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Trade-offs and Synergies of Ecosystem Services in Karst Area of China Driven by Grain-for-Green Program

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Chinese Geographical Science 2020年第1期30卷 101-114页

作者： WANG Xiaofeng ZHANG Xinrong FENG Xiaoming liu shirong YIN Lichang CHEN Yongzhe School of Earth Science and Resources Chang'an UniversityXi'an 710054China Shaanxi Key Laboratory of Land Consolidation Xi'an 710054China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Institute of Forest Ecology Environment and ProtectionChinese Academy of ForestryBeijing 100091China

As an important means regulating the relationship between human and natural ecosystem,ecological restoration program plays a key role in restoring ecosystem *** Grain-for-Green Program(GFGP,One of the world’s most ambitious ecosystem conservation set-aside programs aims to transfer farmland on steep slopes to forestland or grassland to increase vegetation coverage)has been widely implemented from 1999 to 2015 and exerted significant influence on land use and ecosystem services(ESs).In this study,three ecological models(In VEST,RUSLE,and CASA)were used to accurately calculate the three key types of ESs,water yield(WY),soil conservation(SC),and net primary production(NPP)in Karst area of southwestern China from 1982 to *** impact of GFGP on ESs and trade-offs was *** provides practical guidance in carrying out ecological regulation in Karst area of China under global climate *** showed that ESs and trade-offs had changed dramatically driven by *** detail,temporally,SC and NPP exhibited an increasing trend,while WY exhibited a decreasing ***,SC basically decreased from west to east;NPP basically increased from north to south;WY basically increased from west to east;NPP and SC,SC and WY developed in the direction of trade-offs driven by the GFGP,while NPP and WY developed in the direction of ***,future ecosystem management and restoration policy-making should consider trade-offs of ESs so as to achieve sustainable provision of ESs.

关键词： ecosystem service trade-off and synergy Grain-for-Green Program partial correlation analysis Karst area China

Characteristics of typhoon disturbed gaps in an old-growth tropical montane rainforest in Hainan Island, China

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Journal of Forestry Research 2017年第6期28卷 1224-1232页

作者： Huai Yang shirong liu Kunfang Cao Jingxin Wang Yide Li Han Xu Research Institute of Tropical Forestry Chinese Academy of Forestry Key Laboratory of Forest Ecology and Environment of State Forestry Administration Institute of Forest EcologyEnvironment and Protection Chinese Academy of Forestry State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources and College of ForestryGuangxi University Division of Forestry and Natural Resources West Virginia University

Disturbances that create gaps can shape the structure and function of forests. However, such disturbance regimes in Asian tropical montane rainforests remain largely unquantified. Least studied are typhoon disturbances that are attributable to climate change. We investigated gap characteristics in terms of size, age, and gap-maker to quantify the gap disturbance regimes in an intact old-growth tropical montane rainforest on Hainan Island, China. The intensity of typhoons has increased since 1949, and typhoon winds blow mostly (45.5%) from the northeast corner of Hainan Island, resulting in a higher frequency of gaps in the northeast. A total of 221 gap-makers (trees that fell to create canopy gaps) and 53 gaps were observed in a 3.16 ha old-growth rainforest. Most canopy gaps (85%) were < 200 m(2). The average size of canopy gaps was smaller in the rainforest than in other tropical forests, while the average size of expanded gaps was similar to those in other tropical forests. The maximum age of gaps was 23.5 years indicating that gaps had more rapid turnover than other parts of tropical forests. The frequency distribution of gap-makers followed a lognormal distribution with a distinctive peak at three gap-makers, which was different from the inverse J-shaped curve typical of other tropical forests. Gaps were recorded mainly on slopes between 20A degrees and 35A degrees and wood density of gap-makers was between 0.6 and 0.7 g cm(-3). Our results suggest that small-scale disturbance was the dominant agent of gap formation in this old-growth rainforest that is subject to increasing typhoon disturbances.

