The quantitative process of the quantitative theory (Ⅰ) has been improved and the method of expert evaluation mark has been adopted in this paper. As we know, in the quantitative process: i=1, 2, …, n, j=1, 2, …, m, k=1, 2, …, r.where n is sample number, m refers to item numbest and r represents category number of item j.Now, for the improved quantitative process, assume where β_i(j, k) can be comprehended the weight or contribution of category k of item j and given by the expert evaluation mark.Through verification of actual model, the forecasting precision of improved quantitative theory (Ⅰ) model is obviously enhanced.

The effects of soil microbes and soil enzyme activities on soil nutrient states and the growth of stands were studied in poplar stands mixed with different tree species during 1992-1995. The experiment was disigned in five treatments and three replications. The stands were located in Daxing County, Beijing and Minquan County, Henan Province With an area of 1.8hm² and 3.2hm² respectively. The results are as follows: (1) The microbes quantity found increased in the mixed stands. There were obviously differences in the quantity of microbes among the five treaments (P=79%). (2) The soil enzyme activities varied with treatments (P=87%), the invertase and the phosphatases were increased obviously in the treatments A and C. (3) The productivities of poplar mixed stands are closely correlated with the soil nutrient status, soil microbes and the enzyme activities.

A comparison was made on the plant divenity of Pinus koraiensis forest after selective cutting and Betula platyplla secondary forest formed after clear cutting in the P. koraiensis forests in Changbai Mountain forest region in China. The results show that the divenity of the whole community and undergrowth of B. platyphylla secondary forest are higher than that of any type of P. koraiensis forests. The divenity of the whole community and tree layer of P. koraiensis virgin forest with slight-selective cutting are the highest among all P. koraiensis forests, which is the result of the forest adapting long term succession and species adaptation. Because B. platyphylla forest is in the second succession stage, more shade-tolerant tne species had colonized the community. Besides, solar radiation is the B. platyphylla forest is better so that the undergrowth developed well, and the diversity of woody plant is very high. At last, The relationships between diversity and evenness, haibtat of the communities are analysed.

This paper described the population structure of P. ussuriensis Kom. The fourteen random primers chosen for analysis generated 180 bands that ranged in size from 211 bp to 1636bp. Estimates of Shannon's phenotypic diversity index ranged between 0.271 and 0.392, averaging 0.310. Analysis of molecular variance partitioned the RAPD variation into the among-and within-population components. The among-population components accounted for 62.3% of the variation and within-population accounted for only 37.7%. Estimates of Ho also varied among primers, with CH_1-1, detecting. Highest (0.540) and 2116 detecting the lowest (0.151) value Of diversity.

Chinese fir and five exotic pines species Pinus elliottii Engelm., P. teada L., P. caribaea Morelet, P. rigida Mill., P. tropicatis Morelet were used in mixture expedment. The proportion of all mixed experimental plantations, except the control plot (pure Chinese fir plantation), was 66% Chinese fir plus 34% pines. The planting density 2 500trees/hm², all the seedlings used were 1-year-old planted in spring, in 1983.These mixed plantations were invesdgated 9 years later for their productivity, irradiance energy-use rate and nutrient-use efficiency and nutrient return rate in the nutrient cycling.The productivity and nutrient-use efficiency were the highest in the 66% Chinese fir plus 34% P. teada mixed plantation, its biomass amount reached 6.55t/hm²·a and producing biomass 73kg/hm²·a from each kg nutrient. The irradiance energy-use rate and accumulated bio-energy and nutrient return rate greatest in the 66% Chinese fir plus 34% P. caribaea mixed plantation, the total amount reached 3.97% and 17336kj/m²·a and 4.86%, respectively.The result of the comprehensive evaluation showed that: the scores of four items and tewlve categored from greatest to last are in due order: 66% Chinese fir plus 34% P. rigida plantation >66% Chinese fir plus 34% P. caribaea plantation > 66% Chinese fir plus 34% P. elliottii plantation > 66% Chinese fir plus 34% P. teada plantation (scored 71.6%) > 66% Chinese fir plus 34% P. tropicalis plantation > pure Chinese fir plantation.The result also indicated that p. rigid a and P. earibaea are the suitabler pine species to be mixed with Chinese fir in the central substropical area of China.

