dbh
dbh
1. The height, DBH and crown of C.burmannii individuals were found moderately differentiated.
(2)阴香种群个体的高度、胸围和冠幅多数为中等分异;
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*若主机域名所对应的邮局已存在，则可选择将赠送的邮局空间及 邮箱 .
3. $dbh = new DB_oracle ( );
//这个我用了自己写的类了.
4. The treatment of 10kg organic fertilizer +0.5kg fertilizer 3 and different organic fertilizer +different P fertilizer was obvious higher than contrast in promoting dbh increment of poplar.
10 kg有机肥+0.5kg3号复合肥和不同有机肥+不同磷肥的处理在胸径连年生长量上,也极显著高于对照。
5. The Average high and DBH are 8.61 m and 13.58 cm respectively, and the maximum of hight and DBH are 12.3 m and 18.8 cm at the age of 19 years.
19年生平均树高和胸径分别为8.61m和13.58cm,最高树高和胸径分别达12.3m和18.8cm。
6. Mean height, diameter at breast height (DBH) and stand biomass were 44.8%, 32.7%and 139.76% higher in the mixed stand than in the poplar pure stand respectively.
26a生沙棘-杨树混交林中的杨树平均株高比纯林的高44.8%，平均胸径粗增加32.7%，林分生物量比同龄杨树纯林高139.76%。
7. Sapflow and sapwood area of Populus euphratica with 60cm (DBH) were higher than 15 cm and 28cm (DBH), and its velocity was lower.
5月和8月胡杨液流量有相似变化规律,而且60cm胡杨液流量都远远高于28cm和15cm。
8. Regression equations for different DBH groups are establisheded by studying the relations between tree height and DBH.
6 研究了树高与枝下高的相关关系，选出的各分组回归方程的复相关系数为0.119-0.3829，平均精度为96.35%，最低精度为67.39%，其结果可靠程度低于树高与胸径的回归方程。
9. DBP and DBH are the dechlorination and oxidation products of DDT, with DDE a dehydrochlorination product.
DDT脱氯、氧化产物DBP和DBH; DDT脱去HCI生成的DDE;
10. HONG L X,DU G J,ZHANG Q R,et al.Weibull DBH distributions and their dynamic predictions in the natural unevenaged evergreen broad-leaf juvenile forest[J].Acta Phyioecologica Sinica,1995,19(1):29-42.
[5]洪利兴,杜国坚,张庆荣,等.天然常绿阔叶异龄幼林胸径的Weibull分布及动态与预测[J].植物生态学报,1995,19(1):29-42.
11. antioxidant DBH
[化] 防老剂DBH
12. The DBH, height and the wood volume of these three pine species are closely correlated to the stand age which can be expressed using the regressive equations, y = a + b, y=a + bx + cx2, and y = a + bx respectively.
“三松”胸径、树高和材积随林龄的变化规律分别可用y=a+b1nx、y=a+bx+cx~2和y=a+bx回归方程来描述,相关紧密。
13. The sap flow velocity of Populus euphratica with different DBH had different seasonal rules, for DBH is 60cm and 28cm, velocity was bigger in May then in August, while for 15cm, velocity in August was bigger;
不同胸径胡杨流速具有不同季节变化规律,60cm和28cm胡杨液流速率均5月>8月,而15cm的8月>5月。
14. Compared with controls the mean gains of their height, DBH, individual volume was 9.98%, 11.72% and 36.53%, respectively.
与对照(各种源平均值,下同)相比树高、胸径和单株材积的平均增益依次为:9.98%、11.72%和36.53%。
15. Compared with controls the mean gains of their height, DBH, and individual volume was 8.53%, 38.18% and 60.97%, respectively.