关键词： Gap characteristics Gap-makers Old-growth Slope Tropical montane rainforest Typhoon disturbance Wood density

Landscape pattern and eco-hydrological characteristics at the upstream of Minjiang River,China

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Frontiers in Biology 2006年第4期1卷 455-462页

作者： LI Chongwei GE Jianping liu shirong SUN Pengsen College of Life Sciences Bejing Normal UniversityBeijing 100875China Institute of Forest Ecology Environment and ProtectionChinese Academy of ForestryBeijing 100091China College of Urban and Environment Sciences Tianjin Normal UniversityTianjin 300384China

Based on three scenes of Landsat 5 Thematic Mapper(TM)satellite images acquired on June 26,1994,12 land cover types were identified by the supervised classification *** precipitation,runoff,and normalized difference vegetation index(NDVI)data of six catchments were accumulated from April to September in 1992,1993,and 1995.A new eco-hydrological index,expressed by the difference between precipitation and runoff divided by the product of precipitation and NDVI,was used in this study to represent the eco-hydrological functions of different *** results were:(1)The selected six catchments at the upstream of Minjiang River,China were different in landscape patterns in terms of landscape type and *** were higher contagion,lower edge density and diversity index in the Shouxi catchments and lower contagion,higher edge density and diversity index in the Zagunao catchments.(2)Eco-hydrological indexes had remarkable differences among different *** highest eco-hydrological index was found in the Shouxi catchments,which indicated higher precipitation holding capacity of vegetation *** the lower eco-hydrological index was found in the Zagunao catchments,which indicated its lower precipitation holding capacity of vegetation.(3)High correlation was detected between the landscape indexes and eco-hydrological ***-hydrological index was positively correlated with landscape contagion in contrast with the negative correlation with landscape diversity and edge density.

关键词： precipitation runoff landscape pattern eco-hydrological index

Preparation and Stability Evaluation of Size-Controllable PDHCA-β-CD Nanoparticles as Drug Carrier

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Chinese Journal of Chemistry 2017年第7期35卷 1125-1132页

作者： Hong Chu Xue Zhao shirong liu Zhongbin Ni Dongjian Shi Mingqing Chen School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu 214122 China The Key Laboratory of Food Colloids andBiotechnology Ministry of Education Jiangnan University Wuxi Jiangsu 214122 China

A novel biocompatible polymer was prepared by grafting the derivate of β-cyclodextrin （6-SH-β-CD） onto poly（3,4-dihydroxycinnamic acid）（PDHCA） via Michael addition. PDHCA-β-CD nanoparticles were prepared by the self-assembly of amphiphilic PDHCA-β-CD polymer with N,N-dimethylformamide （DMF） as good solvent and water as poor solvent. The PDHCA-β-CD nanoparticles were monodispersed with spherical morphology as shown in the scanning electron microscopic （SEM） images in accord with the result of dynamic light scattering （DLS） measurement. The size of the nanoparticles could be controlled from 60 to 180 nm by tuning the grafting degree （GD） of PDHCA-β-CD polymer and also significantly influenced by the amount of water used during the process. These as-prepared nanoparticles were stable without any significant change in the particle size after six-months＇ storage and even after being irradiated by UV at 2〉280 nm for hours. The formation mechanism of PDHCA-β-CD nanoparticles was explored. The content of doxombicin （DOX） loaded onto the nanoparticles was up to 39% with relatively high loading efficiency （approximately 78.8% of initial DOX introduced was loaded）. In vitro release studies suggested that DOX released slowly from PDHCA-β-CD nanoparticles. These features strongly support the potential of developing PDHCA-β-CD nanoparticles as carriers for the controlled delivery of drug.

关键词： PDHCA-β-CD nanoparticles controllable and desirable size high stability drug carrier

Species composition and correlation of understory woody plants in Chinese fir plantation in the lower subtropical area

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Frontiers in Biology 2006年第4期1卷 423-429页

作者： KANG Bing liu shirong CAI Daoxiong WEN Yuanguang College of Life Sciences Northwest Sci-Tech University of Agriculture and ForestryYangling 712100China Institute of Forest Ecology Environment and Protectionthe Chinese Academy of ForestryBeijing 100091China Experiment Center of Tropical Forestry the Chinese Academy of ForestryPingxiang 532600China Forestry College Guangxi UniversityNanning 530001China

There are 71 species in the shrub layer of the Cunninghamia lanceolata plantation after natural *** species richness and diversity have increased with slight anthropogenic *** status and function of understory woody species were judged by the analysis of the important value(IV).χ2 statistics and r test were used for testing the significance of interspecific association and correlation among 25 main understory woody plants selected from the woody *** results clearly showed their interspecific relationships and their differences in resource ***-pairs of positive association were in the *** species were accommodated in the shady *** was a positive correlation between the IV of the species and the interspecific *** higher the IV of the species,the closer and more significant was the interspecific *** on analytical results of interspecific association and correlation,25 woody plants in the shrub layer could be divided into four ecological species groups:*** hispida+Antidesma bunius+Mallotus barbatus+Ficus cunia+Saurauia tristyla+Mallotus philippinensis+Maesa japonica+Ficus hirta+Alchornea rugosa+Ficus fulva+Mallotus apelta;*** tricuspidata+Schefflera octophylla;*** lanceolata+Clerodendron cytophyllum+Millettia semicastrata+Randia spinosa+Litsea cubeba+Litsea pungens;*** japonica+Psychotria rubra+Vitex quinata+Cephalanthus occidentalis+Pithecellobium lucidum+Mycetia *** species group III or II is the advantaged species in the shrub layer,the community would change from a coniferous forest to a sparse evergreen broad-leaved *** group IV,the community would be relatively *** group I,the coniferous forest would be mixed with coniferous-broad leaved *** classification of ecological species groups would provide a theoretical basis on judging its ecological function,adjusting the stand structure of the plantation and direct

