the social and economic sustainable development in the arid and semiarid area in china has been restricted by sandy desertification heavily.
沙漠化是制约我国干旱、半干旱地区社会经济可持续发展的重要因素。
the dynamic relationship between the biomass of switchgrass and the soil water content in arid and semiarid area was investigated in this paper.
通过在黄土高原半干旱地区种植柳枝稷,构建生物量与土壤水分的动力学关系模型。
arid and semiarid area has great potentiality in agricultural economic development in china, but it's ecological environment is so fragile that it has been destroyed to some degree.
干旱半干旱区是当前我国农业经济发展最有潜力的地区。可是,该区生态环境脆弱,并受到一定程度的破坏。
soil erosion by wind is a major cause of farmland degradation in arid and semiarid area of north china.
土壤风蚀是中国北方干旱半干旱地区农田土地退化的重要原因。