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Characteristics of canopy interception and its simulation with a revised Gash model for a larch plantation in the Liupan Mountains, China

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Journal of Forestry Research 2018年第1期29卷 187-198页

作者： Zebin Liu Yanhui Wang Ao Tian Yu Liu Ashley A.Webb Yarui Wang Haijun Zuo Pengtao Yu Wei Xiong Lihong Xu Institute of Forest Ecology Environment and ProtectionChinese Academy of Forestry Key Laboratory of Forestry Ecology and Environment of State Forestry Administration College of Soil and Water Conservation Beijing Forestry University NSW Department of Primary Industries Tamworth Agricultural Institute

Canopy interception is a significant proportion of incident rainfall and evapotranspiration of forest ecosystems. Hence, identifying its magnitude is vital for studies of eco-hydrological processes and hydrological impact evaluation. In this study, throughfall, stemflow and interception were measured in a pure Larix principis-rupprechtii Mayr.（larch） plantation in the Liupan Mountains of northwestern China during the growing season（May–October） of 2015, and simulated using a revised Gash model. During the study period, the total precipitation was 499.0 mm; corresponding total throughfall, stemflow and canopy interception were 410.3, 2.0 and 86.7 mm,accounting for 82.2, 0.4 and 17.4% of the total precipitation, respectively. With increasing rainfall, the canopy interception ratio of individual rainfall events decreased initially and then tended to stabilize. Within the study period, the simulated total canopy interception, throughfall and stemflow were 2.2 mm lower, 2.5 mm higher and 0.3 mm lower than their measured values, with a relative error of 2.5, 0.6 and 15.0%, respectively. As quantified by the model, canopy interception loss（79%） mainly consisted of interception caused by canopy adsorption, while the proportions of additional interception and trunk interception were small. The revised Gash model was highly sensitive to the parameter of canopy storage capacity,followed by the parameters of canopy density and mean rainfall intensity, but less sensitive to the parameters of mean evaporation rate, trunk storage capacity, and stemflow ratio. The revised Gash model satisfactorily simulated the total canopy interception of the larch plantation within the growing season but was less accurate for some individual rainfall events, indicating that some flaws exist in the model structure. Further measures to improve the model’s ability in simulating the interception of individual rainfall events were suggested.

关键词： Canopy interception larch plantation Revised Gash model Stemflow Throughfall

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STUDY ON RETAINING FUNCTION OF larch plantation

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Journal of Northeast Forestry University 1995年第1期6卷 43-45页

作者：蔡体久刘亚范 Northeast Forestry University China

Based on the data accumulated through two year research work forest hydrology study was conducted at Lao Shan plantation experimental station of Maoer Shan Forest Farm.The experiment reuslts on detention of precipitation, permeability of stand soil water holding capacity, formation and regulation of runoff are discussed in the this paper. The major results in this study are as follows: (1)the function of forest in intercepting and storing rainwater is the outcome of integrating action of stand and soli, while the thickness of soil layers is the important factor which affects the water intercepting and holding capacity of forest. (2)The larch forest land had higher permeability, its stable infiltration velocity is twice as much as that of grassland. (3) It is proved that the interflow and groundwater runoff are the major forms of runoff occured in larch forest land.

关键词： larch plantation Interception Retain flood

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Health Assessment Indicator System for larch plantation in Jin’gouling Forest Farm, Jilin Province

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Chinese Forestry Science and Technology 2011年第3期10卷 31-38页

作者： WANG Fang1 ZHENG Xiaoxian1 HU Yang1 LIU Bo2 1. School of Forest, Beijing Forestry University, Beijing 100083, P. R. China 2. Municipal Bureau of Landscape and Forestry of Dongping County, Dongping 271500, P. R. China

For the healthy management of plantation, a health assessment indicator system was designed at forest stand scale for the larch plantation in Jin'ouling Forest Farm, Wangqing Forestry Bureau, Jilin Province. The system consisted of 3 categories—forest structure, external interferences and management objectives, with 15 indicators. The results showed that: 1) the assessment indicator system was scientific and rational for different age groups of larch plantations; 2) both the half-mature larch plantation and mature larch plantation were semi-healthy, while the near-mature plantation was healthy. The commons of all these plantations were structural integrity, little or no pest diseases and managed by appropriate operating activities; 3) the major problems included single tree species and relatively slow growing in the half-mature larch plantations; in the near-mature plantation, the number of grass species was less; and in the farm, the stock volume of mature plantations was below the average. Therefore, the half-mature larch forest should be thinned to improve the growth and the mature forest should be cut in time.