关键词： the lower subtropical area Cunninghamia lanceolata man-made forest close-natural state understory shrub composition interspecific association and correlation ecological species groups

Drought can offset potential water use efficiency of forest ecosystems from rising atmospheric CO2

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Journal of Environmental Sciences 2020年第4期32卷 262-274页

作者： Ning liu Jatin Kala shirong liu Vanessa Haverd Bernard Dell Keith R.J.Smettem Richard J.Harper Environmental and Conservation Sciences Murdoch UniversityMurdochWA 6150 Australia Research Institute of Forest Ecology Environment and ProtectionChinese Academy of ForestryBeijing 10091 China CSIRO Oceans&Atmosphere ACT 2600 Australia

Increasing atmospheric CO2 is both leading to climate change and providing a potential fertilisation effect on plant ***,southern Australia has also experienced a significant decline in rainfall over the last 30 years,resulting in increased vegetative water *** better understand the dynamics and responses of Australian forest ecosystems to drought and elevated CO2,the magnitude and trend in water use efficiency(WUE)of forests,and their response to drought and elevated CO2 from 1982 to 2014 were analysed,using the best available model estimates constrained by observed fluxes from simulations with fixed and time-varying *** ratio of gross primary productivity(GPP)to evapotranspiration(ET)(WUEe)was used to identify the ecosystem scale WUE,while the ratio of GPP to transpiration(Tr)(WUEc)was used as a measure of canopy scale *** increased significantly in northern Australia(p<0.001)for woody savannas(WSA),whereas there was a slight decline in the WUE of evergreen broadleaf forests(EBF)in the southeast and southwest of *** lag of WUEc to drought was consistent and relatively short and stable between biomes(<3 months),but notably varied for WUEe,with a long time-lag(mean of 10 months).The dissimilar responses of WUEe and WUEc to climate change for different geographical areas result from the different proportion of Tr in ***2 fertilization and a wetter climate enhanced WUE in northern Australia,whereas drought offset the CO2 fertilization effect in southern Australia.

关键词： Water use efficiency Elevated CO2 Carbon sequestration,drought Forest Australia

Reconciliation of research on forest carbon sequestration and water conservation

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Journal of Forestry Research 2021年第1期32卷 7-14页

作者： Tanzeel Javaid Aini Farooqi Xuhua Li Zhen Yu shirong liu Osbert Jianxin Sun School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing 100083People’s Republic of China Sichuan Academy of Forestry Chengdu 610081People’s Republic of China School of Applied Meteorology Nanjing University of Information Science and TechnologyNanjing 210044People’s Republic of China State Forestry and Grassland Administration of China Key Laboratory of Forest Ecology and Environment Institute of Forest EcologyEnvironment and ProtectionChinese Academy of ForestryBeijing 100091People’s Republic of China

Carbon sequestration and water conservation are two of the key ecosystem services that forests provide for societal need to address environmental *** of the dual services is the ultimate goal in forest management for mitigating global climate change and safeguarding terrestrial water ***,there are some tradeoff s between gain in forest productivity and ecosystem water *** conducted literature review based on published articles for learned knowledge on forest carbon fi xation and hydrological *** knowledge gaps and research needs are identifi ed by examining the inter-connections between forest carbon sequestration and water *** researches have helped gain basic understanding of the mechanisms and controls of forest carbon fi xation and hydrological regulations as two separate *** and approaches are well established for quantifying and monitoring forest carbon and hydrological issues,operating at diff erent spatial and temporal *** are knowledge gaps on how to design aff orestation schemes facilitating enhanced ecosystem services in forest carbon sequestration and water *** the top-down planning of aff orestation in regions where water availability is anticipated to be problematic,the questions of how much and where to plant for given land availability,known environmental implications,and sustained regional development and livelihood need to be *** local management considerations,the questions of what and how to plant *** orts are needed in joint studies of forest carbon sequestration and water conservation functionalities,specifi cally in relation to establishment and management of planted forests aiming for delivering regulatory ecosystem services in carbon sequestration,water conservation and other social *** propose an integrated framework with dual consideration of carbon sequestration and water conservation in forest management for future researc

