壁山

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 。