黄棕

The stress effect of acid rain and its acidified soil does a lot of harm to the plants.

结果表明，pH值为5.6、4.5、3.5、3.0和2.5的系列模拟酸雨对黄棕壤的淋溶，引起了土壤酸化和盐基流失。

For ryegrass, it was 127.10 Li g/g in yellow brown earth, 10.82 Li gig in yellow fluvo- aquic earth , 13.46 ii g/g in luvic chernozem soil and 232.62 ii g/g in red earth respectively. For rice, it was 173.20 ii g/g in paddy soil.

植株正常生长的体内稀土浓度也因土壤类型不同而显差异，黑麦草黄棕壤上为127.10μg/g、黄潮土上为10.82μg/g、黑钙土上为13.46μg/g、红壤上为232.62μg/g，黄棕壤上水稻植株为173.20μg/g。

Meters above sea level there is a large area below the distribution of pine forest, Shan-lin, Mao bamboo, soil is red soil (500 meters) and yellow (50-800 or 100 meters); 800 meters above the Huangshan pine and chestnut, chemical incense, bubble tree forests, mountain yellow brown soil; 1500 meters above the grass, mountain meadow soil coppice.

海拔80米以下分布有大面积马尾松林、杉林、毛竹林，土壤为红壤（500米以下）和黄壤（50—800或100米）；800米以上为黄山松林及锥栗、化香、泡树次生林，山地黄棕壤；1500米以上为草丛，山地矮林草甸土。

Compared carbon pools and turnovertime under different soil types, the result shows: soil total organic carbon is grey cinnamonforest soil＞dark-brown soil＞meadow soil＞brown coniferous forest soil＞red soil＞yellowsoil＞yellow brown soil＞paddy soil＞red soil＞flubo-aquic soil＞fengsha soil,temperate forest soil＞subtropical forest soil＞subtropical cropland soil＞temperate dry soil.Active carbon is temperate forest soil＞subtropical soil.

对不同土壤类型的碳库及其驻留时间进行比较，得出：有机碳含量呈现：灰褐土＞暗棕壤＞草甸土＞棕色针叶林土＞红壤＞黄壤＞黄棕壤＞水稻土＞农田红壤＞潮土＞风沙土，温带森林土壤＞亚热带森林土壤＞亚热带农田土壤＞温带干旱土壤；活性碳含量是温带森林土壤＞亚热带的土壤。

Through investigation, there are 44 wild orchid species, subject to 26 genuses in Xinyang. they often distributes fragmentarily under evergreen coniferous forest and deciduous broadleaved mixed forest. The soil is yellow brown loam or yellow brown earth or mortar black soil with about 6.5 PH value.

通过本次调查发现，信阳共有野生兰花26属44种；零星分布于常绿针叶和落叶阔叶混交林下，黄棕壤土或黄褐土或砂姜黑土，土壤ph值约6.5环境中。

Result shows that the weathering rates were very low (usually lower than 1.0 keq × ha-1× a-1) for allite (including red earth, lateritic red earth, red earth, yellow earth, and yellow-brown earth) in south China and silalsol (consisting of dark brown forest soil, black soil, and podzolic soil) in northeast China, but very high for xerosol and alpine soil in northwest China.

总的说来，中国南方富铝土区域（包括砖红壤带、赤红壤带、红壤黄壤带和黄棕壤带）以及东北的硅铝土区域（包括暗棕壤黑土带和漂灰土带）的土壤风化速率较低（通常低于1.0 keq × ha-1× a-1），而西北地区干旱土和高山土的风化速率则较高。

The statistics and multiple analysis were used to suggest the diagnostic properties and diagnostic indexes for yellow brown earth and cinnamon soil in the south part of Shaanxi Provice.

利用数理统计和多元分析等方法，提出了陕南黄棕壤、黄褐土的诊断特征及诊断指标。

Yellow brown earth ; cinnamon soil ; diagnostic property ; South Shaanxi

黄棕壤；黄褐土；诊断特征；陕西南部

Soybean planted in the yellow brown soil, althongh they had big difference in nodule numbers caused by different inoculation methods, there were no difference in the fresh shoot weight because of the poor nutritional conditions. Soybean planted in the brown soil, the difference between different inoculations and fresh shoot weight were obviously because of the balance nutritional conditions. Although there were big difference in nodule numbers when soybean were planted in the peat, there were no difference in the fresh shoot weight, this might be caused by peat, the peat were not a natural soil type and the nutritional conditions might be unbalance.

分期采样的结果表明，黄棕壤中栽种的大豆，虽然接种根瘤菌对结瘤作用有较大的影响，但由于黄棕壤的肥力状况欠佳，而对豆科植物地上部分生长的影响未显出作用；棕壤土中栽种的豆科植物，接种根瘤菌在结瘤方面和植物地上部分生长方面，由于土壤肥力状况较为平衡，均表现出明显的效果；草炭土中生长的豆科植物在结瘤方面虽然表现出较大差异，但由于这种土壤的肥力状况不适于豆科植物的生长，而使地上部的生长也未形成统计上的差异。

Mainly cinnamon soil, yellow-brown soil, brown soil are three types of high natural fertility, such as suitable for walnut trees of various kinds of economic growth and development

土壤主要有褐土、黄棕壤、棕壤三种类型，具有较高的自然肥力，适合核桃等多种经济果树的生长发育

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。