关键词： Carbon balance Ecosystem services Forest management Hydrological processes Tradeoff

Different mechanisms underlying divergent responses of autotrophic and heterotrophic respiration to long-term throughfall reduction in a warm-temperate oak forest

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Forest Ecosystems 2021年第3期8卷 537-547页

作者： Jinglei Zhang shirong liu Cuiju liu Hui Wang Junwei Luan Xiaojing liu Xinwei Guoand Baoliang Niu Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration Research Institute of Forest EcologyEnvironment and ProtectionChinese Academy of ForestryBeijing 100091China Institute of Resources and Environment Key Laboratory of Bamboo and Rattan Science and Technology of the State Forestry and Grassland AdministrationInternational Centre for Bamboo and RattanBeijing 100102China Baotianman Natural Reserve Administration Neixiang 474350China

Background:There are many studies on disentangling the responses of autotrophic(AR)and heterotrophic(HR)respiration components of soil respiration(SR)to long-term drought,but few studies have focused on the mechanisms underlying its ***:To explore the impact of prolonged drought on AR and HR,we conducted the 2-year measurements on soil CO_(2) effluxes in the 7th and 8th year of manipulated throughfall reduction(TFR)in a warm-temperate oak ***:Our results showed long-term TFR decreased HR,which was positively related to bacterial *** importantly,some bacterial taxa such as Novosphingobium and norank Acidimicrobiia,and fungal Leptobacillium were identified as major drivers of *** contrast,long-term TFR increased AR due to the increased fine root biomass and *** increased AR accompanied by decreased HR appeared to counteract each other,and subsequently resulted in the unchanged SR under the ***:Our study shows that HR and AR respond in the opposite directions to long-term *** microorganisms and fine roots account for the respective mechanisms underlying the divergent responses of HR and AR to long-term *** highlights the contrasting responses of AR and HR to prolonged drought should be taken into account when predicting soil CO_(2) effluxes under future droughts.

关键词： Prolonged drought CO_(2)efflux Fine root Bacterial community Fungal community

Variations in leaf litter decomposition across contrasting forest stands and controlling factors at local scale

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Journal of Plant Ecology 2015年第3期8卷 261-272页

作者： Juan Wang Yeming You Zuoxin Tang shirong liu Osbert Jianxin Sun College of Forest Science Beijing Forestry University35 Qinghua East RoadHaidianBeijing 100083China Institute of Forestry and Climate Change Research Beijing Forestry University35 Qinghua East RoadHaidianBeijing 100083China State Forestry Administration of China Key Laboratory of Forest Ecology and Environment Institute of Forest EcologyEnvironment and ProtectionChinese Academy of ForestryBeijing 100091China

Aims litter decomposition is a critical pathway linking the above-and belowground ***,factors underlying the local spatial variations in forest litter decomposition are still not fully *** investigated leaf litter decomposition across con-trasting forest stands in central China,with objective to determine the spatial variations and controlling factors in forest floor leaf lit-ter decomposition in relation to changes in forest stands in a tem-perate forest *** leaf litter decomposition was studied by using litterbag method across several typical forest stand types in baotianman Nature reserve,central China,including pure stands of Quercus aliena ***,*** *** and ***-abilis,respectively,and mixed pine/oak stands dominated by Pinus armandii and *** ***,as well as stands of pure *** *** trees ranging in stand age from~40 to>160 *** were made on litter mass remaining and changes in litter chemistry during decomposition over a 2-year period,along with data collections on selective biotic and environmental factors.a reciprocal transplant experiment involv-ing *** *** and *** was concurrently carried out to test the occurrence of‘home-field advantage(HFa)’in local forests when only considering contrasting oak tree *** analyses and path analyses were performed to identify the dominant drivers and their relative contributions to variations in leaf litter *** findingssignificant variations were found in the rate of leaf litter decomposi-tion among stands of different tree species but not among stand age *** values of decay constant,k,varied from 0.62 in *** *** stands to 0.56 in *** *** reciprocal litter transplant experiment showed that the rate of leaf litter decom-position was on average 5%slower in home-fields than on recipro-cal *** a

关键词： litter decomposition N retention oak forest path analysis reciprocal litter transplant