与对照相比树高、胸径和单株材积的平均增益依次为:8.53%、38.18%和60.97%。
16. Distribution Characteristic of DBH and Tree Height for Gap Edge-trees in Mid-subtropical Evergreen Broad-leaved Forest in Wanmulin
中亚热带常绿阔叶林林隙边缘木高径分布特征
17. // if error, roll back transaction } // assuming no errors, commit transaction mysqli_commit($dbh);
事务安全系统将自动地撤到系统先前的“快照”。
18. Fluorescence Quenching Method for Determination of Trace Iron with DBH PF and Triton X 100
二溴羟基苯基荧光酮-Triton-X-100 荧光熄灭测定铁
19. The DBH structure indicated a trend that Pinus armandii forest would be replaced by Picea spp.The closed afforestation adding some species of climax was the more suitable type of restoration here.
从径级结构上看，处于演替前期的华山松林有被云杉类取代的趋势，加入演替后期种的封育造林是更理想的恢复模式。
20. The number of trees planted should be more than adequate to compensate for the trees lost in terms of the aggregate DBH.
以树木胸径的方法计算树木损失的数量,然后栽种相等或更多的树木作为补偿。
21. Seven elite trees are selected based on the DBH growth and the stem form.
以胸径生长量和干形作为选择指标,从东部黑核桃优良家系中选出速生、干型好的优树7株。
22. Weibull probability density function (pdf) is used to describe the diameter of breast height (dbh) distribution for stand structure.
以韦伯机率密度函数来描述直径分布，表示其林分结构，性态值分布状况。
23. Both in absolute and relative rates, dominant trees grew faster than standard trees before stand maturation.Furthermore, fast-growth stage of DBH for the former lasted longer than that for the latter.
优势木绝对生长率和相对生长率在林分成熟期以前均大于标准木，且胸径速生期持续时间较标准木长；
24. The differences between the highest and the lowest in height,DBH and growing stock volume are 8.8%,28.0% and 76.1% respectively,in economic benefits and net present value are quite different.
优（青海）劣（河曲）种源间、树高、胸径、蓄积量分别相差8.8%、28.0%、76.1%，经济效益、净现值、内部收益率等均有明显差异
25. The selected families'mean height, DBH, individual volume was 8.1m, 16.5cm, 0.1132m3, respectively.
入选家系平均树高8.1m,平均胸径16.5cm; 平均单株材积0.1132m3。
26. The selected provenances'mean height, DBH, individual volume was 8.12m, 12.49cm, 0.0552m3, respectively.
入选种源平均树高8.12m,平均胸径12.49cm; 平均单株材积0.0552m3。
27. A total of 31 islands and 2 peninsulas had been investigated, and the DBH, the rate of seed-setting and contribution of reproduction of C. sclerophylla populations were surveyed.
共调查31个岛屿和2个半岛，分析了种群的径级结构、结实状况和繁殖贡献，同时利用核和叶绿体微卫星分子标记进行种群遗传结构研究，调查了14个岛屿和2个半岛，共467个苦槠个体。
28. The expecting genetic gains of the height,DBH and volume are 13.3%,11.7% and 37.2% respectively. The advanced generation clone seed orchards are established with selected optimal trees.
再从优良家系内选择263个优良单株,树高、胸径、材积平均增产27.2%、41.1%、125.9%,预期遗传增益分别为13.3%、11.7%、37.2%;
29. It was linear between estimated seed production and DBH in plants, suggesting that larger trees had more seeds.
单株理论种子产量与胸径呈极显著的线性关系，表明辽东栎个体大的植株产生更多的种子；
30. Fractal Characteristics of Root System, Tree Height and DBH of Choerospondias axillaris
南酸枣人工幼林根系与其树高、胸径的分形特征
31. The genetic gains of DBH and height through selection were 4.75 and 2.38 times of secondary provenance respectively.
原生种源比次生种源具有更高的遗传变异性,通过选择获得的遗传增益分别是次生种源的4.75和2.38倍。
32. Total foliage (IF) had clearly connected with BSD(r=0.912, P <0.05), the regression equation was y=1.267x+0.428 (R~2=0.832). The Mongolian pine DBH and canopy density had the remarkable correlation with BSD, respectively.
