生物多样性 ›› 2009, Vol. 17 ›› Issue (3): 310-317. DOI: 10.3724/SP.J.1003.2009.09041
• 论文 • 上一篇
罗庆华1, 刘英2, 张立云2
收稿日期:
2009-02-18
接受日期:
2009-05-06
出版日期:
2009-05-20
发布日期:
2009-05-20
基金资助:
Qinghua Luo1, Ying Liu2, Liyun Zhang2
Received:
2009-02-18
Accepted:
2009-05-06
Online:
2009-05-20
Published:
2009-05-20
摘要:
大鲵(Andrias davidianus)是我国特有的两栖动物, 由于栖息地破坏和人类过度捕杀等, 种群数量急剧下降, 被列为我国II类保护野生动物。为探索大鲵人工放流的有效方法, 实现野生大鲵资源增殖, 作者对2002-2008年间在湖南张家界大鲵国家级自然保护区内进行的大鲵人工放流活动与放流效果进行了评估, 并通过对放流点的隐蔽物、水质及饵料生物等生境特点的分析, 探讨影响放流成败的因素。该保护区内共在9处大鲵原栖息地进行了11次人工放流活动, 共放流各种规格大鲵995尾, 其中4次成功。成功放流的大鲵为1-4.5 kg的性成熟个体, 雌雄比在1:1和1:1.5之间, 成功放流点均有良好的后期管理措施, 如建立保护站, 补充饵料等。虽然所选择的多数放流点生境基本能满足大鲵生长和繁殖的要求, 但由于受水质、饵料或安全某一因素的制约, 野生大鲵资源增殖效果不明显, 导致放流失败。因此我们认为依据野生大鲵繁殖的生境特征标准, 科学选择放流地点, 选择性成熟的大鲵在春季放流, 并进行完善的后期跟踪保护, 可能是大鲵人工放流成功和实现资源增殖的有效途径。
罗庆华, 刘英, 张立云 (2009) 张家界大鲵人工放流效果及其影响因素分析. 生物多样性, 17, 310-317. DOI: 10.3724/SP.J.1003.2009.09041.
Qinghua Luo, Ying Liu, Liyun Zhang (2009) Effectiveness of releasing artificially-bred Chinese giant salamander (Andrias davidianus) into the wild in Zhangjiajie, Hunan. Biodiversity Science, 17, 310-317. DOI: 10.3724/SP.J.1003.2009.09041.
序号 Codes | 日/月/年 Date/month/year | 放流地点 Site | 位置Location | 体重 Weight(kg) | 数量 Number (♀:♂) | 管理 Management measures | 放流效果 Effectiveness |
---|---|---|---|---|---|---|---|
1 | 18/12/2002 | 紫草潭Zicaotan | 29°20 ? N 110°27? E | 0.1-0.15; 1-2 | 100 50(4:6) | 无 Absent | 失败: 数量没有增加 Unsuccessful: no increase in number |
2 | 22/12/2004 | 0.1-0.15 | 150 | ||||
3 | 23/12/2004 | 院子 Yuanzi | 29°19? N 109°57? E | 1-2 | 8(4:4) | 建保护站 Setting up a protecting station | 成功: 大鲵苗约增加200尾/年Successful: Increase of 200 new born salamanders a year |
4 | 24/12/2004 | 泉河 Quanhe | 29°28? N 110°13? E | 1-2 | 10(4:6) | 建保护站 Setting up a protecting station | 成功: 较放流前约增加100尾Successful: Increase of 100 salamanders |
5 | 10/12/2005 | 水绕四门Shuiraosimen | 29°21? N 110°37? E | 0.1-0.15 | 120 | 无 Absent | 失败: 数量没有增加Unsuccessful: no increase in number |
6 | 20/04/2006 | 叉角溪Chajiaoxi | 29°45? N 109°51? E | 1-2 | 10(4:6) | 无 Absent | 失败: 数量没有增加Unsuccessful: no increase in number |
7 | 18/04/2007 | 四都坪Sidouping | 29°05? N 110°26? E | 2.5-4.5 | 5(2: 3) | 建保护站, 增殖饵料鱼Setting up a protecting station and supplementing fish | 成功: 大鲵苗增加约100尾/年Successful: Increase of 100 new born salamanders a year |
