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Impact of Wetland Change on Local Climate in Semi-arid Zone of Northeast China

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Chinese Geographical Science 2015年第3期25卷 309-320页

作者： LIU Yan sheng lianxi LIU Jiping State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration Northeast Normal University Institute of Ecology and Environment Jilin Normal University

Wetlands are sensitive to climate change, in the same time, wetlands can influence climate. This study analyzed the spa- rio-temporal characteristics of wetland change in the semi-arid zone of Northeast China from 1985 to 2010, and investigated the impact of large area of wetland change on local climate. Results showed that the total area of wetlands was on a rise in the study area. Although natural wetlands （marshes, riparians and lakes） decreased, constructed wetlands （rice fields） increased significantly, and the highest in- crease rate in many places exceeded 30%. Anthropogenic activities are major driving factors for wetland change. Wetland change pro- duced an impact on local climate, mainly on maximum temperature and precipitation during the period of May-September. The increase （or decrease） of wetland area could reduce （or increase） the increment of maximum temperature and the decrement of precipitation. The changes in both maximum temperature and precipitation corresponded with wetland change in spatial distribution. Wetland change played a more important role in moderating local climate compared to the contribution of woodland and grassland changes in the study area. Cold-humid effect of wetlands was main way to moderating local climate as well as alleviating climatic wanning and drying in the study area, and heterogeneity of underlying surface broadened the cold-humid effect of wetlands.

关键词： wetland change local climate rice field semi-arid zone Northeast China

Distribution and Accumulation of Soil Carbon in Temperate Wetland, Northeast China

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Chinese Geographical Science 2016年第3期26卷 295-303页

作者： LYU Mingzhi sheng lianxi ZHANG Zhongsheng ZHANG Li Northeast Normal University Changchun 130024 China State Environment Protection Key Laboratory of Wetland Ecology and Vegetation Restoration Changchun 130117 China Key Laboratory of Wetland Ecology and Environment Institute of Northeast Geography and Agroecology Chinese Academy of Sciences Changchun 130012 China Everglades Wetland Research Park Florida Gulf Coast University Naples FL 34112 U.S.A.

Estimating carbon sequestration and nutrient accumulation rates in Northeast China are important to assess wetlands function as carbon sink buffering greenhouse gas increasing in North Asia. The objectives of this study were to estimate accreting rates of carbon and nutrients in typical temperate wetlands. Results indicated that average soil organic carbon(SOC), total nitrogen(TN) and total phosphorus(TP) contents were 37.81%, 1.59% and 0.08% in peatlands, 5.33%, 0.25% and 0.05% in marshes, 2.92%, 0.27% and 0.10% in marshy meadows, respectively. Chronologies reconstructed by 210 Pb in the present work were acceptable and reliable, and the average time to yield 0–40 cm depth sediment cores was 150 years. Average carbon sequestration rate(Carbonsq), nitrogen and phosphorus accumulation rates were 219.4 g C/(m^2·yr), 9.16 g N/(m^2·yr) and 0.46 g P/(m^2·yr) for peatland; 57.13 g C/(m^2·yr), 5.42 g N/(m^2·yr) and 2.16 g P/(m^2·yr) for marshy meadow; 78.35 g C/(m^2·yr), 8.70 g N/(m^2·yr) and 0.71 g P/(m2·yr) for marshy; respectively. Positive relations existed between Carbonsq with nitrogen and precipitations, indicating that Carbonsq might be strengthened in future climate scenarios.

关键词： carbon sequestration nutrients accumulation temperate wetlands Northeast China

Growth and Carbon Metabolism Responses to Flooding Timing and Frequency in Three Marsh Plants in Sanjiang Plain

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湿地科学 2014年第1期12卷 15-21页

作者： LIU Zinan WANG Xue LUO Wenbo sheng lianxi Key Laboratory for Wetland Ecology and Vegetation Restoration of National Environmental Protection Northeast Normal University Changchun 130024 Jilin P.R.China Division of Biological Sciences University of Montana Missoula 59812 USA

Flooding timing and frequency may have different effects on the growth and carbon metabolism of plants in wetlands. We tested this hypothesis using three marsh plants in Sanjiang Plain, which were growing in different flooding timing and frequency environments for 24 days. The three marsh plants in different elevations along a water-level gradient, high-elevation species Calamagrostis angustifolia, mid-elevation species Carex limosa and low-elevation species Carex lasiocarpa. Our experiment included 6 kinds of treatments: control, longer flooding timing, medial flooding timing and frequency(2 treatments), and higher flooding frequency(2 treatments). Longer flooding timing and higher flooding frequency treatments led to similar reductions in biomass accumulation and relative growth rate of Calamagrostis angustifolia, whereas growth of Carex limosa was not affected by either flooding timing or frequency. However, biomass accumulation and relative growth rate of Carex lasiocarpa was only reduced by the higher flooding frequency. Starch and soluble sugar contents of Calamagrostis angustifolia were negatively affected by flooding frequency. On Carex limosa, higher flooding frequency resulted in higher starch content, but longer flooding timing led to accumulated starch content in Carex lasiocarpa. Soluble sugar contents of Carex lasiocarpa and Carex li mosa were not affected by either flooding timing or flooding frequency. These results indicated that growth responses of the three marsh plants to flooding timing and frequency was closely related to the different physiology of carbohydrate metabolism.

