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1.
IntroductionBal11booisl11ainfoodoftl1cgial1tpal1daint`.ildal1dman-fedgiantpandattasfCd111ucl1bal11boobcsldcsconccntratestl1atx`erel11adcofgrainPOwdcrtokccpltsfeedingl1abitsinwiId,buttl1cdigestivcratcofcoarsccclluloseisvery'low,il1botl1ttilda11d111a11-fcdpa11das.Wecanfindthattl1eba111boot'asall11ostl1otdigcstcdfrolllthefCccsthatcol1tai11edl11ucI1bal11boosticks.CI1cl1Yucllulletc.(l993)rcPortedt1lattl1edigcstit'eratcil1bal11boocoarsecelluloscisabout25%ol1lv.Tl1cautl1orsdesiglledthiscxPCrilll… 相似文献
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IntroductionSchiSandraisadeciduousvineofMopohaceae.ItsthetStaSteofsWed,sour,bitter,PepPeryandsalty.ItisoneOfthetfadihonalChineseherbalmedicine.Schisan-for(Mopohaceae)hasbeenusedasprecioustonicandastriopntdrugforalleviahngcoughsinceanc1enthme.Modemmedicine… 相似文献
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Kisito Gandji Valère K Salako Achille E Assogbadjo Vincent OA Orekan Romain L Glèlè Kakaï Brice A Sinsin 《Southern Forests》2017,79(2):133-142
This study assessed ecological and socio-economic impacts of a participatory forest management project in the Republic of Benin. The study focused on the Wari-Maro Forest Reserve and the ‘Projet d’Aménagement des Massifs Forestiers’ five years after its completion. A forest inventory was carried out using 37 square plots of 729 m2 each to characterise the population structure of two types of plantations established: plantations with exotic species and plantations with native species. In addition, individual surveys were conducted with local households, organs of joint forest management and forestry officers to evaluate their perceptions about the participatory management of the plantations. Finally, the sustainability of the participatory management was assessed with an established rating system. Results showed that plantations with exotic species were more successful than plantations with native species. Local communities argued that they have not been involved in the plantations design but only in the implementation step and that their standards of living have decreased after the project completion. The rating system used showed that the participatory management of plantations had a short-term sustainability. The findings suggest that future projects should be designed and implemented with better participation of local communities as full partners. 相似文献
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《中国林业科技(英文版)》2010,(4):9-18
The study made a monetized valuation of eco-service provided by forests at Saihanba Mechanic Forest Farm in terms of water conservancy, soil conversation, carbon sequestration, micro-climate adjustment, air quality improvement, protection for agriculture, biodiversity maintenance, and landscape recreation. The results revealed that the total value of various eco-services is 3.061 billion yuan/a, while the eco-services of unit area forest values at 42 300 yuan/(ha·a). 相似文献
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A Study of Collecting Robot of Conifer Cone 总被引：1，自引：0，他引：1
IntroductionIntheforeStp~tion,thecollectionofconifcrconeisalmpsadifficultProblem.AlthoughmanykindsofconecoleCtinmachinehavebeenresearchedandmanufac-~athomeandabroad,forexample,elevator,vibra-tionmachineoftrdetrunkandsoon.ThesemachincshavcnotbeenaPPliedwid… 相似文献
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LIU Huifang* WEI Tianxing ZHU QingkeSoil Water Conservation Combat Desertification Laboratory Beijing Forestry University Beijing P.R.China 《中国林业科技(英文版)》2004,3(2):71-76
1 INTRODUCTIONThe Loess Plateau is the most drastic soil erosion regionin China, with the most severe water erosion. Thedistribution of types and intensity of erosion not onlyhave regional diversity but also have perpendicularvariation. In the small watershed, there are differencesin erosion characters among its upper, middle and lowerreaches. It is very significant for taking rationalmeasures of soil and water conservation and forpreventing soil and water loss to analyze the relationbe… 相似文献
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LIN Lanying FU Feng Research Institute of Wood Industry Chinese Academy of Forestry Beijing China 《中国林业科技(英文版)》2007,6(3):17-25
Resonance flexural vibration（Fast Fourier Transform, FFT）, ultrasonic wave（Pundit） and stress wave（Metriguard） techniques were examined as means of evaluating the static modulus of elasticity （MOE） and predicting the modulus of rupture （MOR） of finger-jointed lumber specimens made with four kinds of Eucalyptus （Eucalyptus. citriodora, E. exserta, E. grandis x E. urophylla and E. grandis）. Dynamic MOE was calculated from frequency and time obtained from forced vibrations and sounds induced in the four species of finger-jointed specimens. It was found that correlation coefficients between density and static MOE and dynamic MOE were statistically significant at the 0.01 level. And it was also found that the three nondestructive techniques can provide rapid and accurate means to determine the MOE, and the dynamic MOE was more accurate to predict static MOE than density. But the correlation coefficient between dynamic MOE, static MOE and MOR were lower than results reported by other researchers for solid wood, and were not statistically significant. It can be concluded that the three nondestructive techniques are useful for evaluating the MOE, but not suitable for predicting the MOR of finger-jointed. 相似文献
8.