关键词： larch plantation health assessment evaluation index

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Environmental and canopy conditions regulate the forest floor evapotranspiration of larch plantations

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Forest Ecosystems 2022年第5期9卷 606-616页

作者： Zebin Liu Yanhui Wang Pengtao Yu Lihong Xu Songping Yu Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration Ecology and Nature Conservation InstituteChinese Academy of ForestryBeijing100091China School of Soil and Water Conservation Beijing Forestry UniversityBeijing100083China

Background:Integrated forest-water management focusing on forest-water coordination is an important way to alleviate water use conflicts among forests and other sectors in vast dryland regions.Forest floor evapotranspiration(FE),which is an important component of forest evapotranspiration,accounts for a large proportion of the water consumed in arid forests.Elucidating how environmental and canopy conditions impact FE has important significance for guiding integrated forest-water management in a changing environment.Methods:The microlysimeter(ML)-measured evapotranspiration(FE_(ML)),reference evapotranspiration(ET_(o)),volumetric soil moisture(VSM),and canopy leaf area index(LAI)were monitored in a Larix principis-rupprechtii plantation located in the semi-humid Liupan Mountains of Northwest China in 2019(June–September)and 2021(May–September).The response functions of the FE coefficient(the ratio of daily FEML to ET_(o))to the individual factors of VSM and LAI were determined using upper boundary lines of scatter diagrams of measured data.The framework of the daily FE(FE_(ML))model was established by multiplying the response functions to individual factors and then calibrated and validated using measured data to assess the FE response to environmental and canopy conditions.Results:(1)The FE coefficient increased first rapidly and then slowly with rising VSM but decreased slowly with rising LAI.(2)The simple daily FE(FE_(ML))model developed by coupling the impacts of ET_(o),LAI,and VSM in this study performed well for predicting FE.(3)The impacts of ET_(o),LAI,and VSM were quantified using the FE(FE_(ML))model,e.g.,at a given VSM,the impact of ETo on FE increased obviously with decreasing LAI;at a given ET_(o),the impact of LAI on FE increased with rising VSM.(4)In the two study years,when directly using the microlysimeter measurement,the real FE on the forest floor was overestimated when the VSM in microlysimeters was above 0.215 but underestimated below 0.215 due to the difference in VSM from the forest floor.T

关键词： larch plantation Forest floor evapotranspiration Reference evapotranspiration Soil water content Canopy structure

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Effects of continuous nitrogen addition on microbial properties and soil organic matter in a Larix gmelinii plantation in China

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Journal of Forestry Research 2018年第1期29卷 85-92页

作者： Kai Yang Jiaojun Zhu Jiacun Gu Shuang Xu Lizhong Yu Zhengquan Wang Qingyuan Forest Chinese Ecosystem Research Network Chinese Academy of Sciences Key Laboratory of Forest Ecology and Management Institute of Applied Ecology Chinese Academy of Sciences School of Forestry Northeast Forestry University

Continuous increases in anthropogenic nitrogen（N） deposition are likely to change soil microbial properties, and ultimately to affect soil carbon（C） storage.Temperate plantation forests play key roles in C sequestration, yet mechanisms underlying the influences of N deposition on soil organic matter accumulation are poorly understood. This study assessed the effect of N addition on soil microbial properties and soil organic matter distribution in a larch（Larix gmelinii） plantation. In a 9-year experiment in the plantation, N was applied at100 kg N ha-1 a-1 to study the effects on soil C and N mineralization, microbial biomass, enzyme activity, and C and N in soil organic matter density fractions, and organic matter chemistry. The results showed that N addition had no influence on C and N contents in whole soil. However,soil C in different fractions responded to N addition differently. Soil C in light fractions did not change with N addition, while soil C in heavy fractions increased significantly. These results suggested that more soil C in heavy fractions was stabilized in the N-treated soils. However,microbial biomass C and N and phenol oxidase activity decreased in the N-treated soils and thus soil C increased in heavy fractions. Although N addition reduced microbial biomass and phenol oxidase activity, it had little effect on soil C mineralization, hydrolytic enzyme activities, d13 C value in soil and C–H stretch, carboxylates and amides, and C–O stretch in soil organic matter chemistry measured by Fourier transform infrared spectra. We conclude that N addition（1） altered microbial biomass and activity without affecting soil C in light fractions and（2） resulted in an increase in soil C in heavy fractions and that this increase was controlled by phenol oxidase activity and soil N availability.