叶总量(IF)与鸟类多样性指数(BSD)有显著的正相关(r=0.912,P<0.05),回归方程为y=1.267x+0.428(R~2=0.832)。
33. Because of the differences among the increment processes of DBH, H and V, we could aquire different results with different factors by means of ordinal data cluster.
各生长因子平均生长量和连年生长量呈现不同的曲线类型；
34. The growth (DBH, Height) of each provenance were investigated on November, 2003.
同时，生长量在种内不同种源间也存在显著差异，而种源内个体间差异不显著。
35. Research on the DBH Distribution and Yield Model of Pulpwood Plantation of Eucalyptus grandis in Sichuan Province
四川巨桉短周期工业原料人工林直径分布规律及其收获模型的研究
36. The loosen degree of soil not only affected increasing voloeity of new rhizome, but also affected significantly the amount of new bamaoo, stocking percentage, DBH, fresh quality of culm.
土壤疏松程度不仅影响新鞭的增长速率，而且对新竹的数量、成竹率、胸径和杆的鲜质量也有显著的影响。
37. Height growth and DBH growth of the same strain had significant differences in different soil types.
在不同土壤类型中同一品系的高生长及径生长差异显著。
38. The natural logarithm of DBH (lnD) and square diameter (D~2) were included in the predicting models of diameter increment for all 15 species.
在全部15个树种的直径生长量预估模型中,均包含了InD和D~2二个变量。
39. At Yangkou site, DBH of pruned tree of the 12 cm-intensity (16.84 m) was the highest, followed by that of the 10 cm-intensity (16.20 cm), and that of the 6 cm-intensity (14.47 cm) was the lowest.
在洋口试验地，12cm修枝强度的胸径(16.84cm)最大，其次为10cm强度(16.20cm)，而6cm的(14.47cm)最小，强度12cm比6cm的胸径大2.37cm(16.38%)。
40. In the fine natural stands of fine provenance, 80 candidate trees were obtained through 1-4 comparison, with the average tree height 23.9m, the average DBH 72.66cm, the average volume 3.93m3, the average red-heart ratio 71.01%.
在福建省马尾松优良种源区内，用对比木法进行红心材优树选择。 共选出80株候选优树，平均树高23.98m、平均带皮胸径72.66cm、平均材积3.96m~3、平均红心率71.01%。
41. Study on DBH Increment Model of Individual Trees Growing for Larix chinensis
太白红杉单木胸径生长模型的研究
42. Observed biomass was calculated by summing each tree's biomass that was estimated by the relation equation of biomass to DBH
实际观测生物量为根据每木检尺结果,用生物量和胸径的关系计算所得
43. The early growth model including fitting equation between DBH and months,between tree height and months,and between volume and tree height,were studied.
对三倍体毛白杨在湘南地区的早期生长过程进行了分析,并对胸径、树高、材积等生长模型进行了研究。
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对于这一点，两个银行帐户间的转帐是一个很好的例子。
45. A correlation analysis was carried out among the age of fine E. ulmoides clones and height, diameter of breast height (DBH), bark and leaf yields in the first six years.
对杜仲优良无性系前6年树高、胸径、产皮量、产叶量与树龄的相关关系进行了调查分析。
46. It was found out that the value of the stand DBH at the succession stages appeared to be inclined to left side mountain-liking curve.
对林分结构研究表明，不同发育阶段的林分林木直径分布呈左偏单峰山状曲线，林木株数随径阶变化可以分为四个阶段；
47. The height curve equation h=a 0d a1 was most accordant the pattern of height with DBH.
对树高曲线方程而言 ,h=a0 da1 最符合火炬松树高随直径变化的规律。
48. The diameter at breast height(DBH) of each tree was recorded.We determined the life table, age structure and survivorship curve of the Abies fargesii to analyze population structure and dynamics.
