1)normalized difference snow index(NDSI)雪盖指数
1.The most popular retrieval algorithms are derived mainly from regression techniques using the normalized difference snow index(NDSI),but these methods are in low precision where the snow fraction is near 1 or 0.目前较常用的积雪覆盖率算法主要是利用雪盖率与雪盖指数(NDSI)间的关系建立统一的回归模型,但这种方法在完全雪盖区及稀疏雪盖区的反演精度较差。
2)Normalized difference snow index雪盖指数法
3)Snowcover parameter雪盖参数
4)Snow depth index雪深指数
5)snow cover雪盖
1.Changes in contents of MDA and osmoregulatory substances during snow cover for Pyrola dahurica;兴安鹿蹄草(Pyrola dahurica (H.Andr.) Kom.)雪盖前后丙二醛及渗透调节物质含量的变化
2.Now it is possible tomonitor snow cover in the large area.融雪水在水资源利用中扮演着及其重要的角色 ,遥感技术的发展使得大面积监测雪盖成为可能 。
3.They also are significantly affected by local environmental factors such as vegetation,snow cover,sand cover,and surface water/moisture conditions.青藏高原冻土区地温既受海拔、纬度和经度(干燥度)区域地带性规律控制,同时它又受植被、雪盖、砂层、水被和地质构造等局地因素的显著影响。
英文短句/例句
1.mountains tipped with snow山顶被雪盖住的群山
2.The cars were snowed under by the drifts.车辆被积雪盖没了。
3.The mountain village was blanketed with snow整个山村都被雪盖住了。
4.CHANGES OF PROTECTIVE ENZYME ACTIVITY IN PYROLA DAHURICA BEFORE AND AFTER SNOW COVER IN NORTHEASTERN CHINA兴安鹿蹄草叶片雪盖初期与雪盖后期保护酶活性的变化规律
5.The ground was covered with snow.地面上覆盖着一层积雪。
6.The ground was salted with a fall of snow.一阵雪覆盖了地面。
7.hills with a mantle of snow覆盖着一层雪的山.
8.The ground was covered with thick snow.地上覆盖着厚厚的积雪。
9.The mountains are covered with thick snow.山上覆盖着厚厚的积雪。
10.Many areas have been blanketed with snow.许多地区被积雪覆盖。
11.It covered every tree;雪花覆盖了每一棵树；
12.It covered every housetop,雪花覆盖了每一个屋顶，
13.snow robing fields and gardens.unclothe白雪覆盖的田野和花园
14.White snows for ever rest on the mountain top.皑皑积雪终年覆盖山顶。
15.The tops of the mountains are covered with snow.山顶上覆盖着白雪。
16.A heavy fall of snow covered the ground.一场大雪覆盖了大地。
17.The mountain is perpetually covered with snow.这座山终年有积雪覆盖。
18.The road is all covered with snow.道路全都被大雪覆盖。
相关短句/例句
Normalized difference snow index雪盖指数法
3)Snowcover parameter雪盖参数
4)Snow depth index雪深指数
5)snow cover雪盖
1.Changes in contents of MDA and osmoregulatory substances during snow cover for Pyrola dahurica;兴安鹿蹄草(Pyrola dahurica (H.Andr.) Kom.)雪盖前后丙二醛及渗透调节物质含量的变化
2.Now it is possible tomonitor snow cover in the large area.融雪水在水资源利用中扮演着及其重要的角色 ,遥感技术的发展使得大面积监测雪盖成为可能 。
3.They also are significantly affected by local environmental factors such as vegetation,snow cover,sand cover,and surface water/moisture conditions.青藏高原冻土区地温既受海拔、纬度和经度(干燥度)区域地带性规律控制,同时它又受植被、雪盖、砂层、水被和地质构造等局地因素的显著影响。
6)snow-cover雪盖
1.This paper analyzes the spectral characteristics of six major land-surfaces such as desert,forest,grassland,plain,plateau,water-body and snow-cover measured from three most sensitive 23.0GHz通道中的光谱特性,提出了利用这3个通道监测中国新疆地区雪盖范围的方法,并得到了2001年10月到2002年3月新疆地区的旬雪盖图。
延伸阅读
迁移效率指数、偏好指数和差别指数迁移效率指数、偏好指数和差别指数 迁移效率指数、偏好指数和差别指数迁移效率指数是用于测定两地间人口迁移效率的指标。它是净迁移对总迁移之比。计算公式为:EIM一摇寿纂拼又‘。。上式中，}人么夕一材方}为i、]两地净迁移人数;从少+材户为i、]两地总迁移人数;El入了为迁移效率指数。 EIM的取值范围为。至100，如某一地区的值越大，反映迁移的的影响也越大。如果计算i地区与其他一切地区之间的人口迁移效率指数EIM厂，则: }艺材。一芝Mj、}EIM汀艺。+乏M，(j笋i) 迁移偏好指数是从一个地区向另一地区的实际迁移人数与期望迁移人数之比。计算公式为:____M.___材尸2行一:一二子一一不石一二，么M“ 了厂‘.厂‘、八 }二不十二六二1 、厂厂7上式中，M“为从i地迁到j地的实际迁移量;艺材。为总的人口迁移量;尸为总人口;M尸I，j为迁移偏好指数。通过计算迁移偏好指数，可以反映各地区的相对引力。 迁移差别指数是反映具有某种特征的迁移人口与非迁移人口区别的指数。例如，专业技术人员的人数所占比重，各种文化程度人数所占比重等，以便研究人才流失和其他间题。计算公式为:M‘从IMD、一翌不丝xl。。 .义V‘ N上式中，M为迁移人数;M，为具有i特征的迁移人数;N为非迁移人数;N‘为具有i特征的非迁移人数;了八了D、为迁移差别指数。
