干旱风沙区,arid aeolian sand region
1)arid aeolian sand region干旱风沙区
1.For thearid aeolian sand region of Ningxia plenty of Garagana plantation recovery administer the condition of desertification land,the author has researched the influence of Garagana plantation for degenerating sand land soil and environment by grey correlative analysis and comprehensive appraisement from 11 factors.针对宁夏干旱风沙区大量营造人工柠条灌木林恢复治理沙化土地的状况下,作者从影响土壤质地结构、物理性质、化学性质以及地上植被生态系统等11个因素入手,对退化沙地土壤与环境的影响进行灰色关联分析和综合评价,结果表明:无论在各评价性状权重值等同重要的情况下还是各评价性状权重值非等同的情况下排列序位次是一致的,呈现出造林密度1665丛/hm2>2490丛/hm2>3330丛/hm2自然恢复地。
2.The data of underground water resource in thearid aeolian sand region of Ningxia is limited;the coefficient of rainfall infiltration only can be decided through observing and verifying.宁夏中部干旱风沙区地下水资料相对较少,只能采用现场观测与验证结合的方式进行确定。
英文短句/例句
1.Dam Building Using Gravel-Sand Mixture in Dry Aeolian Sand Region in Central Ningxia Hui Autonomous Region宁夏中部干旱风沙区砾砂混合料筑坝分析
2.Study on Estimated Method of Groundwater Resources of Arid Aeolian Sand Region in the Middle Area of Ningxia宁夏中部干旱风沙区地下水资源估算方法研究
parison of Cultivation Adaptability of Brassicaca mpestris L. in Arid-Sandstorm Area in Winter干旱风沙区白菜型油菜越冬栽培适应性研究
4.Evaluation and Analysis on Comprehensive Characters of Raphanus sativus L. in Arid-Sandstorm Area in Solar-greenhouse in Spring干旱风沙区日光温室春茬萝卜综合性状比较
5.Experiment on Afforestration Model of Resistant Species on Semiarid Sand Area半干旱风沙区抗逆树种优化造林模式试验
6.Division of Site Type and Selection of Resistant Species on Semiarid Sand Area半干旱风沙区立地类型划分与抗逆树种选择
7.Study on the Afforestation Model of Semi-dry Sand Area半干旱风沙区典型立地类型造林模式研究
8.Afforestation Technology for Grassland Shelterbelt in Semiarid Sandy Area半干旱风沙区草原防护林的营造技术研究
9.Soil polarization under pure stands of planted forests in the semi-arid,windblown sand region of northern Shaanxi Province,northwestern China.陕北半干旱风沙区人工纯林土壤性质极化研究
10.The Estimation of the Rainfall Infiltration Coefficient of Arid Aeolian Sand Region in the Middle Area of Ningxia宁夏中部干旱风沙区降雨入渗补给系数的估算
11.Functions of Artificial Caragana Stands Upon Improvement of Degrading Sandland and Vegetation Recovering at Arid and Wind-drift Sandland in Ningxia;宁夏干旱风沙区人工柠条林对退化沙地改良与植被恢复的作用
12.Effects of Precipitation and Soil Moisture on Survival Rate of Forestation of Desert Region in Ningxia宁夏干旱风沙区降雨量与土壤水分对造林成活率的影响研究
13.Application of Soil Sealant on Planting Ornamental Tree in Sandy Area“土壤封闭剂”在干旱风沙区观赏林木上的应用效果研究
parison Experiment on Adaptability of Cultivation Character of Muskmelon under Plastic Awning in Arid-Sandstorm Area干旱风沙区塑料大棚厚皮甜瓜适应性栽培性状比较
15.Aeolian sand, distributed extensively around China?s arid and semi arid zones, is the main bearing body of wind erosion in China.风成沙广泛分布于我国干旱与半干旱地区，是我国风蚀与风沙活动的主要载体。
16.Dynamic Analysis of Farmland Soil Moisture in Aeolian?Sandy Semi?arid Region of Northwest Hebei Province冀西北风沙半干旱区农田土壤水分动态分析
17.Appraisal and Utilization of Soil Resources in Send-Arid Region in Northwest Hebei冀西北风沙半干旱区土地资源评价及利用
18.Effect on Controlling Sandy Farmland Soil Erosion in Semi-arid Area半干旱区沙质农田土壤风蚀防治的效应研究
相关短句/例句
arid sandy area干旱风沙区
1.Oases in Hexi Corridor was taken as examples for studying the forest coverage of oases inarid sandy area.以甘肃河西走廊绿洲为例,就干旱风沙区绿洲森林覆盖率进行了研究。
3)dry and sandy area风沙干旱区
4)The sandy and semi-drought area风沙半干旱地区
5)desert region in Ningxia宁夏干旱风沙区
1.Study on the effects of precipitation and soil moisture on survival rate of forestation ofdesert region in Ningxia was carried out.宁夏干旱风沙区降雨量、土壤含水量对苗木成活率的影响研究表明,降雨量对土壤含水量的贡献可用对数曲线模拟,小于5。
6)Sand semi-arid zones风沙半干旱区
延伸阅读
干旱区水文指干旱区的水文特性和水文规律。干旱区境内干旱少雨，大部分地表为沙漠或荒漠所覆盖,地表水体很少,水文研究的主要对象是地下水。但中国干旱区境内有高大山体矗立，截获降水，地表发育有一定数量的河流。因此，中国干旱地区的山区是径流形成的地区；山前平原降水量少，基本不产生地表径流。从山区进入平原的地表水被引至灌区，大量损耗于植物蒸腾和渠道田间的渗漏与蒸发。地表水的渗漏成为山前平原地区地下水的主要补给来源。干旱区河流主要为短小的、几乎相互平行的内陆河，一般多为向心水系。单纯依靠雨水补给的河流，一般在暴雨后河床里才有水流，因此径流集中于雨季，年变际化也大。中国干旱区的河流有高山冰雪融水和季节积雪补给，也有雨水补给，互相补偿。河流水量集中于夏季，水温低，流量具有明显的日变化，洪水类型也复杂多样。以季节积雪融水补给为主的河流，最大含沙量经常出现在洪峰到来之前。这是因为地面碎屑物质随春汛大量进入河床，而当流量继续增加时，地面碎屑物质已不多了。干旱区的山区一般是地下水补给河流，平原则是河水补给地下水。中国甘肃省河西走廊平原地区的地下水，河渠水的入渗量占89％，侧向地下径流、雨水及凝结水的入渗补给量只占11％。干旱区河流水文的垂直地带性规律十分显?Ｋ娓叨仍黾樱杲邓恐鸾ピ黾樱昃读魃钜驳菰觥Ｖ泄诼衬酒牒恿饔蛏角杲邓孔畲蟮母叱淘荚?3300米处。再往高处，年降水量则递减。中国干旱区高山带形成的径流所挟带的泥沙较少，低山带当出现暴雨时，河流挟带的泥沙颗粒很粗，甚至产生泥石流。高山带河水的矿化度在300毫克/升以下，而且钙值很高；发源于中低山的小河或监歇性河流，洪水期间，矿化度可超过500毫克/升，水质也逐渐变为硫酸型甚至氯化物水。干旱区湖泊主要为内陆湖,大部分是河流的尾闾,凄补给除河水外，也有地下水，几乎全部损耗于蒸发，湖水的矿化度较高，一般为咸水湖或盐湖。冰川是中国干旱区重要的水资源。中国干旱区的内陆河，冰川融水占年径流量的27.8％。
