基于野外痕迹点和GIS技术定量评估步道对大熊猫活动的影响

doi:10.3724/SP.J.1003.2012.07231

生物多样性 ›› 2012, Vol. 20 ›› Issue (4): 420-426. DOI: 10.3724/SP.J.1003.2012.07231 cstr: 32101.14.SP.J.1003.2012.07231

基于野外痕迹点和GIS技术定量评估步道对大熊猫活动的影响

龚明昊¹^,³^,^*(), 侯盟¹, 蔺琛¹, 宋延龄², 欧阳志云³

1 国家林业局调查规划设计院, 北京 100714
2 中国科学院动物研究所, 北京 100101
3 中国科学院生态环境研究中心, 北京 100085

收稿日期:2011-12-15 接受日期:2012-05-14 出版日期:2012-07-20 发布日期:2012-09-12
通讯作者: 龚明昊
作者简介:*E-mail: gongmh2005@hotmail.com
基金资助:
博士后基金(2012M510568)

The quantitative assessing of trail impacts on giant panda activity based on field track points and GIS

Minghao Gong¹^,³^,^*(), Meng Hou¹, Chen Lin¹, Yanling Song², Zhiyun Ouyang³

1 Academy of Forestry Inventory and Planning, State Forestry Administration, Beijing 100714
2 Institute of Zoology, Chinese Academy of Sciences, Beijing 100101
3 Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085

Received:2011-12-15 Accepted:2012-05-14 Online:2012-07-20 Published:2012-09-12
Contact: Minghao Gong

摘要/Abstract

摘要：

道路建设不仅直接导致野生动物死亡, 还能对栖息地形成阻碍效应, 导致小种群出现或隔离, 增加物种灭绝的风险。生态学家在道路对野生动物影响研究中的一个重要进展是道路影响域(road-effect zone)的提出, 但影响域既不能反映道路影响的变化性, 也难以满足栖息地评估对数据的要求。为此, 我们以大熊猫(Ailuropoda melanoleuca)为例来探讨道路影响的定量评估方法。在佛坪和长青保护区内选择了3条步道, 获取了步道周边1,042个大熊猫的痕迹点数据, 通过GIS计算各痕迹点到步道的距离, 统计距离步道每20 m内的痕迹点数量, 以此作为其活动频率。在距步道每100 m处设置检测点, 通过非参数检验比较检测点前后活动频率分布的变化, 寻找道路对大熊猫活动影响的突变点, 确定影响变化的阈值距离和评价标准。研究发现在距离步道1,000 m内, 随距离的增加, 大熊猫活动频率逐渐增大, 大熊猫有明显的回避效应; 在距步道500 m、1,000 m处发现活动频率发生了显著变化, 为影响的阈值距离。本研究基于痕迹点和阈值距离的评估方法可以反映道路影响连续、渐变的特点, 使定量、准确评估其影响成为可能。

关键词: 评估, 步道, 大熊猫, 影响

Abstract

Trails have been shown to have impacts on wildlife, which may include injury, death, habitat hindrance, and then cause small population or population isolation and increase species extinction risk. Road effect zone was widely used to examine the wildlife responses to roads and trails, but had shortages in quantifying the changes of causative factors, and meeting the data requirements for habitat evaluation. In this research, we evaluated the impacts of trails on giant panda activity based on giant panda tracking data. The study sites were centered in Foping and Changqing natural reserves, and 1,042 giant panda tracking points were collected in association with three major trails. By aids of GIS, the distance of every track point to the trails was obtained, and then the amount and frequencies of track points every 20 m from trail were calculated. To identify the impact threshold of trails on giant panda activity, we established the testing points every 100 m from the trail for analysis of the activity frequency pattern. The results showed that within 1,000 m from the trails, the giant panda activity frequencies increased with the distance. The tracking point frequency showed significant changes at 500 meters and 1,000 meters from the trails, which represent impact threshold of trails on giant panda activity. The method based on track points and impact threshold can provide a more feasible and a quantitative evaluation for disturbances of trails and other infrastructure on wildlife activity.

Key words: assessing, trails, giant panda, impacts

龚明昊, 侯盟, 蔺琛, 宋延龄, 欧阳志云 (2012) 基于野外痕迹点和GIS技术定量评估步道对大熊猫活动的影响. 生物多样性, 20, 420-426. DOI: 10.3724/SP.J.1003.2012.07231.

Minghao Gong, Meng Hou, Chen Lin, Yanling Song, Zhiyun Ouyang (2012) The quantitative assessing of trail impacts on giant panda activity based on field track points and GIS. Biodiversity Science, 20, 420-426. DOI: 10.3724/SP.J.1003.2012.07231.

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链接本文: https://www.biodiversity-science.net/CN/10.3724/SP.J.1003.2012.07231

https://www.biodiversity-science.net/CN/Y2012/V20/I4/420

图/表 4

图1 陕西长青、佛坪自然保护区内的研究步道和调查样线

Fig. 1 Study trails and sample lines in Changqing and Foping reserves

图2 20 m单位距离下大熊猫活动频率统计与检验方法示意图

Fig. 2 The method of analysis and testing on frequencies of giant panda activity every 20 meters

表1 距离步道不同距离段内大熊猫活动频率非参数检验结果

Table 1 The result of non-parameter testing on the frequency of giant panda activity within varied distance gap to trail

检测点前后距离步道的长度段 The distance gap to trail before and after testing point (m)	TFWDG	MFWDG	Z	P
0-100; 100-200	36; 33	7.20; 6.60	-0.54	0.59
0-200; 200-400	69; 70	6.90; 7.00	-0.19	0.85
0-300; 300-600	102; 106	6.80; 7.07	-0.02	0.98
0-400; 400-800	139; 148	6.95; 7.40	-0.35	0.72
0-500; 500-1,000	158; 210	6.32; 8.40	-2.26	0.02*
500-600; 600-700	50; 42	10.00; 8.40	-0.74	0.46
500-700; 700-900	92; 76	9.20; 7.60	-1.03	0.30
500-800; 800-1,100	129; 120	8.60; 8.00	-0.42	0.68
500-900; 900-1,300	168; 143	8.40; 7.15	-1.06	0.29
500-1,000; 1,000-1,500	210; 145	8.40; 5.80	-2.86	0.004*

图3 距离步道1,500 m范围内大熊猫活动频率

Fig. 3 Frequency of giant panda activity within the 0-1,500 m distance from trail

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基于野外痕迹点和GIS技术定量评估步道对大熊猫活动的影响

The quantitative assessing of trail impacts on giant panda activity based on field track points and GIS

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