8 | 20/04/2007 | 向家溪Xiangjiaxi | 29°31? N 110°57? E | 2.5-4.5 | 6(3:3) | 建保护站 Setting up a protecting station | 失败: Unsuccessful: no increase in number |
9 | 23/04/2008 | 0.1-0.2; 2.5-4.5 | 200 8(4:4) | ||||
10 | 22/04/2008 | 黄龙洞Yellow Dragon Cave | 29°22? N 110°37? E | 0.1-0.2; 2.5-4.5 | 300 10(5:5) | 建监测站 Setting up a monitor station | 失败: 数量没有增加Unsuccessful: no increase in number |
11 | 23/04/2008 | 川洞峡Chuandongxia | 29°42? N 109°55? E | 2.5-4.5 | 18(8:10) | 建监测站, 定期投喂鱼肉 Setting up a monitor station and feeding the salamander fish regularly | 成功: 当年繁殖大鲵苗1,125尾Successful: 1,125 baby salamanders reproduced |
表1 张家界大鲵国家自然保护区大鲵人工放流情况及放流效果
Table 1 Activities and effectiveness of releasing artificially-bred Chinese giant salamanders into the wild in Zhangjiajie Giant Salamander National Nature Reserve
序号 Codes | 日/月/年 Date/month/year | 放流地点 Site | 位置Location | 体重 Weight(kg) | 数量 Number (♀:♂) | 管理 Management measures | 放流效果 Effectiveness |
---|---|---|---|---|---|---|---|
1 | 18/12/2002 | 紫草潭Zicaotan | 29°20 ? N 110°27? E | 0.1-0.15; 1-2 | 100 50(4:6) | 无 Absent | 失败: 数量没有增加 Unsuccessful: no increase in number |
2 | 22/12/2004 | 0.1-0.15 | 150 | ||||
3 | 23/12/2004 | 院子 Yuanzi | 29°19? N 109°57? E | 1-2 | 8(4:4) | 建保护站 Setting up a protecting station | 成功: 大鲵苗约增加200尾/年Successful: Increase of 200 new born salamanders a year |
4 | 24/12/2004 | 泉河 Quanhe | 29°28? N 110°13? E | 1-2 | 10(4:6) | 建保护站 Setting up a protecting station | 成功: 较放流前约增加100尾Successful: Increase of 100 salamanders |
5 | 10/12/2005 | 水绕四门Shuiraosimen | 29°21? N 110°37? E | 0.1-0.15 | 120 | 无 Absent | 失败: 数量没有增加Unsuccessful: no increase in number |
6 | 20/04/2006 | 叉角溪Chajiaoxi | 29°45? N 109°51? E | 1-2 | 10(4:6) | 无 Absent | 失败: 数量没有增加Unsuccessful: no increase in number |
7 | 18/04/2007 | 四都坪Sidouping | 29°05? N 110°26? E | 2.5-4.5 | 5(2: 3) | 建保护站, 增殖饵料鱼Setting up a protecting station and supplementing fish | 成功: 大鲵苗增加约100尾/年Successful: Increase of 100 new born salamanders a year |
8 | 20/04/2007 | 向家溪Xiangjiaxi | 29°31? N 110°57? E | 2.5-4.5 | 6(3:3) | 建保护站 Setting up a protecting station | 失败: Unsuccessful: no increase in number |
9 | 23/04/2008 | 0.1-0.2; 2.5-4.5 | 200 8(4:4) | ||||
10 | 22/04/2008 | 黄龙洞Yellow Dragon Cave | 29°22? N 110°37? E | 0.1-0.2; 2.5-4.5 | 300 10(5:5) | 建监测站 Setting up a monitor station | 失败: 数量没有增加Unsuccessful: no increase in number |
