ĐẶC ĐIỂM CẤU TRÚC RỪNG TỰ NHIÊN PHỤC HỒI TRẠNG THÁI IIIA1, IIIA2 TẠI VƯỜN QUỐC GIA BẾN EN, THANH HÓA

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Thị Huyền Bùi, Thị Thuỳ Dung Đinh

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học - Trường Đại học Hồng Đức, 2023

Mô tả vật lý: tr.75

Bộ sưu tập: Báo, Tạp chí

ID: 339519

Thêm vào giỏ Liên kết toàn văn

Ben En National Park is the home to typical ecosystems of tropical forests, of whichthe restored natural forest ecosystem covers an area of 1,855.44 hectares, accounting for15.8% of the total land area. There are forests of the Garden. Statistical results show thatthe high tree layer in forest status IIIA1 and IIIA2 has the diversity of the species participatingin the composition formula, but there are no ecologically dominant species pants. The forestecosystem is highly sustainable and adaptable to the environment as clearly shown in thehigh tree stratum according to the important index IV%. The number of tree species involvedthe composition formula is very low, only 3-4 species
the species that do not participate in the composition formula account for a high quantity (from 69 to 73 species). The averagetree densities of 2 staties IIIA1 and IIIA2 are 334 trees/ha and 400 trees/ha, the forestreserves are 91.01 m 3 /ha and 129.43 m3 /ha, respectively. The rule of distribution of treenumbers according to peak height in both forest states tends to be left skewed according tothe Weibull distribution. Trees regenerated in both forest states with density from 6,000 to6,640 trees/ha, with good quality accounting for more than 95%, the rate of treesregenerated from seeds was of 98-99%, regenerated plants having growth potentialaccounts for 46.7% - 53% of the total number of regenerated trees.Vườn Quốc gia Bến En là nơi có các hệ sinh thái đặc trưng của rừng nhiệt đới. Trongđó, hệ sinh thái rừng tự nhiên phục hồi có diện tích 1.855,44 ha, chiếm 15,8% tổng diện tíchđất có rừng của Vườn. Kết quả thống kê cho thấy tầng cây cao trạng thái rừng IIIA1 và IIIA2có số loài tham gia công thức tổ thành khá đa dạng song không có loài ưu thế sinh thái mọcthành quần thụ. Hệ sinh thái rừng ở đây có tính bền vững cao, khả năng thích nghi với môitrường tốt, thể hiện rõ ở thành tầng cây cao tính theo chỉ số quan trọng IV% có số loài câytham gia công thức tổ thành rất thấp, chỉ 3 - 4 loài
các loài không tham gia vào công thứctổ thành chiếm số lượng lớn (từ 69 đến 73 loài). Mật độ cây bình quân của 2 trạng thái IIIA1và IIIA2 lần lượt là 334 cây/ha và 400 cây/ha, trữ lượng rừng tương ứng là 91,01 m3/ha và129,43 m3/ha. Quy luật phân bố số cây theo chiều cao vút ngọn ở cả hai trạng thái rừngcó xu hướng lệch trái theo phân bố Weibull. Cây tái sinh ở cả hai trạng thái rừng mật độtừ 6.000 - 6.640 cây/ha, chất lượng tốt chiếm tỷ lệ lớn hơn 95%, tỷ lệ cây tái sinh từ hạt98 - 99%, cây tái sinh có triển vọng chiếm 46,7% - 53% tổng số cây tái sinh.

1. Đọc trực tuyến

1. Đọc trực tuyến

Tạo bộ sưu tập với mã QR