检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
机构地区:[1]中国科学院水利部水土保持研究所,陕西杨陵712100
出 处:《水土保持研究》2003年第4期51-53,116,共4页Research of Soil and Water Conservation
摘 要:依据笔者2002年6~8月三次到陕北的实地调查、访问和座谈结果,首先阐述了陕北生态环境建设的主要特点是:生态环境脆弱;基础设施程度低;人口素质不高;生产条件差且类型多;矛盾多且互相交叉.其次较详细介绍了五种比较典型的治理模式:吴旗县"封山禁牧、退耕还林(草)";米脂县"四个一工程";米脂县高西沟村的"三三制";安塞县纸坊沟的"水土保持型生态农业";榆林沟"坝系农业",并进行了初步分析。According to the results of field survey, investigation and discussion in the North of Shaanxi Province from June to August in 2002,the main characteristics of ecological and environmental construction in northern Shanxi Province are firstly reviewed, such as the fragile of ecological environment, the badness of basic establishment, the low level of population's quality, the poor and complex condition of the productivity and the incompatible contradiction. Secondly, five typical management modes are detailedly recommended and briefly analyzed, which include 'seeling the mountain pass,no grazing and turning cultivated land back into forests and grasslands'in Wuqi County,' Four Firsts Project' in Mizhi County,'threethreesystem' in Gaoxigou village, Mizhi County,'soil and water conservation ecological agriculture' in Zhifanggou, Ansai county and the 'damagriculture' in Yulingou.
分 类 号:X171.1[环境科学与工程—环境科学]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.222