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Study On Apocheima Cinerarius Erschoff Population Ecology In He Tian Area

Posted on:2005-12-04Degree:MasterType:Thesis
Country:ChinaCandidate:H YuFull Text:PDF
GTID:2133360125459345Subject:Zoology
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Proceed from whole area ecology in He Tian, Apocheima cinerarius Erschoff was studied onPopulation biology and ecology, The results is follow: Apocheima cinerarius Erschoff lives in soil layer 20 ~ 50cm beneath surface in pupaein winter,When soil temperature rises to 0 癈 in spring, its begin pupating.The femaleinsect emergence is early slightly than male insect. The bisexual ratio is 1:0.7145. Aggregated extent index and geostatistics methods were used to analyze the spatialdistribution of adults, egg masses, 1st instar larva,and both reach a conclusion ofaggregated distribution. The correlation distance of Apocheima cinerarius Erschoff adults ,egg masses ,1st instar larva is: 49.18m,18m, 14.4m respectively,existing aeolotropismwith the Statistics of geostatistics method. The spatial distribution patterns of Apocheima cinerarius Erschoff adults on the bigdimensions in He Tian were aggregated in 2001~2003 year,The centers of aggregation anddensity grades, however, were changed with years. In general, Apocheima cinerarius Erschoffdensity grades were higher in any forest spots of Pi Shan County and Luo Pu County, showedaggregated distribution and were spreading towards around. The Markov model and GIS methods were used to forecast the dynamic changes of Apocheimacinerarius Erschoff population. The results in 2005 showed that 10th grade area rate is4.61 %, 9th grade area rate is 4.41 % , 8th grade area rate is 10.10% in serious area, andthe mainly grade is 4th rating 29.3 %. The Apocheima cinerarius Erschoff population extend dynamic in Pi Shan County wereanalized by GIS technology,and the result show that Apocheima cinerarius Erschoff happenarea expand gradually from 1997 to 2000. The happen area is 6.461 km in 1997 to 131.172 2km in 2000, increased by 20.3 times in 4 years, and expand area is 31.678 km 2every years; 2The occurrence degrees were divided into four grades. Each occurrence grade fluctuatesannually, but total be placed in the stable. The area of 1st grade and 2nd grade is bigger,and the 4th grade is smaller; Seeing from the spot expanded condition. The spots in 1997and 1998 were independent. The biggest spot diameter is 14.9 km and the minimum spot diameteris 1.1 km in 1997. The shortest distance between the two spot is 27.1 km. In 1998, the biggestspot diameter is 17.8km and the minimum spot diameter is 7.9km. The shortest distance betweenthe two spot is 16.5km. The biggest expand distance is 5.3 km from 1997 to 1998 expandedto whole Pi Shan County region and mixed a spot in 1999 and 2000. The expand area is thebiggest from 1998 to 1999. The expanding area is 73.88 km 2, the biggest expand distanceis 47.20 km. The index of population tendency(I) in Apocheima cinerarius Erschoff life table of themain varieties of trees in He Tian showed that Xinjiang poplar s I number is 8.7483, Lombardypoplar' is 5.3072, mulberry, purple medic, Elaeagnus angustifolia L., osier, pear is 18.5164,32.0970, 8.4460, 1.2823, 10.4867 respectively, and Apocheima cinerarius Erschoff can notsurvival in almond. Analyzed from Apocheima cinerarius Erschofflife table, the death rateof larval period is tallest and the birds prey is the important factors. IIUsing geostatistics, it was imitated that the vibration light trap interfere with Apocheimacinerarius Erschoff male's spatial movement process in different raying time. The resultshowed that range of trap and kill is about 113m. It can gather and kill male Apocheimacinerarius Erschoffm effectively and the EIPC of vibration light is 0.2862. So vibrationlight has strongly control function.
Keywords/Search Tags:Apocheima cinerarius Erschoff, population dynamic, spatial, pattern GISgeostatistics
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