干旱地区

Some stress resistant physiological indexes of the leaves of three Ligustrum species were compared to provide theoretical basis for cultivation management in arid and semi-arid area in north China.

为给女贞、金叶女贞和金边女贞在北方干旱、半干旱地区的栽培与管理提供理论依据，对这三种女贞的部分抗性生理指标进行了比较试验。

In order to develop "water saving garden" and provide a theoretical basis to the green of arid areas. The experiment was conducted with 5 species tree seedlings of evergreen broad-leaved Prunus zippeliana, Lithocarpus glaber, Cinnamomum camphora, Schima superba, and Photinia glabra×P.

为了发展节水型园林及为干旱地区绿化提供理论依据，采用盆栽控水的方法，研究了不同干旱胁迫对大叶桂樱Prunus zippeliana，石栎Lithocarpus glaber，樟树Cinnamomum camphora，木荷Schima superba和红叶石楠红罗宾Photinia glabra×P。

In arid and semi-arid zones, appearance of microbiotic crusts will change the surface condition of sand dunes greatly.

在干旱、半干旱地区，微生物结皮的出现完全改变了沙丘表面状况。

Microbiotic crust is one of the important components in arid and semi-arid area, which attracts more and more attentions for its hydrological process recently.

：微生物结皮是干旱半干旱地区生态系统的重要组成部分，其生态水文过程受到了广泛关注，但对微生物结皮在地表蒸发过程中的作用存在较大的争议。

Soil microbiotic crusts are widespread in arid and semiarid regions, they are one of the major components of desert ecosystems, and their importance has been demonstrated by numerous researches.

：生物土壤结皮广泛分布在干旱半干旱地区与寒区荒漠，是荒漠生态系统的主要组成和景观特征之一，其重要性已被大量的研究报道所证实。

In field and pot experiment to research spatial coupling of nitrogen fertilizer and irrigating water in semi-arid area in North China under unsufficient irrigation.

主要结论如下：（1）在干旱半干旱地区，进行夏玉米生产，大幅度节约灌溉水用量（全生育期灌水量从2250 m3/ha 降低到1200 m3/ha、1125 m3/ha、600 m3/ha），对作物产量影响较小，产量下降幅度在10%-15%之间。

And rainfall data,twenty-three sites of hydrology and telemeters in KaHai drainage area in 2005 were analyzed and calculated to find that the new Co-Kriging method was feasible and the result was more perfect,the method was feasible in the west of Tianshan Mountain.

地处干旱半干旱地区的新疆河流大多数是山区性河流，水文站点较稀疏，这种问题更为突出。因此，有必要采用一些合适的空间插值方法来研究降雨量的空间分布。传统的降水量

New sea 21 are varieties which can save water effeciently,so they have advantage in arid and semi-arid region.

新海21是节水型品种，能够较充分的利用有限的灌溉水，在干旱半干旱地区具有强大的优势。

Yellow river valley is typical arid and semiarid region in China.

黄河流域是我国典型的干旱和半干旱地区，流域缺水、支流水质污染和污水灌溉面积的增加对环境、农业生产和农产品安全造成了潜在的威胁。

North China ; Arid and semi-arid region ; Wind erosion.

中国北方；干旱半干旱地区；土壤风蚀

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。