11 | 23/04/2008 | 川洞峡Chuandongxia | 29°42? N 109°55? E | 2.5-4.5 | 18(8:10) | 建监测站, 定期投喂鱼肉 Setting up a monitor station and feeding the salamander fish regularly | 成功: 当年繁殖大鲵苗1,125尾Successful: 1,125 baby salamanders reproduced |
放流点 Release sites | 海拔Altitude (m) | 河宽River width (m) | 河深River depth (m) | 底质 Bottom composition | 河床类型River bed type | 河岸组成Bank | 两岸坡度Gradient (°) | 两岸植被类型(覆盖度) Vegetation type (coverage) | 流速 Flow velocity (m/s) | |
---|---|---|---|---|---|---|---|---|---|---|
成功点 Successful | ||||||||||
院子 Yuanzi | 400 | 8.12 | 1.95 | 卵石 Gravel | 平底型 Flat | 石壁 Stony bank | 65 | 灌木叢 Shrub (>75%) | 0.22 | |
泉河 Quanhe | 330 | 7.78 | 1.41 | 卵石 Gravel | 不规则型Irregular | 石壁 Stony bank | 45 | 灌木丛 Shrub (>75%) | 0.36 | |
四都坪 Sidouping | 390 | 8.26 | 1.16 | 卵石 Gravel | 不规则型Irregular | 石壁、土山Stony bank | 30 | 灌木丛 Shrub (>75%) | 0.21 | |
川洞峡Chuandongxia | 500 | 5.17 | 0.75 | 礁石、卵石与块石 Rock, gravel and block | 不规则型Irregular | 石壁 Stony bank | 65 | 灌木丛 Shrub (50-75%) | 0.42 | |
平均值 Average | 405±70 | 7.33±1.46 | 1.32±0.50* | 51±17 | 0.30±0.10 | |||||
失败点Unsuccessful | ||||||||||
紫草潭 Zicaotan | 480 | 5.38 | 0.91 | 卵石、礁石Gravel and rock | 不规则型Irregular | 石壁 Stony bank | 85 | 灌木丛 Shrub (>75%) | 0.48 | |
水绕四门Shuiraosimen | 430 | 11.84 | 0.37 | 卵石、块石Gravel and block | 平底型 Flat | 石壁 Stony bank | 80 | 针阔混交林Coniferous and broadleaved forest (>75%) | 0.22 | |
叉角溪 Chajiaoxi | 430 | 6.41 | 0.92 | 卵石、礁石Gravel and rock | 不规则型Irregular | 石壁 Stony bank | 45 | 灌木丛 Shrub (50-75%) | 0.41 | |
向家溪Xiangjiaxi | 380 | 3.12 | 0.78 | 卵石、礁石Gravel and rock | 不规则型Irregular | 石壁、土山Stony bank and soil hill | 65 | 灌木丛 Shrub (>75%) | 0.45 | |
黄龙洞 Yellow Dragon Cave | 260 | 2.81 | 0.34 | 礁石、块石Rock and block | 平底型 Flat | 石壁、土山Stony bank and soil hill | 65 | 针阔混交林Coniferous and broadleaved forest (>75%) | 0.32 | |
平均值 Average | 396±84 | 5.91±3.64 | 0.66±0.29* | 68±16 | 0.38±0.11 |
表2 放流点附近河段生境特征
Table 2 The habitat characteristics near the release sites
放流点 Release sites | 海拔Altitude (m) | 河宽River width (m) | 河深River depth (m) | 底质 Bottom composition | 河床类型River bed type | 河岸组成Bank | 两岸坡度Gradient (°) | 两岸植被类型(覆盖度) Vegetation type (coverage) | 流速 Flow velocity (m/s) | |
---|---|---|---|---|---|---|---|---|---|---|
成功点 Successful | ||||||||||