关键词：植物学研究演化植物生理学

Mapping Deciduous Broad-leaved Forested Swamps Using ALOS/Palsar Data

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Chinese Geographical Science 2016年第3期26卷 352-365页

作者： BIAN Hongfeng YAN Tingting ZHANG Zhengxiang HE Chunguang sheng lianxi State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration School of Environment Northeast Normal University School of Geographical Sciences Northeast Normal University

Accurate, updated information on the distribution of wetlands is essential for estimating net fluxes of greenhouse gases and for effectively protecting and managing wetlands. Because of their complex community structure and rich surface vegetation, deciduous broad-leaved forested swamps are considered to be one of the most difficult types of wetland to classify. In this research, with the support of remote sensing and geographic information system, multi-temporal radar images L-Palsar were used initially to extract the forest hydrological layer and phenology phase change layer as two variables through image analysis. Second, based on the environmental characteristics of forested swamps, three decision tree classifiers derived from the two variables were constructed to explore effective methods to identify deciduous broad-leaved forested swamps. Third, this study focused on analyzing the classification process between flat-forests, which are the most severely disturbed elements, and forested swamps. Finally, the application of the decision tree model will be discussed. The results showed that: 1) L-HH band(a L band with wavelength of 0–235 m in HH polarization mode; HH means Synthetic Aperture Radars transmit pulses in horizontal polarization and receive in horizontal polarization) in the leaf-off season is shown to be capable of detecting hydrologic conditions beneath the forest; 2) the accuracy of the classification(forested swamp and forest plat) was 81.5% based on hydrologic features, and 83.5% was achieved by combining hydrologic features and phenology response features, which indicated that hydrological characteristics under the forest played a key role. The HHOJ(refers to the band created by the subtraction with HH band in October and HH band in July) achieved by multi-temporal radar images did improve the classification accuracy, but not significantly, and more leaf-off radar images may be more efficient than multi-seasonal radar images for inland forested sw

关键词： forested swamp Palsar radar images forest hydrological characteristics multi-temporal technique decision tree classifier

Foraging areas of Rousettus leschenaulti on the Hainan Island of China

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Current Zoology 2010年第4期56卷 479-484页

作者： Zhanhui TANG Zhong CHEN Jie MA Guangjian ZHU Xunfeng MA lianxi sheng Yuchun LI Department of Environmental Science and Engineering North East Normal University Changchun 130024 China College of Life Science Hainan Normal University Haikou Hainan 571158 China Department of Biophysics and Physiology Georgetown University Medical Center Washington D.C. 20057 USA Guangdong Entomological Institute Guangzhou 510260 China Marine College Shandong University at Weihai Weihai 264209 China

We investigated the foraging area of three individuals (1 female and 2 males) of Rousettus leschenaulti (Chiroptera,Pteropodidae) in suburban Haikou City, Hainan Province, South China from November 2005 to January 2006 using radio *** animals left the daytime roosting sites about 90 min after sunset with no significant difference in departure time betweenthe male and female bats. The average active times were 391.8 min for males and 533.7 min for the female, *** reconstructing 93 radio-telemetry recording positions, we found that the long axis of foraging area of the bats ranged from7.45 to 11.70 km. The foraging area of the female (3867 ha) was larger than that of the males (1138 ha), and there was overlapbetween the foraging areas of different individuals. These bats usually kept the same flight routes across a few successive daysfrom the daytime roosting site to the foraging areas. Our findings suggested that female R. leschenaulti may explore a larger foragingarea than males. No obvious territorial behaviors were observed in our studied area.

关键词： Rousettus leschenaulti Foraging behavior Radio-tracking Hainan Island

Measurement of light polarization characteristics from an oil-polluted soil surface in near-infrared bands

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Chinese Science Bulletin 2009年第9期54卷 1607-1612页

作者： WANG Yuan sheng lianxi LI Ke ZHAO NaiZhuo ZHAO Yunsheng College of Urban and Environmental Sciences Northeast Normal University Changchun 130024 China State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration Northeast Normal Univesity Changchun 130024 China School of Municipal and Environmental Engineering Jilin Institute of Architecture and Civil Engineering Changchun 130021 China

Oil pollution can be monitored by infrared remote sensing technology. In this work, the degree of po-larization (DOP) was established as a quantitative index of oil pollution. The crude oil and the local typical surface soil from the Songyuan oil field in Jilin province were collected. Some soil samples with four levels of oil content and three levels of water content were prepared and measured. The DOP of the polluted soil and the clean soil in the field was also measured at 180° relative viewing azimuth angle, and 10°, 30° and 50° viewing zenith angles. It was found that with rising soil oil content, the DOP of the reflected light on the soil surface increased when the soil water content was low, and decreased when the soil water content was high.

