Hubei Academy of Forestry

Wuhan, China

Hubei Academy of Forestry

Wuhan, China
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Ni Z.,Chinese Academy of Forestry | Ren C.,Chinese Academy of Forestry | Cheng J.,Hubei Academy of Forestry | Tang F.,Chinese Academy of Forestry
Journal of the Brazilian Chemical Society | Year: 2017

The aim of this study was to determine the sixteen rare earth elements (REEs) in twelve types of popular flower herb teas and their infusions consumed in China. Microwave-assisted acid digestion was used for all of the samples, and the contents of these elements were determined by inductively coupled plasma mass spectrometry (ICP-MS). The concentrations of REEs varied from 94.6 to 7492 μg kg-1 among these flower samples. Ce was the most abundant elements in all flower samples (27.3-3016 μg kg-1). The leached ratios of REEs for each type of tea ranged from 7.3% (globe amaranth) to 29.8% (carnation). The leach ratios of REEs in these flower herb teas were at different percentages depending on types of flowers. The daily intake of rare earth oxides from these flower herb tea infusions may not produce any health risks. © 2017 Sociedade Brasileira de Química.

Zhou W.C.,Chinese Academy of Forestry | Zhou W.C.,Hubei Academy of Forestry | Cui L.J.,Chinese Academy of Forestry | Wang Y.F.,Chinese Academy of Forestry | Li W.,Chinese Academy of Forestry
Shengtai Xuebao/ Acta Ecologica Sinica | Year: 2017

Wetland ecosystems, as the main source of atmospheric methane (CH4), could seriously affect the concentration of atmospheric CH4 and further climate change. Presently, wetland ecosystems have been severely affected by human actives (i.e., drainage, grazing, and harvesting). However, the effects of grazing on the CH4 emission of wetland ecosystems have not been well investigated. Therefore, to evaluate the effects of grazing on the emission of CH4 flux, we performed the field experiments in the Zoige Plateau wetland, southwestern China, from June to October 2013. We also performed field experiments to investigate the effects of simulated increased in sheep or yak grazing by the clipping on CH4 emission in the same studied sites from May to October 2014. CH4 emission was measured using a dark static chamber and the fast greenhouse gas analyzer (FGGA) during the two growing season. We observed an obvious seasonal variation in CH4 emission at the studied sites. The CH4 emission varied from -0.42 to 18.06 mg m-2 h-1 and its maximum value occurring in summer and/ or autumn. These results showed that the CH4 emission in the grazing and fencing plot was (31.32±19.57) g/ m2 and (30.31±23.46) g/ m2, respectively, during the growing season, and there were no significant differences in CH4 emission between grazing and fencing plots (P>0.05).However, the CH4 emission in the grazing plot was (21.01±12.35) g/ m2 during heavy grazing periods (from July to September 2013), which was 54.3% higher than that in the fencing plot (un- grazed plot). Moreover, the results revealed that the CH4 emission in the two clipping plots with 8 cm and 4 cm of vegetation height after clipping were (5.01±5.37) g/ m2 and (4.69±5.99) g/ m2, respectively, during the growing season, which were significantly higher in the 8 cm vegetation height in the clipping plot (335.9%) than that in the non-clipping plot (1.15±1.89) g/ m2 (P<0.05), and 308.0% higher in the 4 cm vegetation height in the clipping plot than that in the non-clipping plot. Furthermore, we also measured the aboveground biomass in both the grazing and clipping plots. The results indicated that grazing decreased the aboveground biomass, which was 37.5% lower than the control plot ((525.88± 103.47) g/ m2 vs. (886.09 ± 124.46) g/ m2) (P < 0.05). We also found a significantly negative correlation between aboveground biomass and CH4 emission in August (P<0.05), which may imply that CH4 flux emissions decrease due to the reduced height of herbaceous vegetation. In summary, the results of the present study suggested that the sheep or yak grazing and clipping disturbance increased CH4 emission in plateau wetland, via the reduction of the transporting distance from soil to the atmosphere due to significantly decreased aboveground biomass. This result provides the basic date for habitat protection and management in the plateau wetland in China. © © 2017, Ecological Society of China. All Rights Reserved.