Ultrasound-associated extraction of seed oil of Korean pine 总被引：8，自引：1，他引：8
ZHANGYing WANGZhen-yu CHENXiao-qiang 《林业研究》2005,16(2):140-142
Experiment on ultrasound- associated extraction of seed oil of Korean pine (Pinus koraiensis) was conducted in Northeast Forestry University, Harbin, China. The factors affecting extraction yield, such as ultrasonic frequency, extracting temperature, extracting time and the ratio of material to liquid (ratio of Korean pine seed to absolute alcohol), were analyzed under specific condition and the optimal extracting parameters were obtained as the ultrasonic frequency 32 000 Hz, the extracting temperature 80℃, the extracting time 50 rain, and the ratio of material to liquid 1: 30. The study demonstrates that ultrasound is a reliable and great efficiency tool for the fast extraction of Korean pine seed oil。 相似文献
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Simulation of Landscape Pattern of Old Growth Forests of Korean Pine By Block Kriging 总被引：1，自引：0，他引：1
IntroductionLandscapecanbeconsideredaspatiaI1yheterogeneousarea,andspatialpatter11referstothearra11gementofstructurall1eterogeneityofenvironments,resourceandbiologicalsysteInsinspace(Formanetall986,Tur11erl987,l989-Risserl987,TurneretaI199l).Turner(1987,1… 相似文献
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《林业研究》1994,(2)
GeneralInf0rmati0nLaoshanExperimentalStationofPlantation,knownasakeyexperimentalbaseofplantationofNortheastForestryUniversity,wasestablishedinl958.ItislocatedonShangzhiCountyof'HeilonaiiangProvince,45"20,-45"25'in1atitudeand'l27o30,-l27o34'inlongitude.Themeanelevationisabout300In-ThehighestpeaknamedMaoershanis800minelevationralativeheight.Thes1opeinthisregionrangesfroml0"to15",andtheterrainisachainofundu1atedhills.Vegctati0nThezonalvegetationofthisregionisbroadleavedandkoreanpinemixedfO… 相似文献
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Hu Jian-zhong Guo Xiao-feng 《中国林学(英文版)》2006,8(1):50-52
Five minerals or elements, crude protein, lysine, methionine cystine, calcium and phosphorus, were selected for evaluation of the food value of seabuckthorn (Hippophae rhamnoides ssp. sinensis) using the method of "food analysis". The decision values (δi) of seabuckthorn seeds, leaves and fruit residues rank in the fifth, sixth and ninth position among the 16 types of fodder. Seeds, leaves and fruit residues of seabuckthorn are suitable for livestock and poultry fodder. The weights of livestock and poultry are considerably increased after feeding with seabuckthorn. The development of seabuckthorn should have great potentials as food, pre-food and food additives for livestock and poultry in north China. Processing facilities should pay more attention to seabuckthorn food development methods and strategies and the seabuckthorn fodder industry should be promoted. 相似文献
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《林业研究》1998,(1)
DearcolleagueScientificperiodicalisamainkindofmediumforpublishingscientificresearchresutts.Aboutseventypercentofresearchresultsarepublishedindifferentformsofperiodicals.Thereareabout260kindsofforestryjournalsinChina.Thesejournalsareplayinganimportantroleinadvancingacademicexchangesandflourishingforestryresearch.Mostofthesejoumals,however,arepublishedinChinese,somewithEnglishabstracts,veryfewpublishedinEnglish.SothescopeofacademicexchangesofforestryresearchislimitedinChina.NortheastForestry… 相似文献
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IntroductionDiOscoreaniPpniCaMakisanimportanttraditionalChinesemedicinaImaterialwithsignificanteconomicvalue.Inrecentyears,asimpactofresourcesex-ploitationagainstD.niPpnbe,itspopulationdistribu-tionandamountofgrowingstockhavedecreasedconstantlyAsaresuIt,thisspecieshasbeenlistedatnationaIsecondrankpreservepIants(Xie1995).Itisurgenttosurveytheresourcesandstudyitsendan-geredmechanismofD.'ntoPniCa.Speciessurvivalrelayonreproduction,andeveryspecieshasaspecialreproductivestrategylnad-vancedpl… 相似文献
15.
