论文部分内容阅读
通过5年的群落野外调查,研究分析了重庆缙云山退化生态系统5个不同恢复演替阶段群落小气候演替变化规律.在外部气候条件一致情况下,群落演替是群落内发光强度、气温、极温、湿度变化的主导因素;群落小气候明显表现群落演替进程的外部光强条件是:发光强度≥216600lx,气温<10℃或>20℃,大气相对湿度≤7325%;小气候指标均值在演替轴上的单向相对变化速率V及其均值V能有效地指示群落气候恢复速度;系统V值:光衰减率953%↑,气温524%↓(对外界升温时刻),极温振幅252%↓,湿度振幅183%↑;小气候指标对群落恢复演替的敏感性:极温振幅>湿度振幅>光衰减率>气温.
Through five years of field investigation, the change of microclimate succession in five different restoration succession stages of degraded ecosystems in Jinyun Mountain of Chongqing was studied. Under the condition of the same external climate, the community succession is the dominant factor of the luminescence intensity, temperature, extreme temperature and humidity in the community. The external light conditions that the community microclimate obviously shows the succession process of the community are as follows: luminescence intensity≥216600lx, temperature < 10 ℃ or> 20 ℃, the relative humidity of the atmosphere is less than or equal to 7325%. The unidirectional relative change rate V and the mean value V of the mean of microclimate index on the successional axis can effectively indicate the climate recovery speed of the community. System V value: light attenuation Rate of 953% ↑, temperature of 524% ↓ (temperature rise time), temperature amplitude 25 2% ↓, humidity amplitude 18 3% ↑; microclimate indicators of community succession recovery sensitivity: extreme temperature Amplitude> Humidity Amplitude> Light Decay Rate> Air Temperature.