Peng Y.,Huazhong Agricultural University | Zhou Z.,Huazhong Agricultural University | Tong R.,Huazhong Agricultural University | Hu X.,Hubei Academy of Forestry | Du K.,Huazhong Agricultural University
Flora: Morphology, Distribution, Functional Ecology of Plants | Year: 2017

Flooding stress always depressed plants survival and growth in flood-affected areas. To explore anatomy and ultrastructure adaptations to hypoxia stress, two full-sib poplar clones differing in flood-tolerance LS1 (flood-tolerant) and LS2 (flood-susceptible) were compared for waterlogging effects on them. The two clones LS1 and LS2 originated from Populus deltoides cv. Lux ex. I-69/55 × P. simonii. Morphological, ecophysiological and growth parameters, as well as anatomy and ultrastructure characteristics of their seedlings were subjected for 15 days to flooding treatment, followed by a three-day drainage and recovery stage. Results showed that flooding stress adversely influenced all characteristics aforementioned in all flooded plants. Compared with LS1, LS2 suffered clearly more severe flood injury during hypoxia and slower recovery ability after drainage, illustrated by morphology, biomass accumulation, gas exchange, chlorophyll fluorescence, root metabolism, and relative membrane permeability and malonaldehyde content of roots. Correspondingly, more pronounced anatomy and ultrastructure damages in leaves and roots were found in flooded LS2 as well, including palisade cell deformation in leaves, as well as serious lysis of cortical parenchyma cells and decompositions of nucleus and organelles in roots. Our results showed that morphological, ecophysiological and growth responses to soil flooding paralleled their anatomy and ultrastructure adaptations in leaves and roots. Stable intercellular and intracellular structures in leaves and roots, especially in the latter, helped the flood-tolerant clone behaved better than the flood-susceptible clone. Roots suffered more severe anatomy and ultrastructure injury than leaves under hypoxia stress. The flood-tolerant clone kept a stable cross-section anatomy with normal aerenchyma and ultrastructure in roots, which enable plant-internal aeration so that maintain aerobic respiration and basic root activities under flooding condition. The flood-susceptible clone was prone to lost normal cross-section anatomy under soil flooding caused by serious cortical parenchyma cell lysis and ultrastructure destruction, which resulted in root disorganization and dysfunction. © 2017 Elsevier GmbH

Li D.-W.,U.S. Department of Soil and Water | Chen J.,Hubei Academy of Forestry | Wang Y.,Hubei Academy of Forestry
Mycotaxon | Year: 2011

A new species, Rhexodenticula zhengii from leaf litter of Sycopsis sinensis collected from Houhe National Nature Reserve, Wufeng, Hubei, China is described and illustrated with cymbiform conidia 18.5-22.0 × 4.5-5.0 μ m, constricted at proximal and distal septa. A key to the species of Rhexodenticula is provided. © 2011 Publishing Technology.

Cheng R.,Chinese Academy of Forestry | Feng X.,Chinese Academy of Forestry | Xiao W.,Chinese Academy of Forestry | Wang R.,Chinese Academy of Forestry | And 3 more authors.
Shengtai Xuebao/ Acta Ecologica Sinica | Year: 2011

Masson pine is one of the main native plantation species in South China due to its fast and easy growing characteristics. Plantation area of the species increased dramatically and its growth was significantly impacted by climate change in past decades. The relationship between net productivity of masson pine plantation and climatic factors, especially for the plantation in its northern natural distribution boundary where masson pine growth is more sensitive to changes of climatic factors, is important to understand the response of its growth to climate change. We set six 20m×20m plots in 30 years old masson pine plantation in Jigongshan National Nature Reserve of Henan Province for doing this study. Both height and diameter at breast height (DBH) of all trees were measured and six cross increment cores at breast height of three sample trees were got in each plot. Tree ring widths of the dried and burnished cores were measured with Lintab tree ring analysis system. Annul diameters and heights of the sample trees were calculated using the annul tree ring widths. Biomass and net productivity of the old masson pine stands in the past 30 years were calculated based on the regressive equations between biomass and height and DBH in this area. After that, correlations between productivity and climate factors, including monthly and seasonal temperature, humidity, precipitation, sunshine and the Palmer Drought Severity Index (PDSI), were analyzed. The regressive equation between net productivity and climatic factors of the plantation in the area was established finally. The results indicated that biomass of the plantation increased more than three times in the past 30 years, from 59.00 t/hm2 in 1980 to 254.75 t/hm2 in 2009, and mean net productivity of the stand was 6.64t·hm-2·a-1. Net productivity was closely correlated with climatic factors. The effects of temperature, sunlight, precipitation and humidity on net productivity were different. There were positive correlations between productivity and precipitation in last August, mean temperature in February, precipitation in March, mean humidity in May, and mean temperature and total sunlight in October. There were negative correlations between productivity and total sunlight in May, precipitation and mean humidity in October. Productivity was correlative positively with PDSI from February to September. Seventy one percent of the changes of productivity could be interpreted by climatic factors. Generally, biomass of masson pine plantation in North Subtropical Region could accumulate as high as that in low-latitude region but net productivity in the region was much less than that in low-latitude region. Annual changes of net productivity were mainly caused by climatic factors, especially the length of growing season and soil water availability in growing season. It is implied that both biomass and mean net productivity of the plantations could increase in the future due to possible increase of temperature and precipitation in the North Subtropical Region.

