纯林

为探讨海岸带黑松混交林土壤生化特性及其与土壤肥力的关系，该文对3种类型黑松（Pinusthunbergii）混交林及纯林的土壤微生物、酶及土壤养分因子进行了测定和分析。

To search for the correlation between biochemical characteristics of soil and the soil fertility in mixed stands of Pinus thunbergii along seaside , the soil microorganism , enzyme and soil nutrient are detected and analysed in three types of mixed stands of Pinus thunbergii and pure stand .

和纯林相比，混交林林下土壤养分状况有所改善，土壤有机质含量提高了16.7%。

Compared with pure stand , mixed forest has a better soil nutrient status , the content of soil organic matter being increased 16.7 % .

水曲柳落叶松纯林与混交林根际土壤pH值变化对比

Comparison on pH Change of Rhizosphere Soil between Pure Ash or Larch Forests and Mixed Forests

秦岭典型人工纯林土壤生物化学性质及其对外源性C，N干扰的响应

Biochemical Characteristics of Soil and Its Reaction to External C and N Disturbances of Typical Pure Plantation in Qinling Mountain

pH值大小顺序为：水曲柳纯林根际土＞非根际土＞混交林根际土＞落叶松纯林根际土。

PH value of rhizosphere soil decline in the order of pure ash stand > nonrhizosphere soil > mixed stand > pure larch stand .

混交水曲柳导致林下土壤pH值、微生物生物量氮、微生物生物量碳、全氮和全碳均高于纯林。

Higher soil pH , microbial biomass nitrogen , microbial biomass carbon , total nitrogen and carbon were observed in mixtures compared with coniferous monocultures .

混交林群落的N、P富集率和利用系数均低于纯林的，而周转期则均大于纯林的。

For both N and P elements , the enrichment ratios and the utilization coefficients were lower , and the recycling periods were higher in mixed forest than in pure stand .

通过对试验地不同林分土壤性质及营养元素的测定，发现水曲柳落叶松混交林土壤pH值、有机质含量与水曲柳纯林无显著差异；

The soil pH and organic matter in ash and larch mixture plantation and ash monoculture varies lightly through measuring soil characteristics and nutrition element in the different stands ;

P、Ca和Mg在马尾松细根中的含量最小，而纯林中则在粗根中含量最小。

P , Ca and Mg contents of the fine root were the smallest in the mixed forest but that of the coarse root was the smallest in the pure forest .

土壤贮水量150.26t／hm2，比杉木纯林、毛竹纯林和其它混交林都大；

In soil war 150.26t/hm 2 , larger than the pure stands of Chinese fir and Phyllostachys pubescens and other mixed stands .

威布尔（Weibull）分布在同龄纯林的直径分布中已得到广泛的应用，但是在复层混交异龄林中应用的研究报道甚少。

The Weibull Distribution has been widely applied in diameter distribution of pure forest , but very few studies have been reported in mui layer forest with different ages .

结果表明，除K素外，有机质、全量N、水解性N，混交林各层次的含量都较纯林高，且底层差异较上层明显。

The results show that organic substances , total-N , Hydrolytic-N of all layers in mixed forests are higher than that in pure forests except element K , and the difference in lower layer is more obvious than that in upper layer .

分析了半干旱退化山区荒山5a生沙棘×山桃混交林与山桃纯林系统的土壤养分状况。

Soils of the 5 year sea-buckthorn and mountain peach mixed forest and the mountain peach pure forest in the semiarid degenerated mountain area were analyzed .

马尾松纯林的林下植被生物量最大，为3678t·hm-2。

Vegetation biomass in Pinus massoniana stand was 3.678 t · hm ~ ( - 2 ), the highest among the six communities .

混交林群落N、P养分年归还量达75.740kg·hm-2和5.493kg·hm-2，分别是杉木纯林的113.0%和79.6%。

The annual return of N and P amounted to 75.740 and 5.493 kg · hm - 2 in the mixed forest , respectively , being 113.0 % and 79.6 % of that in the pure forest .