院子 Yuanzi | 400 | 8.12 | 1.95 | 卵石 Gravel | 平底型 Flat | 石壁 Stony bank | 65 | 灌木叢 Shrub (>75%) | 0.22 | |
泉河 Quanhe | 330 | 7.78 | 1.41 | 卵石 Gravel | 不规则型Irregular | 石壁 Stony bank | 45 | 灌木丛 Shrub (>75%) | 0.36 | |
四都坪 Sidouping | 390 | 8.26 | 1.16 | 卵石 Gravel | 不规则型Irregular | 石壁、土山Stony bank | 30 | 灌木丛 Shrub (>75%) | 0.21 | |
川洞峡Chuandongxia | 500 | 5.17 | 0.75 | 礁石、卵石与块石 Rock, gravel and block | 不规则型Irregular | 石壁 Stony bank | 65 | 灌木丛 Shrub (50-75%) | 0.42 | |
平均值 Average | 405±70 | 7.33±1.46 | 1.32±0.50* | 51±17 | 0.30±0.10 | |||||
失败点Unsuccessful | ||||||||||
紫草潭 Zicaotan | 480 | 5.38 | 0.91 | 卵石、礁石Gravel and rock | 不规则型Irregular | 石壁 Stony bank | 85 | 灌木丛 Shrub (>75%) | 0.48 | |
水绕四门Shuiraosimen | 430 | 11.84 | 0.37 | 卵石、块石Gravel and block | 平底型 Flat | 石壁 Stony bank | 80 | 针阔混交林Coniferous and broadleaved forest (>75%) | 0.22 | |
叉角溪 Chajiaoxi | 430 | 6.41 | 0.92 | 卵石、礁石Gravel and rock | 不规则型Irregular | 石壁 Stony bank | 45 | 灌木丛 Shrub (50-75%) | 0.41 | |
向家溪Xiangjiaxi | 380 | 3.12 | 0.78 | 卵石、礁石Gravel and rock | 不规则型Irregular | 石壁、土山Stony bank and soil hill | 65 | 灌木丛 Shrub (>75%) | 0.45 | |
黄龙洞 Yellow Dragon Cave | 260 | 2.81 | 0.34 | 礁石、块石Rock and block | 平底型 Flat | 石壁、土山Stony bank and soil hill | 65 | 针阔混交林Coniferous and broadleaved forest (>75%) | 0.32 | |
平均值 Average | 396±84 | 5.91±3.64 | 0.66±0.29* | 68±16 | 0.38±0.11 |
放流点 Release sites | 洞穴数No. of dens | 洞口宽Entrance width (m) | 洞口高Entrance height (m) | 水深 Water depth (m) | 流速 Flow velocity (m/s) | 洞底组成 Substrate composition | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
成功点 Successful | ||||||||||||||
院子 Yuanzi | 4 | 0.67-3.25 | 0.52-1.45 | 0.34-0.62 | 0.22-0.32 | 沙石、卵石与礁石 Sand, gravel and rock | ||||||||
泉河 Quanhe | 3 | 0.23-0.95 | 0.25-1.15 | 0.12-0.37 | 0.15-0.31 | 卵石或礁石 Gravel and rock | ||||||||
四都坪 Sidouping | 4 | 0.21-1.27 | 0.29-0.87 | 0.21-0.52 | 0.20-0.32 | 卵石与礁石 Gravel and rock | ||||||||
川洞峡 Chuandongxia | 2 | 0.53-1.15 | 0.72-2.16 | 0.21-0.53 | 0.12-0.31 | 块石或礁石 Block and rock | ||||||||
平均值 Average | 3±1 | 1.11±0.76 | 0.93±0.65* | 0.37±0.13* | 0.24±0.07 | |||||||||
失败点 Unsuccessful | ||||||||||||||
紫草潭 Zicaotan | 3 | 0.23-2.17 | 0.58-1.59 | 0.28-0.70 | 0.11-0.34 | 卵石或礁石 Gravel and rock | ||||||||
水绕四门 Shuiraosimen | 3 | 0.54-1.28 | 0.37-2.51 | 0.21-0.53 | 0.12-0.31 | 卵石或礁石 Gravel and rock | ||||||||