巴山冷杉幼苗储备丰富，巴山冷杉自身的生物学特性及环境因素是形成这种现象的主要原因；
49. Mean DBH
平均胸径
50. The result of using The Analytic Hierarchy Process showed that the best management planning is: all broadleaf trees with Dbh above 20 cm are cut off in the first year, and all trees with Dbh above 30 cm are cut off at the 50th year.
应用层次分析法评价的结果表明，试验样地的最优经营方案为：当年伐除胸径20cm以上的全部阔叶树，50a后伐除胸径30cm以上的全部树木。
51. defoliation character and the DBH,growth phase and the height character was positively correlated to each other moderately;
开花性状与树高、胸径等生长性状均呈负相关，落叶早晚与胸径、生长期与树高均呈中度正相关；
52. Description: Large evergreen trees to 30 m tall and 1 m in dbh;
形态特徵:常绿大乔木，高15-30米，胸径可达1米；
53. Description: Large evergreen trees to 30 m tall and 1 m in dbh; twigs glabrous except grayish puberulous on nodes when young.
形态特徵:常绿大乔木，高15-30米，胸径可达1米；小枝无毛，但嫩时芽及节上被灰褐色、平伏的微柔毛。
54. allocation in each DBH class
径级分配
55. DBH frequency distribution
径级频率分布
56. In practice,methamidophos 50EC could be injected at the rate of 1 0 mL per plant to bamboo 12 cm or over 12 cm of DBH,and 0 5 mL to under 12 cm of DBH.
所以对胸径 1 2cm以上的毛竹注射 1 0mL·株 -1原液 ,胸径在 1 2cm以下的注射 0 5mL·株-1原液即可。 打新孔注射甲胺磷 ,防治竹叶害虫效果好。
57. Population height, diameter breast height (DBH) and crown were studied in Cinnamomum burmannii population in Karst hills of Guilin, as well as their relationships.
探讨了桂林岩溶石山阴香种群的高度、胸径和冠幅以及三者间的相互关系,并采用分异指数量化了种群个体间高度、胸围和冠幅的差异程度。
58. The genetic correlation coefficients of DBH and height among 3 data sets of performances were as high as 1 0 in Japanese larch,so the early selection would be possible in the species.
日本落叶松树高和胸径这两个指标 3个年份之间的遗传相关系数都非常高 ,接近 1 0 ,因此开展日本落叶松的早期选择是可行的。
59. There are also much higher genetic gains for DBH and Volume of the families that arrive to 12.68% and 25.26%,and for HT just is 6.68%. Therefore,DBH and Volume of families will be the main factors in the early selection.
早期选择的家系胸径和材积具有较高的遗传增益,分别达到12.68%和25.26%,树高仅为6.68%,因此家系在早期选择时将更多考虑材积和胸径因子。
60. 14532 with a mean height of 12.94m and 13.01m respectively, and a mean DBH of 11.62 cm and 11.34cm respectively. The worst provenance is No. 10140 with a mean height of 6.71m and mean DBH of 5.96cm.
最好种源为12895、14532,树高分别为12.94、13.01 m,胸径为11.62、11.34 cm,最差种源10140,树高为6.71 m,胸径为5.96 cm。
61. Families mean broad sense heritability for tree height was 86.67 per cent, for DBH 80.01 per cent.
本试验估算的广义家系平均遗传力树高为86.67%,胸径80.01%;
62. The stand average DBH, height andvolume are respectively 9. 7cm, 9. 1in and 111. 2m/hm2.
林分平均胸径9.7cm，平均树高9.1m，蓄积量111.2m3/hm2，萌芽木株数占全林株数的78%；
63. At stand level, DBH growth was more seriously restricted than height growth.
林分高度生长受压抑程度低于胸径生长；
64. Population age structure and recruitment information were obtained using an age-DBH (diameter at breast height) regression from the sampled cores and the DBH measured on all trees in the plots.
某一地区的太阳辐射能量高常会导致高温少雨，故高强度的太阳辐射使表土的湿度降低而不利于树木的径向生长。
65. the average DBH of willow is 20.0cm, the average height is 7.5m.
