1) valley along the Sanggan and the Yanghe rivers
桑干河洋河流域
2) Guanting reservoir drainage basin
洋河、桑干河流域
3) Sanggan River Watershed
桑干河流域
1.
Based on the data from the field,the patterns of dominant populations of wetland vegetation in Sanggan River watershed,Shanxi were studied by using v/m(dispersal index) ratio t-test,clump intensity,mean crowding,patchiness index,Green s index and the intensity index k of negative binomial distribution and the cause involved with the pattern was analyzed.
根据野外调查的样地资料,应用方差/均值比(扩散系数)的t检验、聚集指数、平均拥挤度、聚块性指数、Green指数和负二项分布的聚集强度等方法,研究了山西桑干河流域湿地植被优势种群的分布格局并分析格局形成的原因,并用相关分析比较了6个指数间的关系,结果表明:这些植物的分布格局皆属于聚集分布,但它们的聚集强度有差异。
4) main stream of the Sanggan River
桑干河干流
1.
According to the practical hydrographic characteristics of the main stream of the Sanggan River,a model of the ammonia nitrogen,COD and volatile hydroxybenzene environmental capacity of the Sanggan River was established,and with which the different flow frequencies were calculated and analyzed.
依据水环境功能区划分原则及技术方法对山西桑干河干流地面水域的功能区进行了划分。
5) Yanghe watershed
洋河流域
1.
According to rainfall characteristics of Yanghe watershed in recent years,the phosphorus export by surface runoff from gentle slope was studied under simulated rainfall and analyzed rainfall data conditions.
根据洋河流域多年的降雨特点,通过对天然降雨资料分析和人工模拟降雨,对该流域缓坡地表径流中磷素输出进行了初步的研究,结果表明:洋河流域缓坡地土壤磷素流失以颗粒态磷为主,不同土地利用方式下洋河流域缓坡地地表径流中不同形态磷含量的大小顺序为:小麦-玉米连作地>高产玉米地>低产玉米地>次生灌木林地;随着降雨强度的增加,径流中颗粒态磷的含量逐渐增加,但Ortho-P的含量却下降;不同植被覆盖度下坡面地表径流中颗粒态磷和TP的含量,随着植被覆盖度增大而减少,但径流中Ortho-P的含量则随着覆盖度的增加而增加。
2.
At dry-slope farmland of the Yanghe watershed, Qinhuangdao city, 31 top layer soil samples (0~30 cm) were taken in a regular grid of 5 m by 5 m to study the relation of soil phosphours and water eutrophication.
为深入研究土壤磷素含量与水体富营养化发生的关系,以秦皇岛洋河流域典型旱坡地为研究对象,采用网格法(5m×5m)采集表层(0～30cm)土壤样品31个,进行相关分析。
3.
Taken the Yanghe Watershed in Qinhuangdao City as a case, this articl.
本文以秦皇岛市洋河流域为例，研究流域现代景观格局特征。
6) Yang River valley
洋河流域
1.
The Analysis of Land Cover Change in Yang River Valley Based on the Remote Sensing Technique;
基于遥感技术的洋河流域土地覆被变化特征分析
2.
Analysis on Land Cover Changes of Yang River Valley between 1987 and 2000
1987～2000年洋河流域土地覆被变化特征分析
3.
Based on the remote sensing data and the other GIS data and thematic maps,etc in 2 periods of 1995 and 2000,the variations of land use/land cover in Yang River valley of Zhangjiakou in the 5 years were interpreted and analyzed by interactive visual interpretation and computer automatic classification.
以1995、2000年两期的遥感数据和其他GIS数据、专题图等为基础,利用交互式目视解译和计算机自动分类的方法,对张家口洋河流域5年来的土地利用/土地覆被变化进行了解译和分析。
补充资料：洋河镇
中国名酒"洋河大曲"产地。位于江苏省泗阳县西北部，废黄河南岸。80年代曲酒年产量达万吨以上。人口2.3万。徐淮公路经此。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条