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1

Recent advances on renewable energies and carbon capture

100%
Zhang K., Shen J., Zhang J., Han H.
Polish Journal of Environmental Studies
|
2019
|
tom 28
|
nr 4
In recent years, environmental pollution caused by excessive exploitation and utilization of the Earth’s fossil fuels, extreme exploitation of land resources, and excessive emissions of carbon dioxide (CO2) has caused people to think about how to reduce CO2 emissions and capture the existing CO2 in the atmosphere. The reduction of CO2 emissions can be summarized into two aspects. Firstly, people could use renewable energy to provide energy support for economic and social development. These renewable energies mainly include solar energy; wind energy, hydro, and marine energies; geothermal energy; and biomass energy. The second aspect is the sequestration and conversion of CO2. CO2 is also a form of carbon resource that can be a favorable alternative to traditional carbon resources. The utilization of CO2 can solve both environmental pollution and depletion of traditional carbon resources at the same time. In this paper, the development of five renewable energy sources and their applications in China were discussed, and the methods of effective sequestration and conversion of CO2 were presented. Energy and environment are closely related to the development of modern society. The problems caused by excessive CO2 emissions cannot be ignored and the sequestration of the greenhouse effect requires joint efforts of mankind.
2

Factors controlling decomposition rates of needle litter across a chronosequence of Chinese pine (Pinus tabuliformis Carr.) forests

100%
Gao J., Han H., Kang F.
Polish Journal of Environmental Studies
|
2019
|
tom 28
|
nr 1
We investigated how factors underlying local spatial variations controlled needle litter decomposition across a chronosequence of Chinese pine (Pinus tabuliformis Carr.) forests. Litterbag methods were used to measure changes in litter chemistry and the mass loss of leaf litter, as well as selective biotic and abiotic factors during the growing seasons (May-October) in 2013 and 2014 in a set of fully replicated P. tabuliformis Carr. secondary forest stands that differ in age in northern China. During the two growing seasons the path analysis identified the litter lignin/N ratio, soil microbial metabolic quotient (qCO₂), soil diversity of fungal assemblages (SFD), and soil-water content (SWC) as dominant controlling factors in needle litter decomposition, collectively explaining 76.9% of the total variation in mass loss across the entire age sequence. Litter lignin/N and soil qCO₂ had the greatest negative effects on the k value, followed by weaker positive effects of SFD and SWC. Our findings indicate that forest stand age has a great influence on needle litter decomposition by determining litter quality, with soil microbial activity and local environmental factors being secondary drivers in needle litter decomposition across a chronosequence of Chinese pine (Pinus tabuliformis Carr.) forests.
3

Evaluating the health of an urban river combining DPSIR framework and an improved fuzzy matter-element extension model: a case study from the Jinshui River

100%
Han H., Zhang K., Zhang J.
Polish Journal of Environmental Studies
|
2020
|
tom 29
|
nr 3
4

Effect of litter quality on leaf-litter decomposition in the context of home-field advantage and non-additive effects in temperate forests in China

100%
Gao J., Kang F., Han H.
Polish Journal of Environmental Studies
|
2016
|
tom 25
|
nr 5
Litter quality is often considered the main driver of rates of decomposition. Litter decomposes faster in its home environment than in any other environment, which is called the home-field advantage (HFA). However, evidence for this phenomenon has not been universal. In addition, litter mixtures of different species can induce a non-additive effect (NAE) on decomposition processes. However, the direction and magnitude of NAE vary and underlying mechanisms remain unclear. The aim of our study was to assess the effect of litter quality on leaf-litter decomposition in the context of HFA and NAEs in temperate forests in China. Litterbags containing aspen (Populus davidiana), birch (Betula platyphylla), and oak (Quercus liaotungensis) litter were incubated in situ in pure aspen and broadleaved mixed forests in Chinese temperate forests for 360 days. The main results were: 1. Aspen litter with a low C/N ratio and high initial N concentration decomposed faster than birch litter, both of which decomposed faster than oak litter, which had the lowest quality. 2. The rate of decomposition of oak litter was significantly higher in the broadleaved mixed forest than in pure aspen stands; however, the rate of decomposition of birch litter was not significantly different from pure aspen stands and broadleaved mixed forest. 3. Contrary to what was predicted, the mixture of aspen and birch litter decomposed faster than expected. However, both the aspen/oak and birch/oak mixtures had a neutral mixing effect where the rates of decomposition were slightly faster than expected. 4. Controlling factors based on linear models show that the order of the relative importance of their effect on litter decomposition was as follows: litter quality, forest floor environment, and litter mixtures. This study indicates that: 1. The various litter species exhibited different litter-environment interactions, such as favoring or contradicting the HFA hypothesis. 2. Litter mixture treatments can induce different mixing effects. 3. Compared with environment and litter mixtures, litter quality is the dominant factor in controlling the rate of litter decomposition.
5