Bioevolution is still a main puzzle and attracts many scientists to research on it. Here I present that organisms have two important properties, definite structure and self-reproduction. Based on the number and connection of the structural units, organisms can be divided into three groups, unicellular, particellular and polycellular organisms. It can be called polycellular evolution that organisms evolve from unicellular, particellular to polycellular. Also it can be called diploid evolution that organisms evolve from haplobes to diplobes, two groups based on the reproductive differences. Some concepts like spore, zygote and embryos are redefined in the paper. Moreover, I present that embryos are the most important boundary of bioevolution and organisms can be divided into two evolutionary phases, the lower and the higher. The lower organisms, Kingdom Microbia (kingd. nov.), are inembryonate, which include Acytophyla (phyl. nov.), bacteria, protozoa,fungi and inembryonate algae. The higher organisms are embryonate and have two branches, Kingdom Plantae and Kingdom Animalia.Plantae are sessile and, autotrophic or sporogenic, which include higher plants and Nudembryophyta (phyl. nov.). Animalia are heterotrophic and, motile or gametogenic, which include all multicellular animals. The new system, which reflects the two important phases of bioevolution and two branches of higher organisms, can really correct the problem of different kingdoms in different researches or by different researchers. 相似文献
16.
Length of cuttings in establishment and production of short-rotation plantations of Salix ‘Aquatica’
The effect of length of cuttings, 10 to 50 cm long, on establishment and productivity of short-rotation plantations was investigated in five trials, for periods of 2 to 9 years. The trials were established on abandoned agricultural fields planted with unrooted Salix Aquatica cuttings. The effect of cutting length was very similar in all five trials: the longer the cuttings (up to 30–50 cm), the better the survival and growth. In most trials the greatest difference in survival was between cutting lengths of 10 and 20 cm, especially in unfavorable growing conditions. In an annually harvested trial during the 9-year test period, a cutting length up to 30 cm affected biomass production per stool positively. In two trials grown with 5-year rotation, the longest cuttings produced 7 times the above-ground biomass of the shortest ones. Results of these trials also emphasize the importance of establishment for the future success of willow plantations. 相似文献
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This paper, from the development of Chinese economy and forest resources as well as the fast-growing and high-yield timber plantation development program and harvesting policies of plantation, analyses the Eucalypt planting, processing, utilization and developing prospect in tropical area. 相似文献
20.
GONGMingqin CHEN Yu WANG Fengzhen CHEN YinglongResearch Institute of Tropical Forestry. Chinese Academy of Forestry Guangzhou . China 《中国林业科技(英文版)》2002,(1)
Bacterial wilt caused by Pseudomonas solanacearum, is a very serious disease of Eucalyptus in southern China, mainly in Guangdong, Hainan and Guangxi provinces. It causes the death of seedlings and young trees and the mortality may exceed 90 percent in some sites. Susceptible species include E. grandis, E. urophylla, hybrids between the two and E. citriodora. In nursery and field trials with E. urophylla and field trial with E. grandis x E. urophylla inoculation of ectomycorrhizal fungi was found to reduce the incidence of the disease. Some fungal isolates were more effective than others. 相似文献