承德农业生态系统分析  

An Analysis of Agricultural Ecological System in Chengde

作　　者：孟宪峰[1] 张月丛[1] 

机构地区：[1]河北民族师范学院物理系,河北承德067000

出　　处：《承德民族师专学报》2011年第2期48-50,共3页Journal of Chengde Teachers College for Nationalities

摘　　要：承德市农业生态系统尚未摆脱传统农业模式,无偿利用的环境资源能值较高,经营粗放,生产效率不高,但生产潜力巨大。承德农业生态系统的表土损失率不高,比河北其它各市的土壤保持价值量都要大,这对于作为京津水源供应地和生态屏障地来说,则具有非常重要的意义。The agroecosystem of Chengde City has not gotten rid of the traditional agricultural model.Environmental resources emergy used freely is higher,and with extensive management and lower production efficiency,but productive potential is great.Loss of topsoil of Chengde agroecosystems is not high,but bigger in the soil conservation value than that of other cities of Hebei Province,which has very important significance for a water supplier to Beijing and Tianjin and ecological protective screen.

关 键 词：承德市 农业生态系统 措施 

分 类 号：S19[农业科学—农业基础科学]