Zhengcai Li

Chinese Academy of Forestry

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i-10 index

Research Trends

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Document Type

Co-Authors

Benzhi Zhou

Chinese Academy of Forestry

Xiaoli Dong

Chinese Academy of Sciences

Zhongxian Zhao

Chinese Academy of Sciences

Xiaoli Shen

Institute of Botany

Fu Maoyi

Lanzhou Jiaotong University

Jie Yang

Beijing Normal University

Wei Yi

University of Chinese Academy of Sciences

Guangcan Che

Chinese Academy of Sciences

Liling Sun

Chinese Academy of Sciences

Fang Zhou

University of Science and Technology of China

Cooperative Institutions

Chinese Academy of Sciences

Chinese Academy of Forestry

Kunming Medical University

University of Chinese Academy of Sciences

Kunming Children's Hospital

Institute of Physics

State Forestry and Grassland Administration

National Laboratory for Superconductivity

Czech Academy of Sciences, Institute of Physics

Peking University

Author Statistics

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Investigation and Analysis on Characteristics of Forest Communities in Dajinshan Island,Shanghai

China Forestry Science and Technology (2008)

Zhengcai Li

The characteristics of forester communities and analysed were investigated in Dajinshan Island,Shanghai in this paper.The results showed that two main natural forest communities,Mallotus japonicus-Cyclobalanopsis glauca community and Machilus thunbergii-Cyclobalanopsis glauca-Diospyros kaki-Mallotus japonicus community,have been found in Dajinshan Island.Their species components under forest were similar and both on the original succession stages,and their bio-diversities were at a lower level.The two forest communities were slowly on succession for the regional forest community with the Fagaceae species as the dominance.The suggestion is that on the basis of closed forests,some managements,such as forest gap-regeneration,alteration,etc.should be adopted in order to accelerate the natural succession process.

Mallotus

Forester

Dominance (genetics)

Diospyros

Natural forest

Natural regeneration

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Citations (1)

Unconventional superconductivity of NdFeAsO_0.82F_0.18indicated by the low temperature dependence of the lower critical fieldH_c1

Journal of Physics Condensed Matter (2009)

Xiaolin Wang Shi Xue Dou Zhi‐An Ren Wei Yi Zhengcai Li

We measured the initial M-H curves for a sample of the newly discovered superconductor NdFeAsO(0.82)Fe(0.18), which had a critical temperature, T(c), of 51 K and was fabricated at the high pressure of 6 GPa. The lower critical field, H(c1), was extracted from the deviation point of the Meissner linearity in the M-H curves, which show linear temperature dependence in the low temperature region down to 5 K. The H(c1)(T) indicates no s-wave superconductivity, but rather an unconventional superconductivity with a nodal gap structure. Furthermore, the linearity of H(c1) at low temperature does not hold at high temperature, but shows other characteristics, indicating that this superconductor might have multi-gap features. Based on the low temperature nodal gap structure, we estimate that the maximum gap magnitude Δ(0) = (1.6 ± 0.2) k(B)T(c).

Meissner effect

Critical field

Linearity

10.1088/0953-8984/21/20/205701

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Citations (4)

Effects of Different Management Models on Soil Active Organic Carbon of Bamboo Forests

T'u Jang T'ung Pao (2012)

