Quantitative classification and ordination aiming to realize multifactor ecological land classification was developed for the mountainous region in eastern Liaoning Province. Data for ground flora and canopy trees species from selected stands were summarized and subjected to TWINSPAN classification and PCA, CCA ordination. CCA indicated that slope and aspect were highly correlated with the ground flora and canopy tree species. Pairwise MRPP tests indicated many significant differences (P<0.05) among the vegetation groups and environmental factors. 6 types of plant community, which can be used to indicate the vegetation type in ecological classification system, were based on cluster analysis of the six most environment factors. The vegetation of the mountainous region in eastern Liaoning Province was believed to be related a moisture and nutrient gradient which was mainly influenced by slope and aspect, which can be used as criterion in ecological land classification.

Regeneration dynamic in logging gap of different sizes and ages was studied in Populus davidianaBetula platyphylla secondary forests in Changbai Mountain by using line transects method. The results showed: The gaps occupied 7％(canopy gaps area<50 m²)，21％(50～100 m²)，36％(100～150 m²)，29％(150～200 m²)，7％(>200 m²) in the proportion of logging gap sizes respectively; Gaps were usually formed after 7～10 trees logged that were mainly composed of P. davidiana, B.platyphylla and Maackia amurensis. The composition of seedlings species was simple and the distribution of seedlings was not evenness in gaps. The species number, individual density, LAI, mean height and mean basilar diameter of seedlings were better in gaps than in non gaps. Some species, such as Acer mono, Sorbus pohuashanensis, M. amurensis adapted well to gaps, but other species, such as Fraxinus mandshurica and Malus baccata adapted well to non gaps. With the increasing of gap ages, owe to the litter and nutrition content increasing in soil, the species number and individual density of seedlings increased distinctly, and seedlings growth was improved, the advantage for regeneration in gaps was more obvious than in non gaps. The seedling trait was obvious difference at different position, within gaps result from the obvious space heterogeneity of PAR, soil nutrition content and litter. The regeneration was best at west edge of gap and most inferior at center and midnorth of gap. The seedlings of regeneration in <50 m² gaps were as equivalent as those in nongaps, the least in >200 m² gaps and excellent in 100～150 m² gaps where the individual density, LAI, height growth and basilar diameter growth were firstclass, which was due to the huge difference of PAR in gaps of different sizes. Therefore, the gap of 100～150 m² benefited the regeneration of seedlings best.

The landscape pattern and fragmentation in Beitun of Irtysh River Basin in Xingjian was analyzed by using RS and GIS in combining with the vegetation maps and field investigations. Quantitative indices of landscape pattern were chosen to examine landscape pattern and fragmentation. By using the software ERDAS image8-7, 7 primary landscape types and 10 secondary landscape types were classified, which including 5 primary vegetation types and 8 secondary vegetation types. The total classification accuracy was 87.2%. The primary vegetation types area percentage of farmland, riparian forest, wetland, grassland and desert vegetation was 16.5%, 2.6%, 1.6%, 10.5%, and 52.2% respectively. The patch maximal perimeter, patch maximal area and mean area indices of riparian forest were lower than other vegetation types, which disclosed that riparian forest distributed in the manner of smaller patches in the whole landscape. The value of mean patch shape, fractal dimension index, and edge density index of riparian forest were higher than other vegetation types, which indicated that riparian forest had more complex patch shape. All the pattern indices demonstrated that riparian forest was the most fragmented type in Irtysh River Basin, which was mainly due to that the riparian forest haven experienced high intensity and frequency of human disturbance since it had the highest biodiversity and most abundant natural resources in the landscape of Irtysh River Basin. The landscape diversity indices showed that the patch area distributed rather unevenly, the patch number distributed more evenly, however. 

