Spatial cross-correlation of undisturbed, natural shortleaf pine stands in northern Georgia
نویسندگان
چکیده
منابع مشابه
Spatial Autocorrelation in Growth of Undisturbed Natural Pine Stands Across Georgia
Moran's I statistic measures the spatial autocorrelation i a random variable measured at discrete locations in space. Permutation procedures test the null hypothesis that the observed Moran's I value is no greater than that expected by chance. The spatial autocorrelation of gross basal area increment is analyzed for undisturbed, naturally regenerated stands in three Georgia forest ypes: 1obloll...
متن کاملRehabilitation of Understocked Loblolly- Shortleaf Pine Stands- III. Natural Stands Cutover 15 Years Previously but Unmanaged
Plots in an unmanaged loblolly-shortleaf pine (Pinus taeda L.-P. echinata Mill.) stand that had been cutover I5 yrpreviously were established to representfive stocking levels: 10, 20, 30, 40, and 50%. The stand was on a good site (site indexLob = 90 ft at 50 yr) and had uneven-aged character. Two competition control treatments (none and individual tree release using herbicide) were also assigne...
متن کاملShortleaf Pine Seed Production in Natural Stands in the Ouachita and Ozark Mountains
Seed production of shortleafpine (Pinus echinata Mill.) was monitoredfrorn 1965 to 1974 to determine the periodicily qf seed crops in both woods-run stands and seed-production areas. One bumper and two good seed crops occurred during the 9-yrperiod. The two largest crops occurred in successive years, then seedproduction was lowfor4 yr before another good crop occurred. Mean annual seedproductio...
متن کاملA Survival Model for Individual Shortleaf Pine Trees in Even-Aged Natural Stands
-A model was developed that predicts the probability of survival for individual shortleaf pine (Pinus echinatu Mill.) trees growing in even-aged natural stands. Data for model development were obtained from the first two measurements of permanently established plots located in natural ly occurring short leaf pine forests on the Ouachita and Ozark National Forests in western Arkansas and eastern...
متن کاملEffects of Reproduction Cutting Method and Hardwood Retention on Shortleaf Pine Seed Production in Natural Stands of the Ouachita Mountains
Shortleaf pine (Pinus echinata Mill.) seed production was monitored for 4 yr in stands harvested by a range of evenand uneven-aged reproduction cutting methods. The fifty-two 35–40 ac stands were distributed throughout the Ouachita Mountains from central Arkansas to eastern Oklahoma. Seed crops were characterized as good, poor, poor, and bumper, averaging 109,000, 18,000, 5,000, and 379,000 sou...
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ژورنال
عنوان ژورنال: Environmental and Ecological Statistics
سال: 1994
ISSN: 1352-8505,1573-3009
DOI: 10.1007/bf00571392