关键词： Enzyme activity larch plantation Microbial biomass Nitrogen addition Soil carbon accumulation Soil organic matter fractions

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Using multi-source remote sensing data to classify larch plantations in Northeast China and support the development of multi-purpose silviculture

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Journal of Forestry Research 2018年第4期29卷 888-903页

作者： Guiduo Shang Jiaojun Zhu Tian Gao Xiao Zheng Jinxin Zhang CAS Key Laboratory of Forest Ecology and Management Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 People's Republic of China Qingyuan Forest CERN Chinese Academy of Sciences Shenyang 110016 People's Republic of China University of Chinese Academy of Sciences Beijing 100049 People's Republic of China

Due to increasing timber demands, large areas of secondary forests have been converted to larch plantations （LPs） in Northeast China because the secondary forests could not produce timber as much as LPs. However, there are a series of ecological problems such as lower soil fertility, reduced water-holding capacity and acidification of surface runoff water occurring in LPs because of the single-species composition of LPs. Therefore, a guidance on how to transform LPs into larch-broadleaf mixed forests （LBMFs） at a large spatial scale is needed for local foresters. First, Landsat time series data set and SPOT-5 images were combined to map the spatial-temporal distribution of LPs in Northeast China. Then, the topographical characteristics of LPs in 2010s were determined. Furthermore, three sub-regions of LPs were divided closely linking to their ecosystem services and forest management aims. Finally, detailed information on how to transform the LPs into LBMFs was given according to the three sub-regions. The results showed that the area of LPs increased during 1980s and 2010s, and reached 2.61 million ha in 2010s. Of which, 0.72 million ha （27.6%） and 1.89 million ha （72.4%） LPs distributed in slopes less than 5° and greater than 5°, respectively. Of the LPs （72.4%） in slopes greater than 5°, 48.7 and 23.7% located in downslope （LPs locating at the down slope of adjacent secondary forests in the same aspect） and upslope （LPs locating at the up slope of adjacent secondary forests in the same aspect）, respectively; 0.10 million ha （3.8%） located in slopes greater than 25°. The LPs were divided into Sub-Regions-I, II, III according to slopes. For Sub-region-I （top role is to produce timber）, self-fertilizing shrub species can be intro- duced after clean cutting for young-aged LPs, and release thinning can be applied for middle-aged LPs, fast growth thinning for near-matured LPs, and clear cutting for matured LPs. For Sub-Region-II （the priority is to provide water conservation combined with timber production）, the LPs

关键词： larch plantation Natural larch forest Visualinterpretation. Slope position Ecosystem services

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Contrasting effects of N addition on the N and P status of understory vegetation in plantations of sapling and mature Larix principis-rupprechtii

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Journal of Plant Ecology 2018年第6期11卷 843-852页

作者： Tao Yan Tiantian Qu Huanhuan Song Philippe Ciais Shilong Piao Zhenzhong Sun Hui Zeng Sino-French Institute for Earth System Science College of Urban and Environmental SciencesPeking University5 Yiheyuan RoadHaidian DistrictBeijing 100871China School of Urban Planning and Design Peking University2199 Lishui RoadNanshan DistrictShenzhen 518055China Institute of Applied Ecology Chinese Academy of Sciences72 Wenhua RoadShenhe DistrictShenyang 110016China Laboratoire des Sciences du Climat et de l’Environnement UMR 1572 CEA-CNRS-UVSQ91191 Gif-sur-YvetteFrance Key Laboratory of Alpine Ecology and Biodiversity Institute of Tibetan Plateau ResearchChinese Academy of Sciences16 Lincui RoadChaoyang DistrictBeijing 100085China Center for Excellence in Tibetan Earth Science Chinese Academy of Sciences16 Lincui RoadChaoyang DistrictBeijing 100085China