叉角溪 Chajiaoxi | 3 | 0.27-0.98 | 0.26-1.53 | 0.23-0.47 | 0.16-0.41 | 卵石或礁石 Gravel and rock | ||||||||
向家溪 Xiangjiaxi | 3 | 0.27-0.75 | 0.29-0.81 | 0.36-1.09 | 0.21-0.42 | 卵石或礁石 Gravel and rock | ||||||||
黄龙洞 Yellow Dragon Cave | 2 | 0.71-1.41 | 1.21-2.62 | 0.42-0.62 | 0.11-0.41 | 块石或礁石 Block and rock | ||||||||
平均值 Average | 3±0 | 0.88±0.55 | 1.24±0.79* | 0.52±0.25* | 0.27±0.11 |
表3 放流点附近洞穴特征
Table 3 The features of dens near the release sites
放流点 Release sites | 洞穴数No. of dens | 洞口宽Entrance width (m) | 洞口高Entrance height (m) | 水深 Water depth (m) | 流速 Flow velocity (m/s) | 洞底组成 Substrate composition | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
成功点 Successful | ||||||||||||||
院子 Yuanzi | 4 | 0.67-3.25 | 0.52-1.45 | 0.34-0.62 | 0.22-0.32 | 沙石、卵石与礁石 Sand, gravel and rock | ||||||||
泉河 Quanhe | 3 | 0.23-0.95 | 0.25-1.15 | 0.12-0.37 | 0.15-0.31 | 卵石或礁石 Gravel and rock | ||||||||
四都坪 Sidouping | 4 | 0.21-1.27 | 0.29-0.87 | 0.21-0.52 | 0.20-0.32 | 卵石与礁石 Gravel and rock | ||||||||
川洞峡 Chuandongxia | 2 | 0.53-1.15 | 0.72-2.16 | 0.21-0.53 | 0.12-0.31 | 块石或礁石 Block and rock | ||||||||
平均值 Average | 3±1 | 1.11±0.76 | 0.93±0.65* | 0.37±0.13* | 0.24±0.07 | |||||||||
失败点 Unsuccessful | ||||||||||||||
紫草潭 Zicaotan | 3 | 0.23-2.17 | 0.58-1.59 | 0.28-0.70 | 0.11-0.34 | 卵石或礁石 Gravel and rock | ||||||||
水绕四门 Shuiraosimen | 3 | 0.54-1.28 | 0.37-2.51 | 0.21-0.53 | 0.12-0.31 | 卵石或礁石 Gravel and rock | ||||||||
叉角溪 Chajiaoxi | 3 | 0.27-0.98 | 0.26-1.53 | 0.23-0.47 | 0.16-0.41 | 卵石或礁石 Gravel and rock | ||||||||
向家溪 Xiangjiaxi | 3 | 0.27-0.75 | 0.29-0.81 | 0.36-1.09 | 0.21-0.42 | 卵石或礁石 Gravel and rock | ||||||||
黄龙洞 Yellow Dragon Cave | 2 | 0.71-1.41 | 1.21-2.62 | 0.42-0.62 | 0.11-0.41 | 块石或礁石 Block and rock | ||||||||
平均值 Average | 3±0 | 0.88±0.55 | 1.24±0.79* | 0.52±0.25* | 0.27±0.11 |
放流点 Release sites | 水温Tempe- rature (℃) | 浊度Turbidity (°) | pH | 溶解氧DO (mg/L) | 化学耗氧量COD (mg/L) | 总硬度 Hardness (CaCO3 mg/L) | 总氮 TN (mg/L) | 总磷 TP (mg/L) | 硫化物 Sulfid (mg/L) | 大肠菌群Coliform (个/L) | |||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
成功点 Successful | |||||||||||||||
| 院子 Yuanzi | 20.1 | 6 | 6.86 | 7.47 | 5.56 | 283.28 | 0.03 | 0.02 | 0.02 | 1,800 | ||||
泉河 Quanhe | 19.8 | 7 | 7.14 | 6.58 | 2.84 | 100.81 | 0.03 | 0.01 | 0.06 | 940 | |||||
