We can trace his footprints through these special signs in the ancient walls of Pingyao, the tableau of new buildings in Guangzhou, and migrant laborers' dormitories in the Pearl River Delta, the images of two camels strolling on the wild plains he captures on his Trans-Siberian journey, of a withered tree lying low on a barren piece of land, of a tranquil anonymous lake, all conveying a sense of dusky desolation. They are no different from his trans-Balkan, around Black Sea or the Baltic shores photos. What we see is not a landscape of a particular place, but the journey that the photographer has made in his mind.

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In about a century' s time, their livelihood of swidden agriculture has been changing greatly along with the natural and social environment change. Before 1950s, as a minor group frequently move in the subtropical mountainous area characterized by scarce arable land, high forest coverage rate and sparse population, Kemu people has long been engaged in swidden agriculture which was simple, called for no sophisticated production tools and was suitable for frequent movement. At that time, they adapted to the environment change mainly by moving frequently from one place to another, and their livelihood was featured by complete dependence on environment, frequent movement and swiddening without continuous cultivation. From 1950s to early 1970s, their way of adaptation changed into migration within defined territory and shortterm fallow featured by complete dependence on environment, migration within limited area and short fallow. In early 1970s, they leaned from outside to cultivate irrigated fields and plant cash forest and their livelihood was featured by complete dependence on environment and agro-forestry.

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Using the finite element method and based on finite element simulation of profile extrusion process, the effect of local extrusion ratio, die land area and the distance between extrusion cylinder center and die opening center on mental flow velocity is studied. The deformation flow laws on profile extrusion process are obtained.

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Noting with satisfaction the convening in Madrid on 30 October 1991 of the Peace Conference on the Middle East, on the basis of Security Council resolutions 242 (1967) of 22 November 1967, 338 (1973) of 22 October 1973 and 425 (1978) of 19 March 1978 and the formula of land for peace

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Land on the Yahoo! or Microsoft squares, for instance, and for just 350 Google shares, each is yours to entrap any subsequent visitors; but find yourself on "Income Tax", and you'll drop 10 per cent of your entire fortune on government lobbyists to defend your avaricious predations.

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After this I saw four angels standing at the four corners of the earth, holding back the four winds of the earth to prevent any wind from blowing on the land or on the sea or on any tree.

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It analysedby experiments that the problem on"Ecological adaptation ofChinese White Wax Scale"existed and discussed in academiccircles for a long time,established"Hypothesis of excreting waxmechanism of Chinese White Wax Scale",explained thephenomenon of"cultivated insect on high mountains without waxproduced and produced wax on hilly land without insect cultivated",analysed reasons to cause these phenomena.

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Based on the view point of Leopold,the belief of land ethics is to change the view point of human beings. Mankinds should stop depending on themselves as conquerors or superior species on the planet. Humans should treat themselves just as a member of the community of life.

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But the most important are the issues like the weakening function on the arable land, the effect of the family planning policy, the floating of the labor force, traditional feudal concepts, as well as issues like extension of the life-span on one hand, and the incapability of self-help on the other, and the construction of Chinese legal institution.

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