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根据长江流域两当河上游的环境特点,提出了自然力与人工辅助相结合的水土保持生态修复技术及建设模式,包括退化林地修复模式、荒山荒坡修复模式、农地修复模式和生态辅助措施。并应用遥感技术和地面人工调查相结合的方法,对生态修复模式实施的效果进行评价。结果表明,两当河退化生态系统修复效果明显,农田退化系统恢复效果显著,植被盖度提高,种群数量增加,生态系统向良性演变。
According to the environmental characteristics of the upper reaches of Liangdang River in the Yangtze River Basin, the authors put forward the ecological restoration techniques and construction modes of soil and water conservation, including the restoration of degraded forestland, the mode of barren hillside restoration, the mode of agricultural land restoration and ecological assistance. Applying the combination of remote sensing technology and artificial ground survey, the effect of ecological restoration mode is evaluated. The results showed that the restoration of the degraded ecosystem in Liangdang River was obvious, the restoration effect of farmland degradation system was significant, the coverage of vegetation increased, the population increased and the ecosystem evolved to a benign.