马边大风顶保护区森林砍伐后大熊猫栖息地恢复过程

doi:10.11707/j.1001-7488.LYKX20230488

Abstract

Abstract:

Objective: The forest ecosystem composed of tall trees plays an irreplaceable role in Giant Panda habitat. Since 1990s, forest in Mabian Dafengding Nature Reserve suffered from deforestation by forest industry enterprises, causing serious impacts on the habitat of Giant Pandas. With the implementation of forest conservation projects such as the Natural Forest Protection Project, the forest vegetation has gradually recovered. Understanding the process of forest recovery after logging provides a fundamental basis for formulating restoration measures for the Giant Panda habitat. Method: Based on Landsat satellite data, this study conducted an analysis using the Support Vector Machine (SVM) classification method and the moving window approach to examine changes in forest cover over a 40-year period before and after forest logging in the Mabian Dafengding Nature Reserve. Field surveys were also conducted to assess habitat fragmentation and connectivity. Result: The research findings indicate that the forest within the reserve experienced heavily logging, the forest area decreasing from 295km² to 230 km², followed by a gradual recovering to 274km² and reaching 277km² in recent year. With the forest area gradually approaching the pre-logging level, the recovery rate decreasing as well, moreover, small-scale illegal logging is still damaging forest restoration. The heavily logged areas are concentrated mainly along the Sichanglada-Jueluohuo fire prevention road and in the southwestern region of the Yonghong conservation zone and the northern area of the Mani conservation point, resulting in the highly connected forestland in the reserve being blocked and divided into three zones. Among these, the Sichanglada-Jueluohuo fire prevention road area is the most severely affected and representative. Early-stage restoration efforts in this area did not reach the requirements for suitable habitat for Giant Pandas, improvement is in need, area is suitable for experimenting with forest recovery and protection measures. Conclusion: Forest fragmentation is pronounced within the reserve, with distinct separations between different blocks. It is necessary and urgent to carry out habitat restoration which aim at Giant Pandas` original habitat, establish Giant Pandas` habitat corridor, and strengthen control measures.

Key words: deforestation, forest restoration, moving window method, habitat of giant panda(Ailuropoda melanoleuca), Mabian Dafengding Nature Reserve

CLC Number:

S718.5

Hui Li,Qunyan Zhang,Guanhua Pu,Huakang Yin,Liqiang Fu,Zeen Mao,Jindong Zhang. Recovery Process of Giant Panda Habitat After Deforestation in the Mabian Dafengding Nature Reserve[J]. Scientia Silvae Sinicae, 2024, 60(12): 191-200.

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受验类型 Type of inspection	验证点总数 Total number of verification points	分类正确点数 Correct classification points	分类错误点数 Error classification points	分类精度 Classification accuracy	总精度 Total accuracy	Kappa系数 Kappa index
林地 Forestland	946	931	15	98.41%	96.95%	0.86
非林地 Non-forestland	137	119	18	86.86%	96.95%	0.86

项目Item		永红管护区 Yonghong conservation zone	沙腔管护区 Shaqiang conservation zone	高卓营管护区 Gaozhuoying conservation zone	白家湾管护区 Baijiawan conservation zone
各管护区总面积 Total area of each conservation zone/km²		221.0	55.7	24.9	63.9
大规模砍伐期 Massive deforest stage（1988—1999）	林地受损面积 Forest damaged area/km²	52.7	7.3	5.2	12.9
大规模砍伐期 Massive deforest stage（1988—1999）	林地受损比率 Forest damaged ratio（%）	23.8	13.1	20.8	20.2
恢复前期 Early recover stage （1999—2009）	林地受损面积 Forest damaged area/km²	7.9	2.8	1.4	6.5
	林地受损比率 Forest damaged ratio（%）	3.6	5.1	5.8	10.1
	林地恢复面积 Forest recovered area/km²	47.9	5.4	3.4	8.2
	林地恢复比率 Forest recovered ratio（%）	21.7	9.6	13.7	12.8
恢复后期（2009—2019） Later recover stage	林地受损面积 Forest damaged area/km²	14.9	2.9	3.3	3.2
	林地受损比率 Forest damaged ratio（%）	6.7	5.2	13.4	5.0
	林地恢复面积 Forest recovered area/km²	14.2	2.4	1.0	7.9
	林地恢复比率 Forest recovered ratio（%）	6.4	4.3	3.9	12.3

微生境信息种类 Types of microhabitat information	原始林 Primary forest	次生林 Secondary forest	人工林 Planted forest	F	P
竹种 Bamboo species	大叶筇竹 Chimonobambusa macrophylla	大叶筇竹 Chimonobambusa macrophylla	大叶筇竹 Chimonobambusa macrophylla
乔木郁闭度 Canopy density	0.354±0.162	0.030±0.094	0.528±0.205	74.864	<0.001
乔木胸径 Diameter at breast height of tree /cm	43.7±21.3	4.9±10.6	8.8±3.7	70.769	<0.001
乔木高度 Tree height /m	13.14±5.83	2.50±6.09	4.91±1.63	38.004	<0.001
竹子盖度 Bamboo coverage（%）	74.0±13.0	92.7±8.9	50.4±15.2	84.389	<0.001
竹子密度 Bamboo density /（plant·m^–2）	24.5±6.9	27.2±8.0	13.5±3.6	37.833	<0.001
竹子高度 Bamboo height /cm	282.3±63.1	357.9±54.3	204.8±37.7	63.150	<0.001
竹子基径 Bamboo base diameter /mm	13.06±2.40	16.42±2.17	13.98±1.47	21.638	<0.001

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Recovery Process of Giant Panda Habitat After Deforestation in the Mabian Dafengding Nature Reserve

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