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当前位置: 首页 > 文章 > 四川王朗自然保护区原始冷杉林粗木质残体的储水潜力评估 水土保持学报 2010,24 (5) 126-129+134
Position: Home > Articles > Assessment of Coarse Woody Debris’s Water Storage Potential in Primitive Fir Forest in Wanglang National Nature Reserve Journal of Soil and Water Conservation 2010,24 (5) 126-129+134

四川王朗自然保护区原始冷杉林粗木质残体的储水潜力评估

作  者：
王应军;鲜骏仁;杨理艳
单  位：
四川农业大学资源环境学院
关键词：
粗木质残体;原始冷杉林;储水量;吸水速率;王朗自然保护区
摘  要：
为了解西南亚高山原始森林中粗木质残体(CWD)的储水能力,采用样带法调查了位于四川王朗自然保护区原始岷江冷杉林中CWD的储量,运用浸泡模拟法研究了CWD的吸水过程和储水能力。结果表明:CWD的密度随着腐烂的加剧而降低,其储水能力的变化则相反。CWD的吸水过程表现为储水量均随时间的推移迅速增加,2h后储水量增加开始变缓、吸水速率逐渐降低;储水量(Q,g/cm3)和吸水速率(S,g/(cm3.h))与浸泡时间(t)关系均可用Q=aln(t)-b和S=c t-d来进行拟合。样带中CWD的体积和储水能力为(16.864 3±0.954 9)m3/hm2和(4.961 4±0.165 9)t/hm2,相当于增加降雨(0.496 1±0.016 6)mm,I级CWD是体积和储水能力的主体(占总体的60.55%和43.26%);王朗自然保护区的原始冷杉林中CWD体积为55 039.17m3,最大储水能力为13 318.3t。
译  名：
Assessment of Coarse Woody Debris’s Water Storage Potential in Primitive Fir Forest in Wanglang National Nature Reserve
作  者：
WANG Ying-jun,XIAN Jun-ren,YANG Li-yan (College of Resources and Environment of Sichuan Agricultural University,Yaan,Sichuan 625014)
关键词：
coarse woody debris;primitive fir forest;water storage and water absorbing rate;Wanglang nature reserve
摘  要：
To understand the storage capacity of coarse woody debris(CWD) in the primeval forest in south-western subalpine,we have a investigation on reserves of CWD in primitive Minjiang fir forest in Wanglang national nature reserve by belt transect method,and also use simulated immersion to study water absorption process and water storage capacity of CWD.The results showed that: the density of CWD decreases with intensify of decay,the change of its storage capacity is the opposite.The water absorption process of CWD is as follow: water storage increases rapidly over time,and the increase slows down after 2 hours,water absorbing rate decreases gradually as well;Q=a ln (t)-b and S=c t-d can be used to fit relationships between water storage(Q,g/cm3) or water absorbing rate(S,g/(cm3·h)) and soak time.In the belt transect,the volume and water storage capacity of CWD are (16.864 3±0.954 9) m3/hm2 and (4.961 4±0.165 9) t/hm2,respectively(equivalent to increased rainfall 0.496 1±0.016 6 mm).Grade I of CWD is the main in volume and water storage capacity(accounting for 60.55% and 43.26% overall);in the primitive fir forest in Wanglang national nature reserve,the volume of CWD is 55 039.17 m3 while the maximum storage capacity is 13 318.3 t.

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