More than ten population of masson pine caterpillar (Dendrolimus punctatus Walker) in Jiangxi Province were tested by the methods of the bioassay and bioohemistry. The results showed that the tolerance to pyrethroids was related to the activity of carboxylesterase in masson pine carterpillar The activity of carboxylesterase was higher in population more tolerant to deltamethrin, fenvalerate and cypermethrin than in the population less tolerant. Treated carboxylesterase of masson pine carterpillar with five synergists, SV₁, and TPP showed strongly inhibition, and as the amount of SV₁ or TPP increased, the activity of carboxylesterase decreased correspondingly. After applying topically massonpine carterpillar with the same amount of SV₁ or TPP, the activity of carboxylesterase changed regularly.

In the paper the results of wood tissue microt-dissection of four Casuarina strains are reported, the physical ciharacteristics of wood vessels, lignified cells between vessels and rays are reported, and the mechanism of insect resistance is carified. The wood vessel number of the high-resistant strain C₄₄ is few and the unit area (1mm²) contains only 20.25 vessels which account for merely 9.72% of the wood area; the lignified cells between vessles are relatively evident and the ratio of wall thickness to lumen diameter is maximal (56.59%); the indexs of the beam number, length and width of rays within the unit area and the area proportion are minimal. The above-mentioned show that the xylem water content of the strain is low, its wood is hard and compact and the nutrients provided by the xylem are few, which are unfavourable to the survival and development of the larvae of Anoplophora chinensis (a stem-boring pest).

Hylobitelus xiaoi sp. nov (Fig-1-13)Body dull black; apices of tibiae, tarsi and antennae dark brown. Pronotum with sparse ochreous setiform scales, which being a little denser behind the anterior margin and before scutellum. Elytra with setiform scales forming two rows of patches; patches of front raw on second and tenth intervals at 1/3 from base, patches of front raw on fourth and sixth intervals a little before and behind the above patches; patches of hind row on second, sixth and eighth intervals approximately at 1/4 from apex, the patch of hind row on fourth interval a little before the others, the hind row patches sometimes forming an ill-defined sinuate band; the other area of elytra with sparse scales of the similar shape.Legs and underside of the body with yellowish white setiform scales.Male: Head with small dense punctures. Forehead between eyes 2/3 the width of the base of rostrum, with a small median fovea. Rostrum slightly shorter than pronotum (9: 10), gradually narrowing from base to middle and widening anteriorly from the scrobe; dorsum with rather rugose punctures, which longitudinally confluent. forming two weak carinae on each side, without median carina; apical area bare and with longitudinally dense wrinkled punctures. Antennae with second segment of funicle 3/4 times as long as the first and 1.5 times as long as the third, the third a litle longer than the fourth, fourth to sixth segments of funicle moniliform, the seventh a little wider than long and as long as the third; club compact, three segmented, each length about the same (fig.-2). Pronotum as long as wide, rounded laterally, widest at the middle, slightly constricted near apex; disc with large longitudinal confluent punctures, which smaller and denser at apex, the interstices convex and glassy, median carina convex and short Scutellum evident, with dense setiferous yellowish white scales (fig.-3). Elytra 1.5-1.6 times as long as wide, almost parallel-sided from base to middle, and gradually narrowing to apex. Striae with regular large punctures, which becoming smaller at declivity. Intervals almost as wide as striae, weakly convex. Legs with fore tibiae weakly dilated internally at middle (fig.-7), hind tibiae almost straight internally (fig.-8). Metasternum with larger punctures, those in its central part smaller and sparser, Its central bare depression side, which becoming smaller and sparse at middle area, median bare depression much longer than wide (fig.-4). First ventite depressed medially; the fifth flattened in the middle, weakly concave at apex; with yellowish white setiform scales at basal area, at median apex with very ochreous dense fine hairs (fig.-6). Penis flat, rather curved, widely rounded, with very small triangular weak point at apex, beside the point with hairs at apical margin (fig.-9, 10). Tagmen and parameres illustrated in fig.-11.Female: First ventrite convex medially, not depressed. Fifth ventite slightly convex in the middle, without depression area at apex (fig.- 5). Female sternum Ⅷ Y-shaped, with numerous, very short apical setae (fig.-12). Spermatheca showed as in fig.-13.Length (excluding rostrum): 14.0- 17.5mm, breadth: 5.4-6.5mm.Holotype ♂, Allotype ♀, Paratypes 12 ♀♀ and 4 ♂♂, Ji'an, Jiangxi Province, 1994-X-25., Li Zongshun Leg..This new species is related to Hylobitelus futabae Morimoto from Mt. Tateshina-yama in Japan, but differs from it in the following characters: (1) elytra with yellowish white patches instead of four bands; (2) antennae with third segment a little longer than fourth, first segment of club as long as the second: (3) legs with fore tibiae slightly dilated medially; (4)penis with marginal sclerotized basal area wider.Biological note: This species is a destructive insect injuring Pinus elliottii Engelm. By larvae in Ji'an County, Jiangxi Province, China.Entomological note: This species is named in honor of the famous Chinese entomologist Prof. Xiao Gangrou, who sent me the specimens for the present study and encouraged me to study penistently.The type specimens are deposited in the Institute of Zoology, Academia Sinica.