四都坪 Sidouping | 21.2 | 8 | 7.05 | 7.51 | 3.09 | 78.02 | 0.03 | 0.03 | 0.08 | 9,200 | |||||
川洞峡 Chuandongxia | 18.1 | 8 | 7.61 | 5.60 | 3.98 | 130.13 | 0.02 | 0.02 | 0.02 | 1,100 | |||||
平均值 Average | 19.8± 1.3 | 7±1 | 7.17± 0.32* | 6.79± 0.90 | 3.87± 1.23 | 148.06± 92.64 | 0.03± 0.01 | 0.02± 0.01 | 0.05± 0.03 | 3,260± 3,977 | |||||
失败点 Unsuccessful | |||||||||||||||
紫草潭 Zicaotan | 18.2 | 7 | 8.15 | 6.68 | 8.52 | 90.31 | 0.41 | 0.07 | 0.03 | 5,400 | |||||
水绕四门 Shuiraosimen | 17.6 | 6 | 8.10 | 8.11 | 7.15 | 91.43 | 0.18 | 0.05 | 0.02 | 2,200 | |||||
叉角溪 Chajiaoxi | 19.8 | 7 | 7.14 | 7.58 | 3.48 | 152.69 | 0.03 | 0.01 | 0.35 | 940 | |||||
向家溪 Xiangjiaxi | 19.2 | 2 | 8.43 | 7.10 | 1.31 | 148.45 | 0.03 | 0.05 | 0.03 | 940 | |||||
黄龙洞 Yellow Dragon Cave | 18.2 | 8 | 8.16 | 8.05 | 5.68 | 145.61 | 0.23 | 0.04 | 0.03 | 940 | |||||
平均值 Average | 18.6± 0.9 | 6±2 | 8.00± 0.50* | 7.50± 0.62 | 5.23± 2.88 | 125.70± 31.90 | 0.18± 0.16 | 0.04± 0.02 | 0.09± 0.14 | 2,084± 1,932 |
表4 放流点水质状况
Table 4 Water quality of the release sites
放流点 Release sites | 水温Tempe- rature (℃) | 浊度Turbidity (°) | pH | 溶解氧DO (mg/L) | 化学耗氧量COD (mg/L) | 总硬度 Hardness (CaCO3 mg/L) | 总氮 TN (mg/L) | 总磷 TP (mg/L) | 硫化物 Sulfid (mg/L) | 大肠菌群Coliform (个/L) | |||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
成功点 Successful | |||||||||||||||
| 院子 Yuanzi | 20.1 | 6 | 6.86 | 7.47 | 5.56 | 283.28 | 0.03 | 0.02 | 0.02 | 1,800 | ||||
泉河 Quanhe | 19.8 | 7 | 7.14 | 6.58 | 2.84 | 100.81 | 0.03 | 0.01 | 0.06 | 940 | |||||
四都坪 Sidouping | 21.2 | 8 | 7.05 | 7.51 | 3.09 | 78.02 | 0.03 | 0.03 | 0.08 | 9,200 | |||||
川洞峡 Chuandongxia | 18.1 | 8 | 7.61 | 5.60 | 3.98 | 130.13 | 0.02 | 0.02 | 0.02 | 1,100 | |||||
平均值 Average | 19.8± 1.3 | 7±1 | 7.17± 0.32* | 6.79± 0.90 | 3.87± 1.23 | 148.06± 92.64 | 0.03± 0.01 | 0.02± 0.01 | 0.05± 0.03 | 3,260± 3,977 | |||||
失败点 Unsuccessful | |||||||||||||||
紫草潭 Zicaotan | 18.2 | 7 | 8.15 | 6.68 | 8.52 | 90.31 | 0.41 | 0.07 | 0.03 | 5,400 | |||||
水绕四门 Shuiraosimen | 17.6 | 6 | 8.10 | 8.11 | 7.15 | 91.43 | 0.18 | 0.05 | 0.02 | 2,200 | |||||
叉角溪 Chajiaoxi | 19.8 | 7 | 7.14 | 7.58 | 3.48 | 152.69 | 0.03 | 0.01 | 0.35 | 940 | |||||
向家溪 Xiangjiaxi | 19.2 | 2 | 8.43 | 7.10 | 1.31 | 148.45 | 0.03 | 0.05 | 0.03 | 940 | |||||
黄龙洞 Yellow Dragon Cave | 18.2 | 8 | 8.16 | 8.05 | 5.68 | 145.61 | 0.23 | 0.04 | 0.03 | 940 | |||||
