27 phyla in the stomach contents of , in which Mollusc was the dominant phylum followed by Arthropod, and 34 phyla in the environmental water samples, in which Pyrrophyta was the dominant phylum followed by Ciliophora and Ascomycota.

[Relationship between the resource density of and the habitat environment factors in summer in Jiangsu coastal waters, China].

To understand the habitat distribution characteristics of in summer in Jiangsu coastal waters, we analyzed the relationship between resource density and habitat environment of by using a two-stage generalized additive model based on the survey data of fishery resources in August 2022, combined with the data of bottom water temperature, bottom salinity, depth, chlorophyll-a and prey species. The results showed that the average resource density of in summer was 15.03 kg·km, which mainly distributed in the outer sea area of Lusi Fishing Ground and the middle sea area of Haizhou Bay Fishing Ground.

[Relationship between Benggang erosion and landscape pattern in the southern red soil zone based on path analysis].

Benggang (collapsing hill) erosion is one of the most serious ecological problems in the south of China. Understanding the relationship between Benggang erosion and landscape pattern is conducive to the study of Benggang occurrence and development from the perspective of landscape ecology, with great significance for Benggang prevention and ecological protection. We classified the Lanxi River Basin in Anxi County, Fujian Province into 32 small watersheds.

[Ecological environment quality evaluation based on water benefit-based ecological index in Guangdong Province, China].

As one of the provinces with the largest number of national forest cities, all prefecture-level cities in Guangdong Province have joined the campaigns of building forest cities. Mastering the spatial and temporal variations of ecological environment quality (EEQ) in Guangdong Province is conducive to the benign interaction and coordinated development of urban construction and ecosystem. We used the water benefit-based ecological index (WBEI) to achieve rapid monitoring of EEQ in Guangdong Province, utilized the standard deviation ellipse and gravity center migration, Theil-Sen Median trend method and Mann-Kendall test to explore the spatial distribution disparities and trends, and analyzed the coupling coordination between EEQ and urbanization.

[Assessment of habitat quality changes and driving factors in Jilin Province based on InVEST model and geodetector].

Jilin Province is an important ecological security barrier in Northeast China as it is located at the junction of the Northeast forest belts and the northern sand prevention belts. In recent years, Jilin Province has actively carried out ecological protection and restoration projects, resulting in a continuous improvement trend for the overall ecological environment. However, the evolution patterns and mechanisms of habitat quality are largely unkown.

[Spatial and temporal evolution and multi-scenario modeling of land use and habitat quality in highland mountainous urban agglomeration of central Yunnan, Southwest China].

There are obvious contradictions between the development of plateau mountain urban agglomerations and the protection of ecological environment, with the quality of habitat being closely related to land use changes during urbanization. Based on the land use data of central Yunnan urban agglomeration in 2000, 2010, and 2020, we analyzed the spatio-temporal variations of land use and habitat quality, and used PLUS model and InVEST model to predict the status of land use and habitat quality in 2030 under three scenarios: natural development, urban deve-lopment, and ecological protection. The results showed that the artificial surface area of the study area increased significantly from 2000 to 2020, mainly distributed in the areas with very low and medium topographic gradients, most of which were transformed from the cultivated land in the dam area with slow slope.

[Land use changes and driving forces of landslide area in Tongwei County, Gansu Province, Northwest China from 1985 to 2020.].

Accurately analyzing the type of land use and change characteristics of disaster damage in landslide areas is of great significance to scientifically promote the optimization of regional land use pattern and disaster prevention and mitigation. We analyzed the characteristic parameters of landslides as well as the characteristics and driving factors of land use change from 1985 to 2020 in Tongwei County, Gansu Province, using ALOS DEM data and 1985-2020 land use data, GIS spatial analysis, land-use dynamic attitude, transfer matrix, and Geodetector. The results showed that a total of 1012 landslide samples were identified, characterized by medium elevation, gentle gradient, low elevation difference, short length, and small size.

