the loess hilly region 第1页

Soil water dynamic of Hippophae rhamnoides in Loess Hilly Region STUDY ON INTRODUCTION AND ACCLIMATIZATION OF FINE HERBAGEIN THE LOESS HILLY REGION Assessment of agricultural ecological security of the Zhifanggou Valley in the Loess Hilly Region over 70 years Heterogeneity of soil nutrients of cropland returning to forest on the loess hilly region Ecological-economic coupling process and sustainability for ecological rehabilitation of Xiannangou Catchment in the Loess Hilly Region