【摘 要】
：
Land-use type under different topographic conditions and human activities affects soil development. We investigated the effects of land-use,topography and human activity on soil classification changes
【出 处】
：
Journal of Mountain Science
论文部分内容阅读
Land-use type under different topographic conditions and human activities affects soil development. We investigated the effects of land-use,topography and human activity on soil classification changes in the Toshan watershed in northern Iran.Seven repr
其他文献
为了解决农资消费者和农资企业管理者对农资服务网点地理位置不易获取和农资信息匮乏的问题,采用了在百度地图API的基础上设计并实现农资服务网点电子地图系统的方法。首先对开放式地图API的特点、功能进行了总结,提出了基于地图API的电子地图服务技术框架;然后根据需求分析和可行性分析确定了系统功能模块的整体设计框图;最后详细介绍了各个模块的功能设计和实现。该电子地图系统实现了农资服务网点信息在线浏览、检索
为了提高船舶设计过程中舱室建模的效率,提出了一种基于CAD(计算机辅助设计)模型的舱室识别算法.利用图形学中的面和半边结构,建立了全船水密板架面的相邻、相交关系,并提出了边界面优先搜索原则,实现对全船封闭舱室空间边界面的自动识别;另外,通过建立外壳结构的包容盒,实现了对指向void空间的边界面分组的剔除.在NX11.0平台上以C++语言对算法进行编程实现,并以多种实际船舶模型为例做测试.测试结果表
Terrain plays a key role in landscape pattern formation, particularly in the transition zones from mountains to plains.Exploring the relationships between terrain characteristics and landscape types i
Dear Editor,Litterfall represents a major pathway of carbon and mineral transfer from vegetation to soils,and thus is an important ecological process in carbon and nutrient cycling.Annual litterfall p
Continuous increases in anthropogenic nitrogen(N) deposition are likely to change soil microbial properties, and ultimately to affect soil carbon(C) storage.Temperate plantation forests play key roles
SRTM数据是研究冰量变化的重要数据之一。基于SRTM C-波段和X-波段的高程数据,对高亚洲不同冰川区SRTM C-波段数据的透射深度进行了研究。结果表明:高亚洲地区SRTMC透射深度的空间分布特征存在较大差异,其中藏色岗日地区的透射深度最大为(5.3±2.1)m,中天山和念青唐古拉西段地区的透射深度最小仅为(0.8±0.6)m。透射深度整体空间分布呈由高亚洲边缘地区向青藏高原内陆先减小后增大,
Suaeda salsa is an important local species in the intertidal beach of the Western Pacific coast. However,under the artificial cofferdam and Spartina alterniflora expansion,Suaeda marsh has degraded se
随着全球气候变化和人类活动的不断加剧,导致生态、资源与环境问题日趋严重,区域空间格局变化与地表温度的研究已成为全球环境变化的热门和重点研究课题。采用2000年、2006年和2010年的TM遥感影像,结合GIS和RS技术研究南京市不同时期的时空分布特征、演变特征以及地表温度的变化。结果表明:2000~2010年南京市城区建设用地面积增长幅度较大,而耕地面积却呈显著递减趋向,水体和草地面积基本保持稳定
Southern Bangladeshs irrigation and drinking water is threatened by saline intrusion. This study aimed to establish an irrigation water quality index(IWQI) using a geostatistical model and multivariat
This study deals with the analysis of the glacial processes that have affected the relief of Mt Chelmos in northern Peloponnesus, Greece during middle and Late Pleistocene. The goal was to compile a c