壁山
![壁山](../cache/1347090.jpg)
-
壁山县农田生态系统中氮肥利用与平衡的研究
N Balance in Agroecosystem of Bishan County after Applying Nitrogenous Fertilizers
-
生态敏感性评价研究。通过对壁山县土壤侵蚀状况的分析,并结合影响生态敏感性的其他生态因子,构建生态敏感性评价指标体系,在划分评价单元的基础上,采用定性分析和
The study on eco-environment sensitivity estimation : By analyzing soil erosion of Bishan
-
特大城市城乡结合部县乡级土地利用总体规划探讨&以重庆市壁山县为例
Probing into the General Land Use Planning of Urban Fringe Area of Megalopolis
-
壁山县生态修复过程中的土壤侵蚀与土壤养分动态研究
Study on soil erosion and soil nutrient during the process of ecological restoration in Bishan county
-
研究结果表明:(1)壁山县土地利用以生产性用地坡耕地、水田为主,具有一定有林地面积分布,其余土地利用类型面积相对极少,景观优势度指数较大;
The results showed that : ( 1 ) In Bishan County , sloping fields and paddy fields were the main land-use types , and forests had a little distribution , while the areas of other land-use types were relatively small .
-
水流沿着火星表面的火山口壁和山壑流淌而留下的痕迹,又一次将“火星上是不是有生命存在”这一问题抛了出来。
Water trickles down gullies and crater walls on the surface of Mars , raising intriguing questions about whether life could exist on the red planet 。