Zhengcai Li

Increasing problems concerning the environmental quality in forest land and the long-term productivity of forest emphasized a need to develop and improve management strategies that maintain and protect soil function and resources.Changes in forest management may lead to changes in soil organic carbon(SOC) quantity and quality.The maintenance of a high SOC status was desirable for long-term land use due to the multiple beneficial effects of SOC on the soil nutrient status,its structure and water holding capacity etc.The effects of different silvicultural practices on soil organic carbon were still poorly known.The changes were studied in SOC during the long-term conversion of extensively managed Moso(Phyllostachys pubescens) stands to intensively managed ones in Fuyang County,Zhejiang Province,where Moso were widely distributed.Bamboo stands of different management types started in 1984 were designed to investigate the effects of intensive management on SOC.The results showed:(1)The average of total organic carbon(TOC) and readily oxidation carbon(ROC) in 0-80 cm soil layer was increased by 5.48% and 15.14% respectively,while water soluble organic carbon(WSOC) was averagely decreased by 3.98% after intensive practice.(2) The vertical features of different fractions of organic carbon under two management models of bamboo stands were observed in decline trends with increasing of soil depths,while both of the drop speeds were different.Intensive practice affected the profile distribution of soil ROC to a certain extent.(3) TOC and ROC were extremely significantly correlated with soil nutrients,while WSOC wasn′t significantly related to soil nutrients.(4) The percentage of ROC to TOC and activity of carbon pool was increased significantly after intensive management in part of soil layers,but the percentage of WSOC to TOC was 3.74%,was below the extensive practice that was 4.10%.Therefore,to improve soil quality and achieve sustainable management of bamboo stands,a mixture of organic and inorganic manures with the proper ratio in bamboo stands under intensive management should be applied,combined with ploughing,weeding,reasonable bamboo leaving and bamboo cutting,which could fulfill a high yield of bamboo shoot and bamboo culm,maintain the ecological function of bamboo stands and improve the soil activities of biology and chemistry.

Soil carbon

Phyllostachys

Soil Quality

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Citations (0)

A novel dominant mutation in the SOX10 gene in a Chinese family with Waardenburg syndrome type�II

Molecular Medicine Reports (2019)

Jing Ma Zhen Zhang Hongchao Jiang Hao Sun Ming Cheng

Waardenburg syndrome type 2 (WS2) is a rare genetic disorder, characterized by bright blue eyes, moderate to profound hearing loss and pigmental abnormalities of the hair and skin. Between 10 and 20 mutations in the SRY‑box 10 (SOX10) gene were previously identified to be associated with WS2. The present study aimed to identify the genetic causes of WS2 in a Chinese family. Clinical and molecular analyses were performed to genetically characterize a Chinese family with two cases of WS2. The clinical data of the proband were collected using a questionnaire. The genomic DNA was extracted from peripheral blood samples of each individual in the family, and 168 candidate genes associated with hearing loss were sequenced using the Illumina HiSeq 2000 and confirmed by Sanger sequencing. A heterozygous nonsense mutation [substitution; position 127; cytosine to thymine (c.127C>T)] was identified in exon 2 of SOX10 (transcript ID: NM_006941.3) in the proband and the mother; however, not in other family members or healthy controls. The novel nonsense heterozygous mutation may cause the replacement of codon 43 [arginine (Arg)] with a stop codon (Arg43stop), leading to premature termination of protein translation. The novel nonsense heterozygous mutation c.127C>T in the SOX10 gene was considered to be the cause of WS2 in the family. This mutation has not been identified in any databases, to the best of the authors' knowledge, including The Single Nucleotide Polymorphism Database, The Human Gene Mutation Database, 1000 Genomes Project and ClinVar and Exome Sequencing Project v. 6500.

Nonsense mutation

Sanger sequencing

Proband

Compound heterozygosity

Waardenburg syndrome

Stop codon

10.3892/mmr.2019.9815

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Citations (9)

Maintaining the contract responsibility system of forest land distribution in China: Evidence from a novel financial compensation scheme in Daxi Village of Anji County, Zhejiang

Land Use Policy (2012)

Lucas Gutiérrez Rodríguez Manuel Ruíz Pérez Xiaosheng Yang Geriletu B. Belcher

Household income

Per capita income

Scarcity

10.1016/j.landusepol.2012.06.004

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Citations (9)

Neutron spin resonance as a probe of the superconducting energy gap ofBaFe1.9Ni0.1As2superconductors

Physical Review B (2010)

Jun Zhao L. P. Régnault Chenglin Zhang Miaoying Wang Zhengcai Li

We use inelastic neutron scattering to show that for the optimally electron-doped ${\text{BaFe}}_{1.9}{\text{Ni}}_{0.1}{\text{As}}_{2}$ $({T}_{c}=20\text{ }\text{K})$ iron arsenide superconductor, application of a magnetic field that partially suppresses the superconductivity and superconducting gap energy also reduces the intensity and energy of the resonance. These results demonstrate that the energy of the resonance is intimately connected to the electron pairing energy, and thus indicate that the mode is a direct probe for measuring electron pairing and superconductivity in iron arsenides.