关键词：土壤表面石油污染近红外波段光偏振特性测量土壤水分含量红外遥感技术定量指标

Cullin-RING Ubiquitin Ligase Family in Plant Abiotic Stress Pathways

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Journal of Integrative Plant Biology 2013年第1期55卷 21-30页

作者： Liquan Guo Cynthia D.Nezames lianxi sheng Xingwang Deng Ning Wei Department of Molecular Cellular and Developmental BiologyYale University State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration Northeast Normal University Department of Biological Engineering Jilin Business and Technology College

The ubiquitin-proteasome system is a key mechanism that plants use to generate adaptive responses in coping with various en- vironmental stresses. Cullin-RING （CRL） complexes represent a predominant group of ubiquitin E3 ligases in this system. In this review, we focus on the CRL E3s that have been implicated in abiotic stress signaling pathways in Arabidopsis. By comparing and analyzing these cases, we hope to gain a better understanding on how CRL complexes work under various settings in an attempt to decipher the clues about the regulatory mechanism of CRL E3s.

关键词： Abiotic stress abscisic acid CRL ubiquitin ligase Cullin-RING DNA damage.

Effects and driving factors of domestic sewage from different sources on nitrous oxide emissions in a bog

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Journal of Plant Ecology 2024年第5期17卷 52-64页

作者： Yue Li Zhongbing Chen Xue Wang Haibo Jiang Chunguang He Yao Shi lianxi sheng State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration School of EnvironmentNortheast Normal UniversityChangchun 130000China Key Laboratory for Vegetation Ecology Ministry of EducationNortheast Normal UniversityChangchun 130000China Department of Applied Ecology Faculty of Environmental SciencesCzech University of Life Sciences PraguePraha-Suchdol 16500Czech Republic College of Engineering Jilin Normal UniversitySiping 136000China

Direct sewage discharge may enhance soil nitrous oxide(N_(2)O)emissions,worsening the greenhouse ***,the effects of sewage discharge into bogs on N_(2)O flux,drivers and influencing mechanisms remain ***,investigating the impact of reclaimed water on N_(2)O flux is important for bog replenishment and water shortage *** study simulated sewage from different sources into a bog and analyzed N_(2)O fluxes,soil(organic carbon,total nitrogen,ammonium nitrogen,nitrate nitrogen,total phosphorus,available phosphorus,pH and electrical conductivity),plant(species richness and biomass)and microorganisms(ammonia-oxidizing archaea,napA,nirS,nirK and nosZ genes).Results showed that the reclaimed water did not significantly change N_(2)O flux,while 50%tap water mixed with 50%domestic sewage and domestic sewage significantly increased the N_(2)O *** soil factors,available nitrogen and pH were key in influencing N_(2)O *** plant parameters,species richness was the primary factor affecting N_(2)O *** transformation functional genes contributed the most to the increase in the N_(2)O fluxes,with an increase in domestic sewage input leading to a higher abundance of these genes and subsequent N_(2)O ***,domestic sewage should be considered,as it significantly increases N_(2)O emissions by affecting the soil,plants and microorganisms,thereby increasing the global warming *** study’s findings suggest that using treated reclaimed water for bog replenishment could be an environmentally friendly approach to wetland management.

关键词： sewage bog N_(2)O flux species richness nitrogen transformation functional microorganism

Relationship between echolocation frequency and body size in two species of hipposiderid bats

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Chinese Science Bulletin 2000年第17期45卷 1587-1590页

作者： ZHANG Shuyi ZHAO Huihua FENG Jiang sheng lianxi WANG Hui WANG Lixin Institute of Zoology Chinese Academy of SciencesBeijing 100080China Department of Environmental Science Northeast Normal UniversityChangchun 130024China Department of Psychology Beijing Normal UniversityBeijing 100875China

Frequencies of echolocation calls with maximum power of Himalayan leaf-nosed bats and Horsfield’s leaf-nosed bats during searching phase were 74.1 and 92.1 kHz, respectively. Head-body length, forearm length and body mass of Himalayan leaf-nosed bats were 82.9 mm, 89.7 mm and 59.1 g, respectively; and the corresponding values of Horsfield’s leaf-nosed bats were 68.4 mm, 61.3 mm and 19.7 g, respectively. Echolocation frequency and the three parameters of body size, head-body length, forearm length and body mass, were all negatively correlated, and the correlation coefficients were -0.86, -1.58 and -2.19, respectively. This study thereby proved that echolocation frequency and body size were negatively correlated in the two species of hipposiderid bats.

关键词： Himalayan leaf-nosed bats (Hipposideros armiger) Horsfield’s leaf-nosed bats (Hipposideros larvatus) echolocation calls body size.