Li D.-W.,U.S. Department of Soil and Water | Kendrick B.,8727 Lochside Drive | Chen J.,Hubei Academy of Forestry
Mycological Progress | Year: 2012

Two new species, Codinaea sinensis and Parapleurotheciopsis quercicola from leaf litter of Quercus phillyraeoides collected from Wudangshan, Hubei, China are described and illustrated. Conidiogenous cells of Codinaea sinensis are phialides, the conidia 1-celled, falcate, smooth, colorless, 9.7-11 × 2.0-2.4 μm, with a single, unbranched setula at each end. Conidia of Parapleurotheciopsis quercicola are 3-5-septate, cylindro-ellipsoidal, colorless, smooth, thin-walled, 19-24 × 4.4-5.4 μm. A key to the species of Parapleurotheciopsis is provided. Two new records for China, Subramaniomyces fusisaprophyticus and Taifanglania inflata are also reported. © 2012 German Mycological Society and Springer.

Li D.-W.,U.S. Department of Soil and Water | Chen J.,Hubei Academy of Forestry | Wang Y.,Hubei Academy of Forestry
Sydowia | Year: 2010

A field trip was made to Houhe National Nature Reserve in Wufeng County,Hubei, China in August 2008. Among the fungal specimens collected were two undescribed species of dematiaceous hyphomycetes, Scolecobasidium houhense sp. nov. with conidia fusiform, minutely verruculose, brown, 3-septate, 26-31 x 4. 5-5.5 um and Spadicoides wufengensis sp. nov. with two kinds of conidia: 1-celled conidia, ventricose or ovoid, brown, smooth, 5.5-9 × 3-4.5 um, and 3-celled conidia of synanamorph, obovoid, smooth, brown, truncate at base, 8.5-12 x 3.5-5 um. The new fungal taxa are described and illustrated.

Zha Y.-P.,Huazhong Agricultural University | Lei C.-L.,Hubei Academy of Forestry
Journal of Agricultural and Urban Entomology | Year: 2012

Noctuid moths with tympanal organs perform a series of evasive maneuvers when exposed to bat-like ultrasounds. In this paper, we tested the hypothesis that certain ultrasound frequencies are environmental stress factors that have physiological effects on noctuid moths. The effects of ultrasound produced from a commercial device on the antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT), and peroxidase (POX), were investigated in the adults, pupae, and larvae of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae). Our results showed that the effects of ultrasound-stress on antioxidant enzymes depended on the developmental stages of H. armigera and the duration of exposure. A significant (P < 0.01) increase in POX activity in adult and larval H. armigera was observed 40 minutes after ultrasound exposure. The results indicated that ultrasound stress has the potential to alter the antioxidant enzyme system in H. armigera. © The South Carolina Entomological Society, Inc.

Li D.-W.,U.S. Department of Soil and Water | Chen J.,Hubei Academy of Forestry | Wang Y.,Hubei Academy of Forestry
Mycotaxon | Year: 2013

Among hyphomycetes collected from dead leaves of Sycopsis sinensis in Houhe National Nature Reserve, Wufeng, Hubei, China, a sporodochial fungus new to science, Linodochium sinense, is described and illustrated. It develops yellow conidiomata and 2-celled conidia that are filiform, colorless, smooth, 34-40 × 1.1-1.5 μm. Candelabrum microsporum, Chalara affinis, Cylindrocladium madagascariense, and Subulispora britannica are new records from China, while Menisporopsis novae-zelandiae is newly reported from mainland China.© 2013. Mycotaxon, Ltd.

PubMed | Huazhong Agricultural University and Hubei Academy of Forestry
Type: | Journal: Journal of insect science (Online) | Year: 2015

Parasitoid wasps of the genus Sclerodermus (Hymenoptera: Bethylidae) are an important natural enemy of the Japanese pine sawyer beetle Monochamus alternatus Hope (Coleoptera: Cerambycidae). In this study, we used scanning electron microscopy to examine the external morphology of the antennal sensilla of Sclerodermus sp. Antennae of females and males comprised the scape, pedicel, and 11 flagellomere segments. Based on the morphology of the sensilla in each sex, seven types of sensillum were identified: sensilla trichodea (Tr.1, Tr.2 and Tr.3), sensilla basiconica (Ba.1, Ba.2, and Ba.3), sensilla styloconica (St.1 and St.2), sensilla placodea, sensilla coeloconica, sensilla squamiforma, and Bohms bristles. Tr.2, Ba.1, and St.1 were only found in females, whereas Ba.2, Ba.3, and St.2 were only observed in males. Sensilla placodea were the most common, given that they occur on the antennae of many parasitoid Hymenoptera, whereas sensilla Tr were the most abundant, being distributed over the entire antennal surface. These sensilla are likely to have roles in the host locating and habitat searching behavior of adult Sclerodermus wasps. Therefore, our findings provide a basis for further studies of the host location behavior of this and other species of parasitic wasp.

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