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研究了杨树（Ｐｏｐｕｌｕｓｓｐｐ．）、刺槐（Ｒｏｂｉｎｉａｐｓｅｕｄｏａｃａｃｉａ）纯林及混交林枯落叶一年中的分解及养分动态变化规律．结果表明，杨树枯落叶分解速度较慢，刺槐较快，而混交林则较杨树有较大提高．在分解过程中，杨树枯落叶Ｎ、Ｐ释放困难，需经过长达１０个月的养分富积过程；刺槐枯落叶Ｎ、Ｐ元素释放较为容易；混交林枯落叶养分富积时间缩短、幅度下降，分解速度加快，说明杨树和刺槐混交有利于枯落叶分解和Ｎ、Ｐ循环．
The decomposition and nutrient dynamics of litter of poplar (Populusspp.), Robinia pseudoacacia (Pseudoacacia) and mixed forest were studied. The results showed that the litter decomposition of poplar was slower and the locust was faster, while that of mixed forest was higher than that of poplar. In the decomposition process, poplar litter N, P release difficult, after up to 10 months of nutrient enrichment process; Robinia pseudoacacia litter N, P elemental release is easier; mixed forest litter nutrient enrichment time is shortened, amplitude Decline, faster decomposition, indicating that hybrid poplar and locust are conducive to litter decomposition and N, P cycle.