Effect of nitrogen addition on soil respiration in a larch plantation

88%
Zhu J., Kang F., Chen J., Cheng X., Han H.
Polish Journal of Environmental Studies
|
2017
|
tom 26
|
nr 3
Knowledge about the impact of nitrogen (N) addition on soil respiration (Rs) is critical for understanding soil carbon (C) balance and its responses to climate change. We conducted a long-term field experiment to evaluate the response of Rs to N addition in a larch (Larix principis-rupprechtii) plantation during the growing season in northern China. We applied four N (in the form of NH₄NO₃) levels, i.e., control (N0: 0 g N m⁻² year⁻¹), low-N (N1: 5 g N m⁻² year⁻¹), medium-N (N2: 10 g N m⁻² year⁻¹), and high-N (N3: 15 g N m⁻² year⁻¹) monthly starting in June 2015. The results showed that N addition – especially N2 and N3 levels – significantly stimulated Rs. N1 and N2 levels resulted in the increase of Rs in a short time, whereas the duration of N3 level can last across the whole month or at least 10 days. The results highlight the need for improving the Rs sampling interval after N addition to ensure more accurate evaluation of C emission. Soil temperature and soil moisture together explained more variations of Rs. N addition exhibited a slight increase in the sensitivity of Rs to temperature (Q₁₀), but no significant differences were found for the Q₁₀ among N levels.
6

Dietary selenium deficiency and supplementation differentially modulate the expression of two ER-resident selenoproteins (selenoprotein K and selenoprotein M) in the ovaries of aged mice: preliminary data

76%
Qazi I. H., Yang H., Wei S., Angel C., Pan B., Zhou G., Han H.
Reproductive Biology
|
2020
|
tom 20
|
nr 3
7

Effect of mevalonic acid on cholesterol synthesis in bovine intramuscular and subcutaneous adipocytes

64%
Liu X., You L., Cheng H., Zhang Q., Song E., Wan F., Han H., Liu G.
Journal of Applied Genetics
|
2016
|
tom 57
|
nr 1
8

Influence of conditioned media of Halomonas sp. DH-e on phycosphere bacterial community dynamics of Prorocentrum donghaiense

64%
Bi X., Wang A., Han H., Xie L., Wang D., Han G., Zhu L., Zhu Y.
Polish Journal of Environmental Studies
|
2020
|
tom 29
|
nr 4
9

Effect of water deficit during vegetative growth periods on post-anthesis photosynthetic capacity and grain yield in winter wheat (Triticum aestivum L.)

64%
Ciu Y., Tian Z., Zhang X., Muhammad A., Han H., Jiang D., Cao W., Dai T.
Acta Physiologiae Plantarum
|
2015
|
tom 37
|
nr 10
Determining the effect of water deficit during vegetative growth periods on grain yield will provide reasonable strategy for water-saving management of winter wheat (Triticum aestivum L.). Pot experiment was conducted using winter wheat cultivar (Yangmai16) to investigate the effects of water deficit during vegetative periods on post-anthesis photosynthetic capacity and the relationship with grain yield formation during the growing season of 2013–2014. Water deficit consisted of moderate (leaf water potential of -1.20 to -1.40 MPa) and severe (leaf water potential of -1.80 to -2.20 MPa) levels during tillering and jointing growth stages, respectively. Moderate water deficit during tillering significantly increased grain yield through an enhanced yield capacity per stem and moderate water deficit during jointing resulted in similar grain yields as compared to control, while severe water deficit during both periods significantly reduced grain yield due to strong reduction in number of spikes as compared to control. Moderate or severe water deficit during tillering had no effect on flag leaf area but reduced it significantly when it occurred during jointing. Water deficit treatments during jointing and tillering increased net photosynthetic rate (Pn) of flag leaves, the treatment during jointing being the most stimulatory. The maximum photochemical efficiency of Photosystem II, actual photochemical efficiency, the maximum carboxylation rate and photosynthetic electron transport rate increased in ways similar to Pn in response to water deficit but non-photochemical quenching decreased. We conclude that improved photosynthetic capacity by moderate water deficit during vegetative growth period highly contributes to grain yield, especially during tillering period, while grain yield decreased by the limitation of leaf area and spikes under severe water deficit.
10

First report of Hepatozoon (Apicomplexa: Adeleorina) from king ratsnakes (Elaphe carinata) in Shanghai, with description of a new species

64%
Han H., Wu Y., Dong H., Zhu S., Li L., Zhao Q., Wu D., Pei E., Wang Y., Huang B.
Acta Parasitologica
|
2015
|
tom 60
|
nr 2
11

Genome-wide association study of body weight in Wenshang Barred chicken based on the SLAF-seq technology

64%
Li F., Han H., Lei Q., Gao J., Liu J., Liu W., Zhou Y., Li H., Cao D.
Journal of Applied Genetics
|
2018
|
tom 59
|
nr 3
12

The prevalence of helminth parasites in Pelophylax nigromaculatus (Anura: Ranidae) from Shanghai, China

64%
Men Q., Han H., Zhao Q., Xia W., Dong H., Zhu S., Wang Z., Li C., Zhu X., Huang B.
Acta Parasitologica
|
2016
|
tom 61
|
nr 4
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