Nyfeler D,Huguenin-Elie O,Suter M,Frossard E,Lüscher A.Grass-legume mixtures can yield more nitrogen than legume pure stands due to mutual stimulation of nitrogen uptake from symbiotic and non-symbiotic sources.Agriculture Ecosystems & Environment,2011,140(1):155-163.
Ghosh P K.Growth,yield,competition and economics of groundnut/cereal fodder intercropping systems in the semi-arid tropics of India.Field Crops Research,2004,88:227-237.
Jiao J Y,Tzanopoulos J,Xofis P,Bai W J,Ma X H,Mitchley J.Can the study of natural vegetation succession assist in the control of soil erosion on abandoned croplands on the Loess Plateau,China.Restoration Ecology,2007,15(3):391-399.
Li L,Sun J H,Zhang F S,Guo T W,Bao X G,Smith F A,Smith S E.Root distribution and interactions between intercropped species.Oecologia,2006,147:280-290.
[14]
Xu B C,Xu W Z,Huang J,Shan L,Li F M.Biomass production and relative competitiveness of a C3 legume and a C4 grass co-dominant in the semiarid Loess Plateau of China.Plant and Soil,2011,347:25-39.
[15]
Xu B C,Xu W Z,Huang J,Shan L,Li F M.Biomass allocation,relative competitive ability and water use efficiency of two dominant species in semiarid Loess Plateau under water stress.Plant Science,2011,181:644-651.
[16]
Zhang Z H,Duan J C,Wang S P,Luo C Y,Zhu X X,Xu B,Chang X F,Cui S J.Effects of seeding ratios and nitrogen fertilizer on ecosystem respiration of common vetch and oat on the Tibetan Plateau.Plant and Soil,2013,362:287-299.
[17]
Liebig M A,Doran J W,Gardner J C.Evaluation of a field test kit for measuring selected soil quality indicators.Agronomy Journal,1996,88(4):683-686.
[18]
Jolliffe P A.The replacement series.Journal of Ecology,2000,88(3):371-385.
Singh J S,Gupta S R.Plant decomposition and soil respiration in terrestrial ecosystems.The Botanical Review,1977,43:449-528.
[24]
Hanson P J,Edwards N T,Garten C T,Andrews J A.Separating root and soil microbial contributions to soil respiration:A review of methods and observations.Biogeochemistry,2000,48(1):115-146.
Loveys B R,Atkinson L J,Sherlock D J,Roberts R L,Fitter A H,Atkin O K.Thermal acclimation of leaf and root respiration:An investigation comparing inherently fast- and slow-growing plant species.Global Change Biology,2003,9(6):895-910.
Biasi C,Rusalimova O,Meyer H,Kaiser C,Wanek W,Barsukov P,Junger H,Richter A.Temperature-dependent shift from labile to recalcitrant carbon sources of arctic heterotrophs.Rapid Communications in Mass Spectrometry,2005,19(11):1401-1408.