[Construction of regional ecological security pattern based on the "sensitivity-importance-connectivity" framework: A case study of Guizhou Province].

The construction of an ecological security pattern is crucial to maintain ecosystem health and stability, with great significance for regional sustainable development. Following the research paradigm of "ecological source areas-ecological resistance surfaces-ecological corridors", based on the index framework of "sensitivity-importance-connectivity", we identified the ecological source areas, generated the ecological resistance surface through graded weighting of underlying surface factors and point of interest (POI) method, determined the ecological corridor, pinch point, and obstacle area using circuit theory, and constructed the ecological security pattern of Guizhou Pro-vince. Results showed that the areas of extremely sensitive of rocky desertification and soil erosion and the areas of extremely important areas of water resources forming, soil and water conservation and biodiversity in Guizhou Pro-vince were generally small and distributed differently, accounting for 1.

[Impact of climate change on the potential geographical distribution of subsp. ].

subsp. is an important resource plant with considerable medicinal, economic, and ecological value, and an indicator species in the transition zones between forests and grasslands. Predicting the potential geographic distribution of subsp.

[Spatiotemporal dynamics of forest cover and its response to climate change in Shandong Province, China during 2000-2022.].

Accurately capturing the spatiotemporal dynamics of regional forest cover and its response to climate change is of great significance for forest resource management and ecological environment protection. We used statistical methods such us linear regression and correlation analysis, as well as remote sensing change monitoring to investigate the spatiotemporal dynamics of forest cover and its response to climate change from 2000 to 2022 in Shandong Province based on MODIS VCF products and meteorological data. The results showed that the forest co-verage and forest area in Shandong Province increased from 43.

[PLSR model based on near-infrared spectroscopy for the detection of wood fiber anatomy of ].

To rapidly acquire fiber phenotypic data for wood quality assessment, we used a portable NIR spectro-meter to collect spectral data in 100 individuals of at 18-year-old of 20 different provenances, and simultaneously collected wood cores. Wood basic density and the anatomical structure of wood fiber were measured. The standard normal variate (SNV), orthogonal signal correction (OSC), and multiplicative scatter correction (MSC) methods were used for spectral preprocessing, the competitive adaptive reweighted sampling (CARS) method were used for wavelength selection, and the partial least squares regression (PLSR) model were established.

[Soil health evaluation of non-grain cultivated land: A case study of Dongwu Town, Ningbo City, Zhejiang Province, China].

Non-grain utilization of cultivated land threatens farmland ecological environment and soil health, which restricts grain production. To identify the key obstacle factors of cultivated soil under non-grain utilization, explore the changes of soil quality and function, and evaluate the effects of non-grain utilization on the health of farmland soil, we evaluated soil health of farmland under different non-grain utilization types (vegetables, bamboo-abandoned, nursery-grown plant-abandoned, nursery-grown plant-rice) by soil quality index and soil multifunctionality index method combined with sensitivity and resistance approaches. The results showed that soil organic carbon and total nitrogen (TN) in the bamboo-abandoned soil were 95.

[Soil health evaluation of loquat orchard based on soil quality index method].

Fruit quality and yield in orchards will decrease after long-term planting. To analyze the changes of soil quality under different planting years and identify the key factors of the declining of orchard soil quality could provide scientific foundation for optimizing fertilization management of orchard soil. In this study, we analyzed the changes of soil physical, chemical, and biological properties of loquat orchard under different planting years (<10 years, 10-15 years, 15-20 years, ≥20 years) in Ninghai County, Zhejiang Province, and evaluated soil health by using soil quality index, multifunctionality index, and sensitivity and resistance indicators.

[Isolation, screening of zinc solubilizing microorganisms and its application in low zinc calcareous soil].

Inoculating zinc solubilizing microorganisms (ZSMs) is considered as a promising strategy for increasing Zn phytoavailability in soils with low Zn availability. In present study, we screened six strains of ZSMs from rhizosphere of green manure crop, including three strains of fungi, , and three strains of bacteria, . We conducted a pot experiment of Bok choy inoculated with different ZSMs to analyze the Zn content in shoots and roots, and compared the Zn solubilizing effect of ZSMs.

