Microbial communities and residues in robinia- and poplar-based alley-cropping systems under organic and integrated management

摘要: Organic farming and agroforestry are considered as sustainable alternative agricultural practices for intensive agriculture. In a long-term field trial in Scheyern Germany, we evaluated the effects of 21-year organic 4-year (robinia poplar) on microbial community residues. Microbial biomass were determined by fumigation–extraction method analysis phospholipid fatty acid (PLFA), respectively. residues measurement amino sugars. The results showed that had significantly positive effect soil carbon (SOC) but it tended to decrease C (MBC), PLFA functional guilds, muramic (MurN), glucosamine (GlcN). Robinia system, however, increased SOC potential enhance MBC, guilds especially Gram (+), MurN GlcN, comparison with poplar system. hedgerow tree did not show properties except abundance fungi (+) bacterial, after establishment period. principal component profile other investigated treatments, robinia system under different structure. It also indicated species-specific was stronger than integrated farming. summary, short-term introduction trees into an existing will substantially change biomass, has certain influence specific groups hedgerow. Although overall indices, still see its additive current study. We expect alley-cropping combines great sequestering developing agroecosystems time.