An B.Y., Wang D., Liu X.J., Guan H.M., Wei H.X., Ren Z.B., 2019. The effect of environmental factors in urban forests on blood pressure and heart rate in university students. J For Res 24:27-34. DOI: 10.1080/13416979.2018.1540144

Capers R.S., Chazdon R.L., 2004. Rapid assessment of understory light availability in a wet tropical forest. Agric For Meteorol 123:177-185. DOI: 10.1016/j.agrformet.2003.12.009

Chandler J.L., 2017. A slow opportunist: physiological and growth responses of an obligate understory plant to patch cut harvesting. Oecologia 183:677-687. DOI: 10.1007/s00442-017-3808-5

Combes D., Sinoquet H., Varlet-Grancher C., 2000. Preliminary measurement and simulation of the spatial distribution of the Morphogenetically Active Radiation (MAR) within isolated tree canopy. Ann For Sci 57:497-511. DOI: 10.1051/forest:2000137

Comeau P.G., Heineman J.L., 2003. Predicting understory light microclimate from stand parameters in young paper birch (Betula papyrifera Marsh.) stands. For Ecol Manage 180:303-315. DOI: 10.1016/S0378-1127(02)00581-9

Fan H.B., Wu J.P., Liu W.F., Yuan Y.H., Hu L., Cai Q.K., 2015. Linkages of plant and soil C:N:P stoichiometry and their relationships to forest growth in subtropical plantations. Plant Soil 392:127-138. DOI: 10.1007/s11104-015-2444-2

FAO, 1999. Towards a harmonized definition of non-wood forest products. Unasylva 50:1999/1993

Folta K.M., Maruhnich S.A., 2007. Green light: a signal to slow down or stop. J Exp Bot 58:3099-3111. DOI: 10.1093/jxb/erm130

Fournier A.R., Gosselin A., Proctor J.T.A., Gauthier L., Khanizadeh S., Dorais M., 2004. Relationship between understory light and growth of forest-grown american ginseng (Panax quinquefolius L.). J Am Soc Hortic Sci 129:425-432. DOI: 10.21273/JASHS.129.3.0425

Gao Z., Khalid M., Jan F., Saeed ur R., Jiang X., Yu X., 2019. Effects of light-regulation and intensity on the growth, physiological and biochemical properties of Aralia elata (miq.) seedlings. S Afr J Bot 121:456-462. DOI: 10.1016/j.sajb.2018.12.008

Grant R.H., 1997. Partitioning of biologically active radiation in plant canopies. International Journal of Biometeorology 40:26-40. DOI: 10.1007/BF02439408

Guo S., Wei H., Li J., Fan R., Xu M., Chen X., Wang Z., 2019. Geographical distribution and environmental correlates of eleutherosides and isofraxidin in Eleutherococcus senticosus from natural populations in forests at Northeast China. Forests 10:872. DOI: 10.3390/f10100872

Hertel C., Leuchner M., Menzel A., 2011. Vertical variability of spectral ratios in a mature mixed forest stand. Agric For Meteorol 151:1096-1105. DOI: 10.1016/j.agrformet.2011.03.013

Hertel C., Leuchner M., Rotzer T., Menzel A., 2012. Assessing stand structure of beech and spruce from measured spectral radiation properties and modeled leaf biomass parameters. Agric For Meteorol 165:82-91. DOI: 10.1016/j.agrformet.2012.06.008

Huett D.O., Gogel B.J., Meyers N.M., McConchie C.A., McFadyen L.M., Morris S.C., 2001. Leaf nitrogen and phosphorus levels in macadamias in response to canopy position and light exposure, their potential as leaf-based shading indicators, and implications for diagnostic leaf sampling protocols. Aust J Agric Res 52:513-522. DOI: 10.1071/AR00066

Ke S.F., Qiao D., Zhang X.X., Feng Q.Y., 2019. Changes of China's forestry and forest products industry over the past 40 years and challenges lying ahead. Forest Policy Econ 106:101949. DOI: 10.1016/j.forpol.2019.101949

Kume A., Nasahara K.N., Nagai S., Muraoka H., 2011. The ratio of transmitted near-infrared radiation to photosynthetically active radiation (PAR) increases in proportion to the adsorbed PAR in the canopy. J Plant Res 124:99-106. DOI: 10.1007/s10265-010-0346-1

Leonardos N., Geider R.J., 2004. Responses of elemental and biochemical composition of Chaetoceros muelleri to growth under varying light and nitrate: phosphate supply ratios and their influence on critical N : P. Limnol Oceanogr 49:2105-2114. DOI: 10.4319/lo.2004.49.6.2105

Lewis S.L., Tanner E.V.J., 2000. Effects of above- and belowground competition on growth and survival of rain forest tree seedlings. Ecology 81:2525-2538. DOI: 10.1890/0012-9658(2000)081[2525:EOAABC]2.0.CO;2

Li X.W., Chen Q.X., Lei H.Q., Wang J.W., Yang S., Wei H.X., 2018. Nutrient uptake and utilization by Fragrant rosewood (Dalbergia odorifera) seedlings cultured with oligosaccharide addition under different lighting spectra. Forests 9:15. DOI: 10.3390/f9010029