长白山白桦（Betulaplatyphlla）纯林和白桦山杨（Populusdavidiana）混交林凋落物的分解

Litter decomposition processes in the pure birch ( Betula platyphlla ) forest and the birch and poplar ( Populus davidiana ) mixed forest

华山松&响叶杨（6∶4）混交林林地土壤有机质、速效磷、速效钾、pH值比华山松纯林林地分别大15.99%、10.84%、7.69%、12.5%，提高了土壤的肥力。

The organic matter , the available P , the available K , pH of mixed forest ( 6 ∶ 4 ) were 15.99 % , 10.84 % , 7.69 % , 12.5 % more than those of P.armandi pure forest , and improved the soil fertility .

混交林下的土壤A层有机质，水解氮、速磷含量及A2层的pH值，分别比各树种纯林高14%98%，7%48%，29%104%及1个单位；

Soil organic matter at A-Layer , available N and P , and pH at soil A_2-Layer are higher 14 % 98 % , 7 % 48 % , 29 % 104 % and one unit respectively in the two mixed stands than that in the pure stands .

文章通过选取珠三角地区具有代表性的16个树种的纯林样地，设置了10,20,30m的林带宽度进行降噪测试，结果表明：在10m林带宽度时，珊瑚树和高山榕的降噪效果较好；

The study was to test the Anti-noise effects of 16 representative tree species of pure woods on three different woods-widths which were 10 m , 20 m and 30 m in Zhujiang Delta .

土壤（0～40cm层）贮水量达611.2t·hm－2，比杉木纯林、毛竹纯林和其他混交林都大；

Total water storing of soil at 0 ~ 40 cm was 611 2 t · hm - 2 , larger than pure Chinese fir , pure moso and other mixed forests .

在中、幼龄杨树林地、苗圃、单一品种果园等纯林林地（果园），鸟种组成、群体密度、Shannon-Wiener多样性指数，与小麦农田生态系统一样，在17种植被类型中较低；

The species composition , the colony density and Shannon-Wiener indices of the middle-age forest and the younger growth , the nursery and the pure orchards are as lower as wheat fields in seventeen vegetations .

在改为纯林经营后的第一个10a中，林分土壤肥力指标下降十分显著，下降速率高于第二个10a，在纯林经营的不同时期，各肥力指标变化速率不一致。

The soil fertility in pure bamboo stands declined faster in the first 10 years than that in the second 10 years after they were transformed from mixed forest with trees . The fertility index varied at different rate during the period .

应用-3/2法则及广义Schumacher生长方程导出同龄纯林自然稀疏过程中密度随时间变化规律新模型，采用遗传算法对非线性模型参数进行最优估计。

Based on the famous-3 / 2 power rule and generalized Schumacher growth equation , a mathematical model for the density change of even-aged pure stands with time during self-thinning process was presented , and the genetic algorithms was used to fit this nonlinear model .

纯林杉木各径级活细根密度亦基本呈单峰型分布，但峰值出现在10-20cm或20-30cm土层。树木位置和胸径对人工林细根水平分布的影响

Compared to mixed plantation , living fine root density in pure C plantation appeared at 10 - 30 cm of soil depth . Effects of proximity of stems and tree diameters on fine root density in plantations

同龄纯林自稀疏方程验证

Testing for self - thinning equation of even aged pure stands

纯林同龄的林龄面积分布结构的指标参数

On Index Coefficient of Age-area Distribution Structure for Evenaged Pure Forest

落叶松纯林与落叶松胡桃楸混交林下土壤理化性质的研究（Ⅱ）

Physicochemical properties of soil under larch and larch-walnut mixed forest (ⅱ)

纯林、混交林型园林绿地的生态效益

The ecological effects between pure woodland and mixed of urban green space

同龄纯林的林龄分布结构变化方程

A Dynamics Equation of Age-Area Structure for Evenaged Pure Forest

纯林自然稀疏研究综述

Summary and evaluation of the researches on self-thinning pure stands