Aims The productivity of forest plantations in temperate areas is often lim-ited by nitrogen(N),but may shift towards phosphorus(P)limitation with increasing atmospheric N deposition.Nutrient resorption is a nutrient conservation strategy in plants.Although data on nutrient resorption are available for overstory trees,there are few data for understory vegetation.Methods We examined leaf N and P concentrations and N and P resorption efficiencies(NRE and PRE,respectively)in eight understory species in 11-and 45-year-old Larix principis-rupprechtii stands subjected to N supplementation over a 3-year period.Important findings Leaf N concentrations and N:P ratios increased and P concentrations decreased,with N input in species within the 45-year-old stand,but not in the 11-year-old stand.NRE and PRE were not altered by N input in any of the species in either stand,but N resorption pro-ficiency decreased and P resorption proficiency increased,in the species in the 45-year-old stand.Thus,the growth of understory species may be more P-limited in the 45-versus 11-year-old stand,and nutrient resorption proficiency was more sensitive to N add-ition than nutrient resorption efficiency.These results will improve the understanding of nutrient use strategies and their responses to N addition in understory vegetation.The contrasting effects of N addition on nutrient status between stand ages cannot be ignored when modeling ecosystem nutrient cycling under global N depos-ition conditions.

关键词： larch plantation N addition nutrient resorption stand age understory species

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Soil Nitrogen Status of larch plantations in Comparison with SecondaryBroad-leaved Forest

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Journal of Forestry Research 1998年第1期9卷 13-15页

作者：崔晓阳郑国庆

Soils were collected from.three neighboring forest sites: 36-year-old larch plantation, 11-year-old larch plantation, and natural secondary broad-leaved forest (as control). Soil pH, total C. totaI N, C/N ratio. and available N (NO3-N and NH4-N) were measured. Laboratory incubations of soil samples were conducted during a 50 days period for the measurement of nitrogen mineralization rate and nitrification potenial. The results proved a degeneration in soil nitrogen status with stand age of larch plantations, which implicated one important aspect of soil degradation when natural forest was replaced by coniferous plantations.

关键词： larch plantation Secondary broad-leaved Forest Soil Nitrogen

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Effects of the second-generation larch plantations onsoil fertility and tree growth

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Journal of Forestry Research 2000年第1期11卷 41-43页

作者：王培华席苏桦姜文娟刘亚彬孙玉英伊春林业学校黑龙江伊春桦南林业局黑龙江桦南黑龙江省嫩江农场黑龙江嫩江黑龙江省第一林业调查规划设计院黑龙江牡丹江

In order to realize the effect of second generation of larch plantations on soil fertility and tree growth and to provide the theoretical base and the reasonable management measures, the growth of larch plantations for different generations at different soil conditions were inventoried and compared. The relationship between soil nutrition and tree growth of the second-generation larch plantations was analyzed. Comparing with the first generation, the second generation of larch did not present acidation phenomenon on the dark brown soil. With respect to the organic matter, rapidly available K and N, the values of the second-generation larch is close to that of first generation at later time. Platform-preparation is good measures for improving soil conditions

关键词： larch plantation Second generation Soil fertility Growth Standing trees

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Succession of Soil Acidity Quality and its Influence on Soil Phosphorus Types

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Chinese Forestry Science and Technology 2004年第4期 21-33页

作者： DUAN Wenbiao CHEN LixinCollege of Forestry, Northeast Forestry University, 150040 Harbin, P.R.China

Succession rules of soil acidity quality of larch plantations in first rotation at different development stages, succession rules of soil acidity quality of young stand of larch plantations in second rotation and the relationship between soil acidity and various forms of organic phosphorus and inorganic phosphorus were studied in mountainous area of eastern part of Northeastern China. The results showed that active acidity (pH value) inrhizosphere soil decreased continually with stand age increasing from young stand, half-mature stand, near mature stand to mature stand, but active acidity (pH value) in non-rhizosphere soil, exchange acidity, exchangeable aluminium, total hydrolytic acidity, and the ratio of exchange acidity and total hydrolytic acidity in rhizosphere soil and in non-rhizosphere soil increased apparently; total organic P, moderately resistant organic P, and highly resistant organic P in soil decreased at all age stages in larch plantations when soil acidity added. For rhizosphere soil of

关键词： larch plantation soil acidity inorganic phosphorus organic phosphorus correlation

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