[Changes of soil microbial phospholipid fatty acid in soil profile under different land use types].

We elucidated the changes of soil microbial biomass and community structure in soil profiles under four typical land use types (farmland, grassland, secondary forest and plantation)and across five soil layers (0-10, 10-20, 20-30, 30-40, 40-50 cm) in the northern mountainous region of Hebei Province. We measured soil microbial biomass by phospholipid fatty acid (PLFA) method, and investigated the effects of land use and soil depth on soil microbial biomass and community structure by variance analysis, correlation analysis and redundancy analysis. The results showed that soil water content, bulk density, and organic carbon content of farmland differed significantly from other land use types.

[Impacts of freeze-thaw process on soil microbial nutrient limitation in slope farmlands of the Chinese Mollisol region].

Understanding the impacts of freeze-thaw action on soil microbial nutrient limitation can provide important support for sustainable utilization of black soil resources. We analyzed the impacts of freeze-thaw action on soil microbial nutrient limitation on a slope farmland located in a typical thick Mollisol region of Keshan County, Heilongjiang Province. We examined the responses of soil microbial nutrient limitation to soil erosion rates through measuring soil nutrient, soil microbial biomass, and soil enzyme activities before and after freeze-thaw under natural conditions, and estimated the soil erosion rates by Cs tracing technology.

[Effect of enhanced silicate minerals weathering on carbon sequestration by plant-soil systems in rice fields].

Successive crop harvest results in soil silicon (Si) loss, which constantly reduces soil available Si. Agricultural measures that can increase the availability of soil Si are in urgent need in agroecosystems. Enhanced weathering of silicate minerals can effectively replenish soil Si, which will promote plant uptake of Si, formation of plant phytolith occluded carbon (PhytOC), and the sequestration of atmospheric CO.

[Effects of different tillage measures on soil organic carbon in dryland wheat fields on the Loess Plateau, Northwest China based on meta-analysis].

To evaluate the effects of tillage measure on soil organic carbon (SOC) and influence degree of various factors on relative change rate of SOC at regional scale, we conducted a meta-analysis to investigate the impacts of tillage measures (CK, traditional deep tillage without straw return; NTS, no tillage with straw return; NT, no tillage without straw return; TS, traditional tillage with straw return; SS, subsoiling tillage) on SOC content and influence factors (climate conditions, soil types, cultivation types, and initial soil physicochemical properties) on relative change rate of SOC in dryland wheat fields on the Loess Plateau, based on literatures published during 2000-2023. Results indicated that NT, NTS, SS and TS performed varies positive effect on SOC content in 0-20 cm soil layer compared with CK. In addition, greater enhancement of SOC were obtained in conditions of loessal soil, mid-temperate zone, average annual temperature of ≤10 ℃ and average annual rainfall of ≤500 mm.

[Effects of exogenous abscisic acid on grain filling characteristics, starch accumulation, and endogenous hormones in maize under early post-anthesis high temperature stress].

We investigated the effects of exogenous abscisic acid (ABA) on grain filling, starch accumulation, and endogenous hormones in maize (both the heat-tolerant maize variety Zhengdan 958 (ZD958) and the heat-sensitive variety Xianyu 335 (XY335)) under early post-anthesis high temperature stress by simulating high temperature stress for a period of 6 to 12 days post-anthesis in 2022 and 2023. There were three treatments: spraying water at ambient temperature as the control, spraying water at high temperature, and spraying ABA at high temperature. The results showed that early post-anthesis high temperature stress resulted in a significant reduction in grain weight and yield in maize, with XY335 showing a greater reduction than ZD958.

[Changes of climate niche of during its invasion in China].

Niche conservatism is essential for predicting the risk of alien species invasions. Currently, the changes of climate niche of during its invasion in China are still not clear. Using principal component analysis, we examined the climate niche shifts of during its invasion and analyzed its potential distribution in China.