10.1103/physrevb.81.180505

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Citations (39)

Superconductivity and phase diagram in iron-based arsenic-oxides ReFeAsO _1−δ (Re = rare-earth metal) without fluorine doping

EPL (Europhysics Letters) (2008)

Zhi‐An Ren Guangcan Che Xiaoli Dong Jie Yang Wei Lu

Here we report a new class of superconductors prepared by high-pressure synthesis in the quaternary family ReFeAsO1−δ (Re=Sm, Nd, Pr, Ce, La) without fluorine doping. The onset superconducting critical temperature (Tc) in these compounds increases with the reduction of the Re atom size, and the highest Tc obtained so far is 55 K in SmFeAsO1−δ. For the NdFeAsO1−δ compound with different oxygen concentration a dome-shaped phase diagram was found.

Fluorine

10.1209/0295-5075/83/17002

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Citations (687)

Energy-oriented bamboo species resources and potential for exploitation.

Shijie linye yanjiu (2006)

Benzhi Zhou Fu Maoyi Xiaosheng Yang Xie Jinzhong Zhengcai Li

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Citations (3)

Changes in Soil Organic Carbon after Bamboo Afforestation in Cropland

Forest Research Open Access (2006)

Zhengcai Li Fu Maoyi Deying Xu Sun Xue-zhong XI Jin-rong

This paper deals with the changing regularity of soil organic carbon(SOC) after afforestation in cropland,which showed:(1) in three years after afforestation,the contents of SOC were decreased in different soil profiles and the top soil profile(0～30 cm) was decreased more than that of the others;Three years later,due to the intensive management,the contents of SOC were increased quickly and up to nine years,the contents of SOC being larger than those of cropland;but twelve years later,the contents of SOC were decreased again because of the less intensive management.(2) The density of SOC showed almost the same tendency as the content of SOC;In three years,the density of SOC were decreased,later,the density of SOC was increased and in nine years,the density of SOC became larger than that of cropland;after nine yeas,the density of SOC were decreased again,but still more than those of cropland;(3) Three years after afforestation,the storage of SOC was decreased by 22%.After three years,the storage of SOC was increased gradually and in nine years,the storage of SOC became larger than that of cropland;In 12 years old stand,the storage of SOC was decreased,but larger than that of cropland.The content,density and storage of SOC all showed the tendency of decline,rising gradually,excessing and then decreasing.

Afforestation

Soil carbon

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Citations (3)

High-pressure study on LaFeAs(O _1−x F _x ) and LaFeAsO _δ with different T _c

EPL (Europhysics Letters) (2008)

Wei Yi Chao Zhang Liling Sun Zhi‐An Ren Wei Lu

We report studies on pressure dependence of superconducting transition temperature (Tc) of LaFeAsOδ (δ< 0.3), LaFeAs(O0.5F0.5) and LaFeAs(O0.89F0.11) samples. In situ resistance measurements under high pressure showed that the Tc of these three compounds increases with pressure initially, reaches a maximum value and then decreases with further increasing pressure, although Tc's at ambient pressure are different. The onset Tc of LaFeAsOδ is ∼50 K at 1.5 GPa, which is the highest record in La-based oxypnictide system. The significant change in Tc induced by pressure is attributed to the orbital degeneracy and the electron density of state at the Fermi level.

Superconducting transition temperature

Degeneracy (biology)

Ambient pressure

10.1209/0295-5075/84/67009

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Citations (23)