Ma L., Xue N., Fu X.Y., Zhang H.S., Li G., 2017. Arabidopsis thaliana FAR-RED ELONGATED HYPOCOTYLS3 (FHY3) and FAR-RED-IMPAIRED RESPONSE1 (FAR1) modulate starch synthesis in response to light and sugar. New Phytol 213:1682-1696. DOI: 10.1111/nph.14300

Nadeau I., Olivier A., 2003. The biology and forest cultivation of American ginseng (Panax quinquefolius L.) in Canada. Can J Plant Sci 83:877-891. DOI: 10.4141/P02-092

Nunez H.R., de Gouvenain R.C., 2015. Seasonal variation in understory light near a gap edge and its association with conifer seedling survival in a Southern New England forest. Northeast Nat 22:613-629. DOI: 10.1656/045.022.0315

Ou Z.Y., Cao J.Z., Shen W.H., Tan Y.B., He Q.F., Peng Y.H., 2015. Understory flora in relation to canopy structure, soil nutrients, and gap light regime: a case study in Southern China. Pol J Environ Stud 24:2559-2568. DOI: 10.15244/pjoes/59238

Parker W.C., 2014. The relationship of stand structure with canopy transmittance: Simple models and practical methods for managing understory light conditions in eastern white pine (Pinus strobus L.)-dominated forests. For Chron 90:489-497. DOI: 10.5558/tfc2014-099

Rose C.D., Durako M.J., 1994. Induced photomorphogensis by an altered R-FR light ratio in Axenic ruppia-maritima L. Bot Marina 37:531-535. DOI: 10.1515/botm.1994.37.6.531

Scowcroft T.G., Haraguchi J.E., Fujii D.A., 2008. Understory structure in a 23-year-old Acacia koa forest and 2-year growth responses to silvicultural treatments. For Ecol Manage 255:1604-1617. DOI: 10.1016/j.foreco.2007.11.019

Sonohat G., Balandier P., Ruchaud F., 2004. Predicting solar radiation transmittance in the understory of even-aged coniferous stands in temperate forests. Ann For Sci 61:629-641. DOI: 10.1051/forest:2004061 DOI: 10.1051/forest:2004061

Sottile G.D., Meretta P.E., Tonello M.S., Bianchi M.M., Mancini M.V., 2015. Disturbance induced changes in species and functional diversity in southern Patagonian forest-steppe ecotone. For Ecol Manage 353:77-86. DOI: 10.1016/j.foreco.2015.05.025

State Forestry Administration of China (2019) Building an ecological civilization and creating a beautiful country. Greentimes. http://www.forestry.gov.cn/main/1065/20190125/173240086175742.html. Accessed 25 January 2019

Wang W. et al., 2019. Eclalbasaponin I causes mitophagy to repress oxidative stress-induced apoptosis via activation of p38 and ERK in SH-SY5Y cells. Free Radic Res 53:655-668. DOI: 10.1080/10715762.2019.1620937

Wang W.J., Zhan B., Xiao L., Zhou W., Wang H.M., He X.Y., 2018. Decoupling forest characteristics and background conditions to explain urban-rural variations of multiple microclimate regulation from urban trees. PeerJ 6:25. DOI: 10.7717/peerj.5450

Wei H.X., Xu C.Y., Ma L.Y., Duan J., Jiang L.N., Ren J., 2014. Effect of late-season fertilization on nutrient reserves and carbohdyrate accumulation in bareroot Larix olgensis seedlings. J Plant Nutr 37:279-293. DOI: 10.1080/01904167.2013.859697

Wei H.X., Zhao H.T., Chen X., 2019. Foliar N:P stoichiometry in Aralia elata distributed on different slope degrees. Not Bot Horti Agrobo 47:887-895. DOI: 10.15835/nbha47311390

Yagi K. et al., 1994. Stimulatory effect of red light on starch accumulation in a marine green alga,chlamydomonas sp. strain MGA161. Appl Biochem Biotechnol 45-6:225-232. DOI: 10.1007/BF02941801

Zhao J. et al., 2019. Nutrient uptake and utilization in Prince Rupprecht's larch (Larix principis-rupprechtii Mayr.) seedlings exposed to a combination of light-emitting diode spectra and exponential fertilization. Soil Sci Plant Nutr 65:358-368. DOI: 10.1080/00380768.2019.1631715

Zheng L., Ceusters J., Van Labeke M.C., 2019. Light quality affects light harvesting and carbon sequestration during the diel cycle of crassulacean acid metabolism in Phalaenopsis. Photosynth Res 141:195-207. DOI: 10.1007/s11120-019-00620-1

Zhou W., Zhao L.B., Yuan H.Y., Xu L., Tan W.H., Song Y.M., Fang X.H., 2019. A new small cell lung cancer biomarker identified by Cell-SELEX generated aptamers. Exp Cell Res 382:8. DOI: 10.1016/j.yexcr.2019.06.023