柳树的平均胸径为20.0cm,平均树高7.5m。
66. However, The Mongolian pine height, density, DBH and the height and covering degree of grass under forest highly was not remarkable relevance with bird density, respectively.
树的高度、密度、胸径、森林下草的高度,草的盖度与鸟类密度相关不显著。
67. The tree height, DBH and volume have bigger genetic variation coefficients and heritabilities, and the genetic gains are 12.2%, 18.7% and 34.3% respectively at the Selection rate of 5%;
树高、胸径、材积的遗传变异系数较大,遗传力也较高,在5%的入选率下,其遗传增益分别是12.2%,18.7%和34.3%;
68. The PL of their height, DBH and individual volume was 30.28, 70.42, 72.66, respectively.
树高、胸径和单株材积的性状表现平均水平值(PL值)分别为:30.28、70.42、72.66;
69. The PL of their height, DBH, individual volume was 75.74, 73.73 and 78.22, respectively.
树高、胸径和单株材积的性状表现平均水平值(PL值)分别为:75.74、73.73和78.22;
70. The summit of the annual increment in height and DBH appeared before the age of 5 years old with an annual increment of 2. 6 m in height and 4. 2 cm in DBH.
树高、胸径连年生长量高峰多在5a以前出现,高峰期树高连年生长量达2.61m,胸径达 4.2cm;
71. The growth of all the progenies from the clones in the seed orchard have exceeded those from their plus trees in plantations,having an average gain of 9.1%(4.7%~14.1%) for height and 14.5%(9.9%~23%) for DBH.
树高增长9.1%,胸径增加14.5%。
72. Compared with the family with the worst growing performance,the average tree height,DBH and individual volume of quality families increased by 12.60%~32.33%,31.385%~38.72% and 102.30%~235.77% respectively.
此7个优良家系,与最差家系相比较,其平均树高增加12.60%~32.33%,平均胸径增加31.385%~38.72%,单株材积增加102.30%~235.77%。
73. A STUDY ON SIMULATING PREDICTIVE MODEL OF MEAN DBH FOR BAMBOO STANDS
毛竹林林分平均胸径模拟预测模型的研究
74. The sapwood was a significantly better estimater than DBH for foliage mass and area. Equations are Y foliage mass= 0.1279+ 0.0591S1:3, and Y foliage area= 0.6796+ 0.3574S1:3
求算出了用胸高直径处边材输导横截面积(S_(1·3))估测叶面积和叶量两个有用的方程:y叶量=0.1279+0.0591S_(1·3); y叶面积=0.6796+0.3574S_(1·3)。
75. The Construction of Outturn Table Based on Both DBH and Height Measurement for Poplar in Jiangsu
江苏省杨树二元材种出材率表的编制
76. The relationship of scenic value and tree growth in Finns tabulaeformis stand is the higher DBH, the better vision effect;
油松风景林的美景度与林木生长间的关系，一般胸径较大观赏价值较高，生长势较好林木的观赏效果也较好；
77. DBH of pruned tree treat with 12 cm intensity was 2.37 cm (16.38%) higher than that treated with 6 cm intensity.
洋口试验地，6与10cm、6与12cm修枝强度之间的胸径差异达到显著水平；
78. Growing in adaptable habitat in Hainan mangrove zone,the mean height of five year old trees is 9.2 m,the mean DBH of that 12.9 cm,39.4% and 26.5% higher than that of indigenous dominant tree species S.caseolaris (L) Engl respectively;
海南无瓣海桑5年生平均高为9.2m，平均胸径为12.9cm，分别高出本地优势种海桑39.4%和26.5%，差异极显著。
79. The DBH s of the individuals ranged mostly from 5~20 m or from 15~30 m.
海桑种群个体胸径集中分布在5~20cm或15~30cm;
80. The DBH class distribution of the arbor tree species shows all obvious pyramid type.
生活型组成则以高位芽植物占显著优势(72.1%)。
