Collins N M
Termite Research Project, Agricultural Research Station, PMB 101, Mokwa via Jebba, Nigeria.
Oecologia. 1977 Jun;28(2):163-175. doi: 10.1007/BF00345252.
This study examines the woody vegetation, annual leaf-fall and annual wood-fall in Southern Guinea savanna near Mokwa, Nigeria. There were 1425±402 (95% limits) trees ha of which Caesalpiniaceous legumes made up 53%. Annual leaf-fall was 2.387 t ha a equivalent to 11,238,932 kcal ha a and was highly seasonal, peaking from November to February, with a maximum in January after the annual bush fires. Annual wood-fall was 1.391 t ha a equivalent to 7,598,256 kcal ha a and was less seasonal but with two peaks, one from January to March after the fires and another from May to July in the rainy season.The litter-fall data currently available from West Africa are reviewed and indicate a negative correlation between litterfall and latitude (P<0.001). Litter production is found to be positively correlated with rainfall (P<0.001) and it is suggested that seasonal distribution of rainfall may also be a factor contributing to the limits of litter production.
本研究调查了尼日利亚莫夸附近几内亚南部稀树草原的木本植被、年落叶量和年木材凋落量。每公顷有1425±402棵树（95%置信区间），其中苏木科豆科植物占53%。年落叶量为2.387吨/公顷·年，相当于11238932千卡/公顷·年，且具有高度季节性，11月至2月达到峰值，在每年的丛林大火之后，1月份落叶量最大。年木材凋落量为1.391吨/公顷·年，相当于7598256千卡/公顷·年，季节性较弱，但有两个峰值，一个在火灾后的1月至3月，另一个在雨季的5月至7月。对目前可获得的西非凋落物数据进行了综述，结果表明凋落物量与纬度呈负相关（P<0.001）。发现凋落物产量与降雨量呈正相关（P<0.001），并且有人提出降雨的季节分布也可能是导致凋落物产量受限的一个因素。
