The construction of ecological civilization is related to the well-being of the people、Related to the long-term plan for the sustainable development of the Chinese nation。Facing my country’s resource consumption、Ecological degradation、The serious situation of increasing environmental pollution，Establish respect for nature、Follow nature、The concept of ecological civilization that protects nature，It is the development concept of human civilization、Major progress and new choices in roads and modes。Land resources are an important material basis for human survival and development，Land quality directly affects the living conditions and development capabilities of various life forms，Create and protect health、Clean land，Is an important guarantee for realizing sustainable human development and building ecological civilization。

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Rapid industrialization in our country、In the process of urbanization development，Not only the amount of cultivated land and high-quality grain fields continue to decrease，And unreasonable land use has resulted in fragmentation of land landscape、A series of serious ecological and environmental problems such as degradation of ecological functions and decline in biodiversity。With the massive occupation and defacement of high-quality cultivated land in our country，Implement the strictest farmland protection system，Stick to the red line of cultivated land，dafabet mobile appThe premise must be to comprehensively improve the quality of farmland。

Land engineering is the use of engineering means to solve land problems，Convert unused land into usable land or make efficient use of used land，The systematic process of actively coordinating the harmonious development of the relationship between man and earth。Using nature as humans、An important means to transform nature，In the initial stage, that is, during the thousands of years since the beginning of agricultural civilization，The main task of land transformation is to increase food production and reduce natural disasters，The Longsheng Rice Terraces built during the Yuan Dynasty is a good example。With industrialization、Acceleration of urbanization process，Unreasonable development and predatory use of land by humans，Resulting in serious land degradation and pollution，As a result, human survival and development are facing increasingly severe land desertification、Freshwater resource crisis、Toxic chemical pollution、Garbage disasters and other problems。Fundamentally solving these problems urgently requires in-depth research on land engineering、Scientific experiments and demonstration practices。

The core foundation of land engineering is the organic reconstruction of land

Many domestic scholars believe that，Land discipline is mainly an integrated discipline，It integrates water conservancy、Transportation、Architecture and other disciplines。Currently，Relevant specifications or standards for land consolidation projects also divide land projects into five major projects，Including land formation works、Water conservancy project、Traffic Road Engineering、Forestry Engineering and Distribution System Engineering。From the perspective of the division of five major projects，Only land formation engineering is closest to land engineering，Even considered to be the main body of land projects。Just imagine，Focus only on leveling the land，How to ensure that the cultivated land can grow good crops？How to ensure that the renovated construction land can better serve urban and rural development？This is the fundamental reason why the quality of current land projects is generally low。We can only find the core foundation of land engineering，Only innovating and promoting land engineering technology，Fundamentally improve the quality of land projects。

Compare other subjects，The core of traffic engineering is the infrastructure construction of roads and bridges，Imagine if traffic engineering only focused on road smoothness、Construction of roadside diversion channels、Signal design and protective forest construction，Ignored the foundation construction and bridge and culvert structure construction under the road surface，Then the road after completion、No matter how beautiful the bridge is，Potholes may appear after a short period of use、Collapse，It is even impossible to guarantee the safe driving of the vehicle。Same problem，If you only dafabet casino mobile apppay attention to the appearance of the structure and the completeness of the internal supporting facilities during the construction of the structure，ignoring the core of structural design，It will also affect the safe use of buildings，Even collapsed。For land engineering，If you only pay attention to the flatness of the field、Road、Linwang、Water and electricity supporting facilities，Ignore the basic support of soil structure，No matter how spectacular it is after it is built，There is no guarantee that the yield of agricultural land will increase，It may even lead to a decrease in production；For non-agricultural land，If the soil contains pesticide residues、Radioactive elements、Heavy metals and other pollutants，No matter how perfect the municipal facilities are，Such land will threaten the survival of living organisms and human health。Therefore，We should change the past engineering model，Transform the soil structure, a key part of the land project，Decontaminate and keep clean，Increase or decrease the elements required for life forms。Only engineering modifications to soil structures，Under the premise of consolidating the land, which carries the life foundation of all things，In order to ensure that its supporting projects continue to function。

Land engineering must follow the laws of nature

Land engineering as human use of land、An important means to protect land and resolve conflicts between people and land，Follow the laws of nature，It is necessary to find out the three-dimensional structure and components of the problematic land through basic survey，Use materials with good environmental compatibility according to local conditions，To ensure that the land transformed by the project becomes suitable agricultural land or construction land，Provide ideal space for human production and residence。

Long time，We insist on taking the construction of ecological civilization as the ultimate goal of land engineering。In the desertified Mu Us Sandy Land，We focus on the complementary characteristics of arsenic sandstone and sand that are widely distributed in the area，Make the two together into soil，Plays the role of physical sand fixation，Making the tillage layer sticky、Pink、The sand reaches the appropriate proportion。Physical reconstruction through farming layer，Improved water and fertilizer retention of the cultivated layer，Increased the productivity of newly created land，Saved water resources and improved the regional ecological environment at the same time。Zairu，Severe saline-alkali land management in Lubo Beach，We reduce the salt content of the tillage layer through the dispersion of ions。The focus is not on watering、Build roads or plant trees，But changes in the soil，While changing the chemical composition of the tillage layer through convection and dispersion，Achieved the purpose of rational allocation of water and land resources，Changed the regional microclimate，Restored the landscape of Luyang Lake where water and land coexisted in the past。

Land engineering is the dafabet mobile appfoundation for the construction of ecological civilization

Land engineering can directly provide humans with more clean land on the one hand，Promoting the construction of ecological civilization。In the abandoned mine area，By Chemistry、Biological and other measures reduce or eliminate heavy metal and other pollution in contaminated land，Improved quality of contaminated land，Restored woodland、Arable land，Built a new ecosystem，Improved the ecological environment status of the area，Reproduced the beautiful home；On the other hand，Land engineering also indirectly solves other ecological problems faced by human beings in their survival and development，Contribute to the continuous improvement of the human living environment。The haze is spreading everywhere，Public nuisance diseases caused by environmental pollution、Occupational disease incidents occur from time to time。The land has a strong adsorption effect，is an important distribution center for pollutants，Construction through land engineering，Change point-scale environmental quality first，And then improve the quality of the regional ecological environment，Consolidate the foundation for ecological civilization construction。In the long-term effect, the quality of the entire earth's ecological environment will definitely be improved，The global ecological environment facing mankind will also be comprehensively solved。

Land engineering expands living space for human civilization

The implementation of land projects can provide humans with construction land that can safely live and agricultural land that is healthy for production，Let humans live better on the earth。But this only selects land that was not suitable or could not be cultivated in the past within a limited scope of the earth for engineering treatment，Enable human beings to make fuller use of the resources on the earth。However，With the development and progress of human society，The ideal of mankind is to get out of the earth，Expand living space。In-depth research on soil reconstruction，Can lay a solid foundation for human exploration of extraterrestrial space，will also become a global cutting-edge science。

Land engineering is the foundation for providing clean land，Is the foundation of ecological civilization construction，It is also a means for human beings to expand their living space。People from all walks of life should jointly shoulder the responsibility of the times，Recognize the great significance of land engineering development，Utilizing land engineering science、Rationally utilize and protect land resources，Continuously improve land use efficiency，Realize the ultimate goal of ecological civilization and the great rejuvenation of the Chinese nation。

(The author is the general manager of Shaanxi Land Engineering Construction Group Co., Ltd.  Han Jichang ）