Agro-forestry ecosystem 第1页

Functions and assessment methods of protecting soil fertility of agro-forestry ecosystems The assessment method for gas regulation function of an agro-forestry ecosystem Carbon storage of poplar-crop ecosystem in Eastern Henan Plain. CYCLES OF NITROGEN, PHOSPHORUS AND KALIUM AS THE NUTRIENT ELEMENTS IN AN AGRO-FORESTRY ECOSYSTEM OF THE POPU-LUS/EURAMERICANA-TRITICUM SATIVUM -ZEA MAYS COMMUNITY-TYPE 0ptimal models of agro-forestry ecosystem—A case study from Raoyang County of Hebei Province Agro-forestry ecosystem and sustainable development of agriculture in Karst regious-Taking Zerong Village of Xingyi City of Guizhou Province as an example