平均值 Average | 18.6± 0.9 | 6±2 | 8.00± 0.50* | 7.50± 0.62 | 5.23± 2.88 | 125.70± 31.90 | 0.18± 0.16 | 0.04± 0.02 | 0.09± 0.14 | 2,084± 1,932 |
放流点 Release sites | 鱼类 Fish | 蛙类 Frog | 蟹类 Crab | 虾类 Shrimp | 水生昆虫 Aquatic insect | 合计 Total | |
---|---|---|---|---|---|---|---|
成功点 Successful | |||||||
院子 Yuanzi | 10,475 | 7,076 | 5,875 | 9,325 | 5,698 | 38,449 | |
泉河 Quanhe | 6,889 | 4,863 | 3,837 | 7,914 | 2,395 | 25,898 | |
四都坪 Sidouping | 10,723 | 5,789 | 1,921 | 3,542 | 3,080 | 25,055 | |
川洞峡 Chuandongxia | 8,566 | 7,806 | 1,707 | 2,811 | 5,558 | 26,448 | |
平均值 Average | 9,163±1,796 | 6,384±1,313 | 3,335±1,945 | 5,898±3,209 | 4,183±1,693 | 28,962±6,350 | |
失败点 Unsuccessful | |||||||
紫草潭 Zicaotan | 18,358 | 8,381 | 2,199 | 5,097 | 20,578 | 54,613 | |
水绕四门 Shuiraosimen | 12,876 | 6,687 | 2,379 | 6,658 | 12,072 | 40,672 | |
叉角溪 Chajiaoxi | 10,358 | 5,358 | 2,936 | 6,264 | 1,738 | 26,654 | |
向家溪 Xiangjiaxi | 8,451 | 9,061 | 4,588 | 9,076 | 2,438 | 33,614 | |
黄龙洞 Yellow dragon cave | 4,968 | 3,486 | 2,175 | 3,816 | 3,233 | 17,678 | |
平均值 Average | 11,002±5,024 | 6,595±2,262 | 2,855±1,016 | 6,182±1,961 | 8,012±8,080 | 34,646±14,034 |
表5 放流点大鲵的饵料生物量(mg/m2)
Table 5 The biomass of food organisms for Chinese giant salamander at the release sites (mg/m2)
放流点 Release sites | 鱼类 Fish | 蛙类 Frog | 蟹类 Crab | 虾类 Shrimp | 水生昆虫 Aquatic insect | 合计 Total | |
---|---|---|---|---|---|---|---|
成功点 Successful | |||||||
院子 Yuanzi | 10,475 | 7,076 | 5,875 | 9,325 | 5,698 | 38,449 | |
泉河 Quanhe | 6,889 | 4,863 | 3,837 | 7,914 | 2,395 | 25,898 | |
四都坪 Sidouping | 10,723 | 5,789 | 1,921 | 3,542 | 3,080 | 25,055 | |
川洞峡 Chuandongxia | 8,566 | 7,806 | 1,707 | 2,811 | 5,558 | 26,448 | |
平均值 Average | 9,163±1,796 | 6,384±1,313 | 3,335±1,945 | 5,898±3,209 | 4,183±1,693 | 28,962±6,350 | |
失败点 Unsuccessful | |||||||
紫草潭 Zicaotan | 18,358 | 8,381 | 2,199 | 5,097 | 20,578 | 54,613 | |
水绕四门 Shuiraosimen | 12,876 | 6,687 | 2,379 | 6,658 | 12,072 | 40,672 | |
叉角溪 Chajiaoxi | 10,358 | 5,358 | 2,936 | 6,264 | 1,738 | 26,654 | |
向家溪 Xiangjiaxi | 8,451 | 9,061 | 4,588 | 9,076 | 2,438 | 33,614 | |
黄龙洞 Yellow dragon cave | 4,968 | 3,486 | 2,175 | 3,816 | 3,233 | 17,678 | |
平均值 Average | 11,002±5,024 | 6,595±2,262 | 2,855±1,016 | 6,182±1,961 | 8,012±8,080 | 34,646±14,034 |
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