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VVDENIE

The dissertation is executed on chair of protection of wood of the Moscow timber institute.

The theme urgency is connected with necessity of increase effekyotivnosti forest shelter actions and improvement of protection of woods from wreckers and болезней* This problem is formulated in "the Cores nayopravlenijah economic and social development of the USSR on 1931 - 1935 and for the period till 1990”, confirmed ХХУІ by CPSU congress.

The theme was carried out in respect of NIR chairs lesozashchity MATI on studying of dynamics of number of wood insects and working out noyovyh methods of their account and forecasting

Ordinary pine pililshchik the wrecker of a pine in many countries of Europe and for it preyodelami is known as widely rasproyostranennyj, In our country of flash of mass reproduction pililshchika especially chaoto arise in woods of a steppe zone of the European part of the USSR, including, in pine cultures of the Rostov area where researches were carried out. Despite the big number devoted ordinary pine pililshchiku the works executed since 30-k of years and on present time, interest to this kind not ischeza et. It speaks high degree of its injuriousness, difficult structure of population, it is good vyraaennoj regional and time variability of the life cycle, an insufficient level of scrutiny nekoyotoryh ecological features of a kind. Existing systems nadyozora for ordinary pine pililshchikom and methods of its forecast do not meet modern requirements and do not provide doliyonoj accuracy and reliability of criteria for appointment of protective actions. Maloizuchennym is also lesohozjajstvennoe znayochenie pililshchika without which knowledge it is impossible to solve a question about
Expediency istrebitelnyh actions in it очагах*

Especially these questions for woods of a steppe zone which carry out important sredoformirujushchuju and sredozashchitnuju a role and for which creation are spent considerable средства* have great value

The purpose of researches: to develop on a studying basis ekologiyocheskih features ordinary pine pililshchika and its mutual relations with fodder breed system of supervision of it, metoyody the forecast of dynamics of its number and definition methods stepeyoni forthcoming damage of a pine in очагах* For this purpose were put following problems:

1) to study phenology and some other ecological osoyobennosti pililytsika, including dynamics of its number in rajoyone researches;

2) to obtain data for construction of tables of a survival pililyoshchika in mezhvspyshechnye years, to reveal factors of its death rate and otseyonit their role;

3) to estimate influence pililshchika on fodder breed in the conditions of steppe pine forests;

4) to define spatial distribution pililshchika on different phases of development for the purpose of improvement of methods of supervision and inspection of the centres;

5) to receive indicators for the forecast of dynamics of number poyopuljatsy pililshchika and criteria of appointment of protective actions in its centres.

Scientific novelty исследований* On the basis of the executed works is specified phenology and other ecological features obyknovenyonogo pine pililshchika (fruitfulness, a parity of floors, porayozhennost individuals entomofagami and illnesses, survival rate pililshchiyoka on different phases of development and t.d *) in the conditions of steppe pine forests in mezhvspyshechnye годы*

Factors of death rate are revealed and constructed tablitsy^yzhivanija palilshchika, essentially supplementing understanding of dynamics chislen - nosti populations and their spatial and time variability »

It is offered novej! A method of an estimation of dynamics of number pililshchiyoka by means of factors of balance of population values of these koeffitsie nt e for stages of life cycle consistently replacing each other pililshchika in mekvspyshechnya also are received years.

Specificity of development of flashes of mass reproduction pililshchika in pine forests of a steppe zone is defined and check vozmozhyonostej uses of various indicators for their forecasting is visited.

Reaction of fodder breed pililshchika on needles damage is studied. The probability usyhanija damaged pililshchikom in various degree of trees and pine plantings in a steppe zone is defined. Features of restoration of needles in damaged pililshchiyokom cultures are revealed.

Character of distribution of eggs and cocoons pililshchika in nayosazhdenijah with a chain of working out of new methods of supervision of it is studied.

Practical value of researches. The themes obtained as a result of studying data have formed a basis for system engineering of supervision for ordinary pine pililshchikom and forecasting of dynamics of its number. pililshchika, a new method kratkosrochnoju progyonoza degrees of damages of needles in the centres, criterion consecutive methods of the account of eggs and cocoons are developed for appointment of protective actions. The offered methods can be ispolzovayony in лесхозах1, at stations of protection of wood and at the enterprises в/0 "Lesproekt".

Work approbation. Dissertation substantive provisions dokladyvayolis on annual конференціях following the results of NIR in Moscow lesoyotehnicheskom institute in 1932, 1983 and 1984, on All-Union soyoveshchanii "Rastitelnojadnye animals in biogeotsenoah a land” in ValYOdaj in 1934

Publications, On dissertation materials 4 articles and 2 articles are published is in pechati. -

Structure also twist dissertations. The dissertation consists from vveyodenija, six heads and conclusions, is stated on JO pages mashiyonopisnogo the text, contains 47 tables, 32 drawings-. The list isyopolzovannoj literatures includes 14I the publication, including 65 foreign. Total amount of dissertation Д37 of pages.

I consider as the debt to express profound gratitude to the supervisor of studies to a Dr.Sci.Biol., professor A.I.Vorontsovu, and also employees of chair lesozashchity ML¶J to senior lecturer E.G.Mozolevskoj and the item to scientific employee A.V.Golubevu for valuable consultations.

I.

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Scientific source Harlashina Anna Vladimirovna. Ecology and forestry significance of the common pine sawfly (Diprion L.) in the pine forests of the steppe zone. Thesis for the degree of Candidate of Biological Sciences. Moscow, 1984. 1984

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