| Ecosystem provides human being immediate needs, with the overexploitation of natural resources, ecosystem degradation has become a globle problem not only for human being, but also for other species existence. Along the significant change of ecosystem, poverty is also a great chanllenge for modern society in recent decades. The most impoversihed people are most likely to fall into ecosystem degradation-poverty trap, in which poverty leads to ecosystem degradation and ecosystem degradation deepens poverty. Like many other species, giant panda(Ailuropoda melanoleuca) has been endangered due to habitat loss and degradation. Although a network of nature reserves aiming at protect giant panda habitat has been built, about half habitat was out of the boundary of the nature reserves. Compared with the habitat in nature reserves, giant panda habitat outside nature reserves has undergone much more intense human disturbances over the past several decades Since local residents in giant panda habitat are often the most socially marginalized minority groups in the country their most food and energy are coming from the local forest ecosystems. Thus how to get win-win solution in giant panda habitat conservation and pverty alleviation outside nature reserves is a urgent issue.With an integrated use of remote sensing, geographic information system and field investigation, this paper studied changes in vegetation and other factors on which giant panda habitat depends through the period of 1986-2009. The main results are:1) During 1986-1999, the vegetation changed from coniferous forest, mix forest and decidous forest to shrub under huaman disturbance. The giant panda haibitat suitability index (HSI) declined from 0.82 to 0.74, and the most suiTab. habitat decreased 16.66%, from 56.15% to 39.49%. The haibtat landscape diversity index increased from 1.16 to 1.29, which means a more fragmented habitat 2) During 1999-2009, along with the implementaion of the Natural Forest Protection Program (NFPP), the Grain to Grreen Program(GTGP), as well as the integrated conservation and development projects (ICDP), the disturbance to forest declined, and the vegetation succession direction is grass/crop land→shrub→decidous forest→mix forest→coniferous forest. The low quality giant panda habitat changed to high quality, the HSI increased from 0.74 to 0.80, and a lower landscape diversity index means a less fragmented habitat.3) By the use of CA-MARKOV model,the primary vegetation type would be shrub in 2009 if the trend in 1986-1999 lasts. On this base, the giant panda habitat would degrated further, the HIS would be 0.68 and the most suiTab. habitat would be only 54.51% of the real situation.4) In 1999-2009, along with the implementation of the NFPP, commercial logging in Mupi was ceased and a large part of the logging road was abandoned. The main forces that lead to the improvement of giant habitat are abandoned logging road in forest, the migration of people from high mountains to valley as well as the energy and livelihood alternatives for local people.5) The subsidy from GTGP compensatedfarmers less income from crop land, and due to the increase from off-farm and livestock raising and beekeeping, farmers income increased from 4768 Yuan in 1999 to 12521 Yuan, the average annual increase ratio is 16.26%.6) The household ecological footprint declined 40.30%, from 2.7346 hm2 to 1.6325 hm2 per capita due to the less fuelwood consumption and transition of livestock raising pattern. The project recipients'household living conditions were also greatly improved.7) Built a coupled vegetation rehabilitation and economic development model and provided policy suggestions in the low-carbon rehabilitation of the earthquake region. Such suggestions includes: promoting the use of renewable energy, develop organic agriculture and agri-forestry, etc.
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