کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9620138 159394 2005 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Patterns of basal area increment, mortality and recruitment were related to logging intensity in subtropical rainforest in Australia over 35 years
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Patterns of basal area increment, mortality and recruitment were related to logging intensity in subtropical rainforest in Australia over 35 years
چکیده انگلیسی
Eight silvicultural treatments were applied to a subtropical rainforest site in Wiangarie State Forest, northern NSW, in the mid 1960s. Tree growth in the plots and ingrowth into the >10 cm diameter at reference height (DRH) category was measured over 35 years. The average basal area in three unlogged plots was 51.5 m2/ha. The basal areas after logging in the silviculturally-treated plots ranged from 58 to 12 m2 representing reductions between 26 and 77%. Increment in the basal area over a wide range of treatments averaged about 0.5 m2 per year after a period of reduced basal area due to post-logging mortality. Basal area had returned to similar levels in the unlogged plots in the less intense treatments after 35 years. The time taken for the patterns of mortality, recruitment and growth to return to levels similar to the unlogged controls was related to the intensity of logging. Recruitment generally increased as the retained basal area decreased. Post-logging mortality increased as the retained basal area decreased except in the two heaviest treatments. Very low intensity (BA removal) treatments had a relatively short-lived and minor effect on stand dynamics. Intense treatments were not necessary to achieve higher growth rates although the duration of increased growth was related to the intensity of treatment. In heavier treatments follow-up operations are needed to prevent stands from being dominated by lianas and early successional species, to the exclusion of the primary rainforest species.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forest Ecology and Management - Volume 218, Issues 1–3, 24 October 2005, Pages 319-328
نویسندگان
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