Title

西遼河平原不同生境草蘆種群分株生長的可塑性

Translated Titles

Growth Plasticity of Ramets of Phalaris Arundinacea Population in the Different Habitats of Xiliao-River Plains

Authors

田迅(Xun Tian);楊允菲(Yun-Fei Yang)

Key Words

種群生態 ; 草蘆 ; 分株 ; 異速生長 ; 生物量分配 ; 生長可塑性 ; Population ecology ; Phalaris arundinacea ; Ramets ; Heterogeneous speed growth ; Biomass allocations ; Growth plasticity

PublicationName

草地學報

Volume or Term/Year and Month of Publication

12卷1期(2004 / 03 / 01)

Page #

17 - 20

Content Language

簡體中文

Chinese Abstract

對西遼河平原天然草地兩個生境草蘆種群分株的高度、分株生物量、葉生物量、葉鞘生物量、莖生物量5個數量性狀調查統計結果表明,不同生境間存在著極顯著差異,分株在增高和增重上呈異速生長規律,且分株高度較高的草蘆種群隨高度的增加以莖增重為主,分株增重與各器官增重之間也呈較為穩定的異速生長規律;兩個生境分株生物量分配均以葉的比重最大,在42.98%~50.47%之間。分株的高度與生物量之間非等比例增長的相關性規律是草蘆種群適應環境的一種生長可塑性反應。

English Abstract

A field investigation of the Phalaris arundinacea ramet height, ramet biomass, and biomass of leaves, sheaths, and stems was conducted in two different habitats of the natural grassland of Xiliao-River Plains. Significant differences were shown among the statistical figures of the five items compiled. The ramets' increasing height and weight marked a regular pattern of heterogeneous speed growth; and with the ramets' gaining height, their increasing weight was mainly attained by their stems. The increase of the ramets' weight corresponded to the augmented weight of the biomass of leaves, sheaths, and stems in a stable regular pattern of heterogeneous speed growth. A large allocation of the biomass of both Phalaris arundinacea populations was in the leaves, which accounted for 42.98% to 50.47% of the total. The non-equative rate of increase between the ramets' height and biomass weight relfected the growth plasticity of the Phalaris arundinacea population's adaptability to the environment.

Topic Category 生物農學 > 植物學