Comparison Of Functional Traits In Semi-humid Evergreen Broad-leaved Forest In Western Hill Of Kunming

Plant through regulation or change the functional traits to adapt the environment, plant functional traits can show the plant adaptation to the external environment objective. Through the combination of plant traits along a resource gradient where the dynamic changes to adapt to the environment, the combination of multiple traits can determine the relationship between plants, it also determine interactions among the plant species and community and ecosystem. Vegetation ecosystem is carried out through a combination of traits, different trait combinations linked characteristics of different ecosystems. Leaf traits are closely related to plant access to resources, energy and water balance, also with the survival strategy of plants is closely related to mainly reflect the traits of plant stem grows rate, resilience. Plant height reflects the many aspects of plant adaptation and balance, has important ecological significance, associated with his competitiveness of its anti-interference ability, tolerance, to avoid pressure on the environment.In this paper,59 species of woody plants from semi-humid evergreen broad-leaved forest in Western Hill of Kunming is the research object, we selected the plant Height(H), leaf area(S), leaf dry mass(LDM), specific leaf area(SLA), stem specific density(SSD), stem dry matter content(TDMC), stem water content(SWC), total-7 functional traits were studied. The research was focused on following (1) The relationships among 7 functional traits;(2) The change trends of 7 functional traits.The results showed that:(1) S with LDM and TWC, LDM with TWC have a extremely significant positive correlation; H with TWC, SSD with TDMC have a significant positive correlation. SSD with SLA have a very significant negative correlation; SLA with H and LDM have a significant negative correlation. H with S,LDM,SSD, SSD with LDM, TDMC with H,S,LDM,SLS have not correlation.(2) Sub-humid evergreen broad-leaved forest community in Western Hill of central Yunnan is typical. The seven functional traits, LDM and SLA was significantly negatively correlated; S with TWC have a extremely significant positive correlation, indicating that the semi-humid evergreen broad-leaved forest in Western Hill has a relatively strong woody forest water balance. SSD and TDMC have a significant positive correlation, indicating that the plants with more SSD and TDMC have higher resilience; conversely, the plants with less SSD and TDMC have potential for high growth rate.SSD and SLA have an extremely significant negative correlation, indicating the plants with big SLA and low SSD have high productivity and growth; but the plants which with small SLA and big SSD have higher resilience. H and SLA have a significant negative correlation, means that semi-humid evergreen broad-leaved forest in Western Hill, SLA increased with the reduction of H, which indicated that the plants have strong tolerance and adaptability to the environment.(3) The results showed that H,S,LDM,SLA varies greatly, TDMC and TWC followed by, the SSD range than the minimum. The results indicated the Western Hill semi-humid evergreen broad-leaved forest that the H,S,LDM,SLA of intensity of competition between plants is the most sensitive. H and TDMC can reflect the western hill semi-humid broad-leaved forest woody plants in response to disturbances to some extent.