The Growth Pattern of <i>Chamaecyparis obtuse</i>Stand along Longevity in Gyeongnam Province, South Korea

Tree growth is affected by environmental factors, climate condition and tree age. The objective of this study was to evaluate the growth patterns of Chamaecyparis obtusa (C. obtusa) stand in the Gyeongnam province. Data was collected from two cities and one county by using sample quadrats of 20 * 20 m. A total of 11 quadrats were used to collect tree height, diameter at the breast height (DBH), annual growth rings and soil data. The data analysis of soil moisture content, pH, organic matter (%), EC (cmol + /kg of soil), and available phosphorous was conducted. Growth ring was analyzed by using computer based software and the ages of the trees were identified. Average growth of height and DBH was computed from the surveyed data and annual growth of each tree was assessed by computer based reading of annual growth rings. The results of the study revealed that tree growth showed a reducing trend along the longevity. It was identified that soil pH, age, variation in annual average temperature, and altitude were the main factors related with growth of C. obtusa trees along the life of the stand.

埃塞俄比亚自然保护地建设管理现状及启示

自然保护地的有效管理对于保护生物多样性、维持生态系统平衡和保障人类可持续发展具有重要意义。文中以埃塞俄比亚自然保护地为研究对象,在介绍其自然保护地建设概况的基础上,从管理政策、管理体制和相关机构3个方面梳理其自然保护地管理体系,围绕面临的挑战和潜在的机遇分析其自然保护地建设管理现状,最后从积极探索保护地新型治理机制、建立健全特许经营制度和重视社区共管机制建设3个方面总结埃塞俄比亚自然保护地建设管理对我国的启示。