Using the fast-growing Pyllostachys pubescens and Masson pine as raw materials and applying the bending theories of quadric orthogonal anisotropic composite laminated board, the structures and properties of the bamboo & wood composite container floor were designed in theories and proved by tests. The effects of compression ratio and pressing technology on the properties of bamboo & wood composite container floor were systematically studied. And compamtive analysis of the properties of this new container floor with apitong plywood container floor is made. The results show that synthetical property of the bamboo & . Wood composite container floor manufacred with rationlized structure and technology was not inferior to that of apitong plywood container floor, and it was the ideal substitute of apitong plywood for Container floor.

Lumbers (poplar, pine etc.) treated with chemical modifying agents(LM) possess a high antishrink efficiency (ASE) at 20 to 30 chemical weight percent gains (WPG). The modified wood has broad range efficiency against mold, termite, sapstain and decay fungi. It shows a high degree of fire retadancy. Wood treated with chemical modifying agents (LM) has been proved through examinadons that it's toxicity LD50 is more than 10000mg/kg; so it cause no harmful effect to people and domestic animals.

With orthogonal design, researches on the technology and prescription of surface coating of granular activated carbon, and measurement of its performance parameteners were carried out. Based on the studies, a best prescription was selected, the optimum is as follows: coating agent: 19, water: 70, stabilizing agent: 7, adhesive agent: 12. The surface coating carbon produced according to the presc.pdon is more functional, which enjoys many advantages: smoothness on their surface, wearability, no blackening hand and nice looking and absorptive poweer. If the Iodine value of raw activated carbon is 680.6mg/g and the rate of benzene absorption is 17.7%, the performances parameters of the products are Iodine value: 652.3mg/g, the rate of benzene absorption is 17.9%, deducting rate: 98.8%. If the Iodine value of raw activated carbon is 1020.3mg/g and the rate of benzene absorption is 32.2%, the performances parameters of the products are lodine value: 981.1 mg/g, the rate of benzene absorption is 30.8%, deducing rate: 98.56% This technology is easy to control and not complicated, furthermore, thc absorption ability of carbon won't be affected, so this study will expanded the use range of activated carbon.