Rapid urbanisation and expansion of residential, industrial, traffic areas have greatly changed regional land-use patterns directly affected habitat quality biodiversity. Assessing predicting the spatio-temporal evolution future development trends under influence change can provide a scientific basis for natural environment conservation planning. To calculate across space time, we used different data sources including surveys, meteorology, statistical yearbooks, digital elevation model in...

The effects of selenium on photosynthesis and Chl fluorescence in pear, grape, peach were analyzed. foliar spray amino acid-chelated solution was performed soon after fruit setting, totally six times, with an interval ten days. After seven days from the last spray, leaves middle shoots examined. Foliar increased net photosynthetic rate peach. In contrast, treatment decreased stomatal conductance, transpiration rate, substomatal CO2 concentration all three species. improved maximum quantum...

Rapid urbanization and drastic land-use change have led to landscape fragmentation ecological environment deterioration in the regions along Grand Canal. Building an network is important means improve connectivity of habitat patches carry out protection restoration territorial space, which great significance ensure regional biodiversity security. In this article, we took Huaiyang Section Canal (Huaiyang Canal) as study area, used ecosystem service assessment model, morphological spatial...

Abstract: This paper provides a systematic treatment of tubular microfossils collected from dolomitic phosphorites the Ediacaran Doushantuo Formation at Weng’an, South China. These were investigated using petrographic, acid extraction and re‐embedding techniques. Four morphological genera five morphospecies are described: Ramitubus increscens gen. et sp. nov., decrescens Sinocyclocyclicus guizhouensis , Quadratitubus orbigoniatus Crassitubus costatus nov. They characterized by cylindrical (...

SUMMARY The E diacaran fossil oandromeda octobrachiata had a high conical body with eight arms in helicospiral arrangement along the flanks. carried transverse bands proposed to be homologous ctenophore ctenes (comb plates). is interpreted as an early stem‐group ctenophore, characterized by synapomorphies ctenes, comb rows, and octoradial symmetry but lacking crown‐group such tentacles, statoliths, polar fields, biradial symmetry. It probably pelagic mode of life. appearance record...

Abstract: Shales of the Ediacaran Doushantuo Formation South China contain a new disc‐shaped macrofossil, Eoandromeda octobrachiata , characterized by eight spiral arms that were probably housed within an outer membrane. Although presence radiating structures entails resemblance to cnidarian octocorals as well ctenophores, direct homologies with these extant groups are unlikely. Instead we bring attention helicospiral morphology newly reported embryos from Formation, suggesting long‐sought...

Habitat quality is an important indicator for evaluating the biodiversity provided by ecosystem. Estimating and scenario-simulating dynamic evolution future development trends of habitat under influence land-use change significant in regional conservation, formulating planning, maintaining ecological environmental sustainability. In this article, we included Huaihe River Economic Belt as area study because its vital location China applied CA–Markov InVEST models to analyze spatio-temporal...

Increasing air pollution, rising carbon emissions, and urban shrinkage pose significant challenges for sustainable development in China. Exploring the relationship between synergy effect of pollution reduction mitigation (SPRCR) can contribute to systematically addressing green development. However, few studies have analyzed all three factors within a unified analytical framework. Therefore, our study takes 288 cities at prefecture level above China as research objects endeavors apply...

Abstract A new dinosaur of Early Cretaceous age was recently discovered from the Mazongshan area northwestern Gansu Province, China. The represents a genus and species Sauropoda, is among most basal members Titanosauria. Its finding also suggests that titanosaurs might have originated in Asia no later than Cretaceous.

The reported new U-Pb age by sensitive high-resolution ion microprobe (SHRIMP II) on zircon was obtained from a tuff sample at the basal Doushantuo Formation in Jiuqunao section, which situated western limb of Huangling anticline Yangtze Gorges Zigui, Hubei, South China.Eighteen spots zircons were analyzed and they form two clusters: one includes three spots, with an inherited 784±15 Ma (MSWD=0.05); other consists 15 gives weighted mean 206 Pb/ 238 U 628.3±5.8Ma (MSWD=0.86).It is first...

Abstract: High‐quality zircon U‐Pb ages acquired from Meso‐ and Neoproterozoic strata in North China recent years has provided a high‐resolution chronostratigraphic framework for dating. A basis of this high‐level system provides the foundation global Precambrian study stratigraphic correlation so geological studies have focused attention on systemic SHRIMP chronology time origin overlying Changcheng System is given new dating Qianxi Complex diabase Chuanlinggou Formation....

The tense relationship between the supply and demand of land resources past spatial expansion urban development in Beijing have brought many problems. Mixed use is considered to be able solve these problems as well promote sustainable development. In this context, study uses multi-source big data such POI, OpenStreetMap web crawler construct current land-use area within sixth ring road Beijing, then entropy index type number analyze distribution aggregation characteristics mixed level....

Abstract Although oxic surface, ferruginous deep, and euxinic intermediate waters have been documented, the redox heterogeneity of early Cambrian oceans remains largely unclear, precluding our understanding relationship between marine evolution animal diversification. In this study, we analyzed iron species, redox‐sensitive trace elements, S‐N‐C isotopes deepwater black shales in Silikou section continental‐margin Nanhua Basin (South China), which represent extensive clastic input mainly...

Abstract: Large acanthomorphic acritarchs have been found in chert of the Ediacaran Doushantuo Formation at several localities South China, including East Yangtze Gorges Hubei Province, Weng'an area Guizhou and elsewhere. However, their potential for biostratigraphic subdivision correlation successions is limited by facies control, taphonomic biases, taxonomic problems. In Gorges, generally subdivided into four lithologic members. area, comprises just a lower upper part separated...

The late Ediacaran Jiangchuan biota, from the Dengying Formation in eastern Yunnan, is well-known for its diverse macroalgal fossils, opening a window onto eukaryotic-dominated ecosystems Neoproterozoic of South China. Although multiple lines evidence suggest that metazoans had already evolved by Ediacaran, animal fossils have not yet been formally described this locality. Here, we report putative disc-shaped macrofossil

Ecological corridors provide essential routes for biological migration, which would promote species exchange among different habitats. The construction of is beneficial to alle-viate the damages caused by fragmentation landscapes due acceleration urbanization, with significance biodiversity conservation. In this study, we located ecological sources results sensitivity evaluation and ecosystem service value analysis in Changli County based on its land use status 2015. Then, produced potential...