Growth characteristic of Populus×xiaohe i plantaion had been studied in sand land of North China. The results showed: Tree height growth of P.×xiao hei was earlier than the breast diameter growth, the competition for resources grew cruelly among the trees in later growth period; The maximum of current annual increment and mean annual increment of tree height appeared nearly synchronously, so did the breast diameter, But the maximum of current annual increment of timber volume appeared much more earlier than the maximum of mean annual increment; The current annual increment and mean annual increment of tree height, breast diameter and timber volume were respectively intersected in about 6, 10 and close to 16 a; The growth process of P.×xiaohei was divided into four periods: 0～3 a was the young stand period, 4～14 a was the fastgrowing period, 15～16 a was the near mature period, 17～26 a was the overmature period; The rotation of P.×xiaohei was 16 a.

The biomass, carbon content, carbon storage and their vertical distribution were measured in 32-year old artificial stand of Phoebe bourmei. The results showed: The mean biomass is 174.33 t\5hm^-2, in which the arber layer is 166.73 t\5hm^-2 accounting for 95.6%. The carbon content of stem, bark, branch, leaf, roof, shrub, herb, litchen and litter is 0.576 9, 0.465 4, 0.523 2, 0.495 8, 0.493 1, 0.498 9, 0.473 3, 0.414 3 and 0.388 2 gC\5g^-1, respectively. The mean carbon content of soil which reduces gradually with the depth is 0013 9 gC\5g^-1. The total carbon storage of P. bourmei stand ecosystem, is 227.59 t\5hm^-2, is devided into soil layer (0～80 cm) accounting for 58.40% (133.88 t\5hm^-2), tree layer accounting for 40.13% (91.33 t\5hm^-2 ), herb accounting for 0.76% (1.71 t\5hm^-2 ), litter accounting for 0.29% (0.66 t\5hm^-2 ), litchen accounting for 0.28% (063 t\5hm^-2 ) and shrub accounting for 0.17% (038 t\5hm^-2 ). The tree layer productiong is 6669 1 t\5hm^-2 a^-1  which accounts for 77.62% of the mean net production (8.570 6 t\5hm^-2 a^-1). The tree layer sequestration is 3573 6 t·hm^-2a^-1 which accounts for 84.01% of the mean annual carbon sequestration (4.253 6 t·hm^-2 a^-1).

The paper pointed out that crown “bright dots" constitute of image were prerequisite to test crown width, supported by plentyly of aerial photo crown width x and ground tree diameter y， and then demonstrated the intercept linear relation between aerial photo crown width x and ground tree diameter y . As random disturbance of tree crown density, crown width x and ground tree diameter y were dissatisfied equal variance. It was necessary to introduce random effect parameter based on original parameter linear model. The paper let “plot" as random effect structure parameter,“tree crown type" as group variable, their cross product as “random effect" parameter design matrix.Aerial photo crown width x and ground tree diameter y linear mixed model were constructed and optimization unbias estimation.Linear mixed model Rwas 0.72, and general linear model R was 0.57 The essence of linear mixed model was fixed parameters equation add random disturbance. Random disturbance forecast equation parameters with were independent on aerial photo scale as standardized data．

The adsorption property of aniline on bamboo-charcoal was studied in aqueous solution. Parameters such as contact time,pH,mass of absorbent, adsorption temperature, and initial concentration of aniline in solution were also studied. The result shows that adsorption equilibrium time is 360 min. The bamboo-charcoal showed high adsorption ability for aniline at a wide pH range(pH 4.0～6.4), the optimized adsorption acidity of bamboo-charcoal for aniline is pH 5.90 in Hac-NaAc medium. As initial concentration of aniline is 0.060 mg·mL _-1 ,the equilibrium adsorption amounts is 44.5 mg·g^-1 . The aniline can be removed from aqueous solution effectively with bamboo-charcoal. As the adsorption temperature increases, the adsorption decrease. And it has been proved that the adsorption process is an exothermic process. The adsorption behavior of bamboo-carbon for aniline obeys the Freundlich isotherm model. The used bamboo-charcoal is treated with microwave by heating in 0.8 mol·L^-1 H₂SO₄,the adsorption ability can be regenerated to 97%. As absorptive material, the bamboo-charcoal can be applied to remove aniline from wastewater.