固定沙丘

库布齐固定沙丘土壤微生物生物量的垂直分布研究

Vertical Distribution of Soil Microbial Biomass in the Stabilized Sand Dune of the Hobq Desert

土壤氮素和磷从流动沙丘到固定沙丘含量有所上升，钾素则变化不大，大部分剖面和层次土壤pH呈微碱性；

N and P are raised from flowing dune to fixed dune , and K is not change great , the PH in mostly profile and arrangement is slight alkalinity ;

土壤pH值在滩地和固定沙丘的空间分布符合球状模型且空间自相关显著，但在半固定沙丘空间自相关不显著；

The soil pH did not exhibit significant autocorrelation in the semi - fixed sand dune but it did significant autocorrelation in the meadow and the fixed sand dune , both fitting the spherical model .

固定沙丘上灌丛的上述特征大致介于二者之间，而其当年枝长度频度符合Weibull分布。

The population in fixed sand dunes was rather intermediary between the above two and the frequency distribution of the first year shoot lengths followed a Weibull Distribution Model .

C4植物种占所测植物种的1/5左右，主要分布于固定沙丘上，且随着生境土壤湿度的增大其与C3植物种的光合速率差异逐渐缩小。

Of the plants measured , C 4 species are mainly distributed on fixed sand dunes . The differences between C 4 and C 3 species decreased gradually with increasing soil moisture .

固定沙丘群落的演替动力是种间竞争的结果。

But that of the fixed dunes is the contention between species .

不同破坏方式对固定沙丘植被的影响

The impacts of different destructive modes on the vegetation of fix dune

固定沙丘土壤水分时空动态变化研究

Spatiotemporal Change of Soil Water in Fixed Sand Dune

科尔沁沙地固定沙丘植被物种多样性对降水变化的响应

Responses of species diversity to precipitation change on fixed-dunes of the Naiman Banner region

固定沙丘结皮层藓类植物多样性及固沙作用研究

Study on diversity and Binding-sand effect of moss on biotic crusts of fixed dunes

初步定量分析了，固定沙丘不同部位生境变化规律。

Initial quantitative analysis , fix different part of dune to habitat variety regulation .

沙漠固定沙丘小生境的研究，是我们分析整个沙漠生境的重要部分。

The research of dune habitat , is the foundation that we analyze the whole desert .

内蒙古多伦农牧交错区固定沙丘植被群落特征分析

The Analysis on Vegetation Community Characteristics in Fixed Sand Dunes in Duolun Farming-Pastoral Zone of Inner Mongolia

固定沙丘生物结皮层藓类植物形态结构及其适应性研究

A Study on Morphological Structure and Adaptability of Mosses Grown in Field Stratum to Fix Sand Dunes

种子自然繁殖一般出现在低缓的流动、半固定沙丘和平沙地上；

The regeneration by seeds usually takes place on shifting , semi-fixed dunes and flat sandy areas .

腾格里沙漠固定沙丘藓类植物结皮层的自然恢复及人工培养试验研究

Experimental studies on natural regeneration and artificial cultures of moss crusts on fixed dunes in the Tengger Desert

固定沙丘土壤种子库含量最大，流动沙丘的最小。

Soil seed bank density in fixed dune was greatest , the least in moving dunes . 3 .

腾格里沙漠固定沙丘结皮层藓类植物的生态功能及与土壤环境因子的关系

Ecological Function of Mosses in Biotic Crusts on Fixed Dunes on Tengger Desert and Its Relation with Soil Factors

围封3-5年的恢复中期，半固定沙丘向固定沙丘转变；

Second , the intermediate stage is within 3-5 years of closure , the semi-fixed sand dunes being gradually stabilized .

固定沙丘、半固定沙丘和流动沙丘的土壤种子库中植物种类间的相似性系数都比较大。

The similarity of soil seed banks in fixed dune , semi-fixed dunes and moving dunes were bigger . 4 .

在干旱的西部地区，从东到西虽然地带不同、生态环境不同，但都是固定沙丘、沙地的结皮层或表层的土壤酶活性最强，结皮层最厚，韧性也最强。

In spite of the fact that the western arid regions are different in zonality and ecological environments from east t ?

腾格里沙漠西南缘固定沙丘水分动态与水分势能变化特征研究

Study on the Characteristics of Moisture Behavior and Moisture Potential Changes in Fixed Dunes on the Southwestern Edge of Tengger Desert

不同沙丘类型白刺地上生物量变化明显，半固定沙丘白刺生物量最大。

The change of biomass on different Nitraria tangutorumdune was evident , among which the biomass of semi-fixed dune was maximum .

流动沙丘、半固定沙丘前移规律年、季变化明显，但二者的移动速度不同。

Movement rules of active dune and semi-fixed dune vary obviously with years and seasons , but their moving velocities are different .

在退化荒漠草原区，种植柠条林后比未种植前的半固定沙丘地上植被物种数、植株数均明显增加。

In regress desert grassland , ground vegetation species and number are significantly increased in planting Caragana forest than not planting area .

从流动沙丘到固定沙丘，植物种类组成、土壤微生物数量和土壤养分含量，均出现相同的变化规律，由少逐渐增多；

From flowing to fixed dunes the variation of microbial numbers and contents of nutrient in the sand of were increased gradually .

在沙漠利用污水灌溉速生林，可固定沙丘，改良土壤；改善生态环境，实现污水零排放。

That fast-growing forestry in desert can fixup sandbank and meliorate soil , improve environment and prevent waste water from flowing into river .

移动沙丘和半固定沙丘分选较好，表现出极强的正偏和较尖的峰值；

The particle-size classification of moving dune and semi-fixed dune was better , which showed a strong positive bias and a sharp peak .

为人工促进固定沙丘结皮层的形成提供理论和实验依据。

The research will provide the evidence of theory and experiment for the formation of soil crust on fixed dunes in artificial promotion .

现代荒漠化过程表征的主体为农田风蚀沙化过程、草场退化过程、固定沙丘活化与流动沙丘移动过程。

The modern desertification process consists of farmland wind erosion process , grasslands degradation process , fixed dune activation and drifting sand moving process .